Need some DIY input to replace a headgasket on my 93' Civic DX
 

Recently I have had an issue with my 93' Civic all stock, (227,000
miles, still runs good, but I know it's a ton of miles). White smoke
from my tail pipe, coolant in my exhaust can be smelled, with the car
lurching/stuttering in idle. Driving, my temp meter shot up to high, I
turned on the heater to get it down, which helped but it would still
rise and fall like a roller coaster. It happened yesterday, got it home

and I haven't driven it since, I do not want to warp or damage the
engine...

Through some online research and input from dad, I discovered that I
either have a blown head gasket or a cracked head. I know that I need
to replace a head Gasket, but I'm not sure where to start? (e.g
compression test, watching radiator or bubbles)
It seems like it's not going to JUST be the Gasket either that needs
replacing, reading various blogs it sounds like there's a bit more
involved in the process (People have been posting about torque and
flexible header bolts, losing me in this jargon). I don't know too much

about cars, it's a learning experience for me. Pops knows a bit, but
some DIY input would be great.

What I do know is that as a full time college student, I don't have the

12- 1400 Grand to pay a shop to do it. I just had Midas replace my
master Cylinder (no pressure, pedal to the floor) and do all my brakes
2 weeks ago, a $400 job my parents helped me cover. So I am not willing

to just give up on this car after putting that kind of money into it.
Please, I'd appreciate it if responses like, "If you don't know what
you're doing forget it", they are annoying and quite unhelpful. This is

why I am posting for some input. We (pops and I) are doing it at home,
and I simply want maybe a walkthrough, or some things to look out for,
strategies to avoid problems, etc. Thanks in advance for stopping to
read my blog...

Also, Car is in good condition. I had it fully serviced last month, all

fluids checked, Filters replaced, etc. 2 months ago had to replace the
radiator with a new one (Texas summer! 0_o). In other words, I have not

had any issues with this vehicle...

- Chris H.

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"Hendersauce" <shinigami_chris@juno.com> wrote in message
news:1158864715.260325.211420@b28g2000cwb.googlegr oups.com...
> Recently I have had an issue with my 93' Civic all stock, (227,000
> miles, still runs good, but I know it's a ton of miles). White smoke
> from my tail pipe, coolant in my exhaust can be smelled, with the car
> lurching/stuttering in idle. Driving, my temp meter shot up to high, I
> turned on the heater to get it down, which helped but it would still
> rise and fall like a roller coaster. It happened yesterday, got it home
>
> and I haven't driven it since, I do not want to warp or damage the
> engine...
>
> Through some online research and input from dad, I discovered that I
> either have a blown head gasket or a cracked head. I know that I need
> to replace a head Gasket, but I'm not sure where to start? (e.g
> compression test, watching radiator or bubbles)
> It seems like it's not going to JUST be the Gasket either that needs
> replacing, reading various blogs it sounds like there's a bit more
> involved in the process (People have been posting about torque and
> flexible header bolts, losing me in this jargon). I don't know too much
>
> about cars, it's a learning experience for me. Pops knows a bit, but
> some DIY input would be great.
>
> What I do know is that as a full time college student, I don't have the
>
> 12- 1400 Grand to pay a shop to do it. I just had Midas replace my
> master Cylinder (no pressure, pedal to the floor) and do all my brakes
> 2 weeks ago, a $400 job my parents helped me cover. So I am not willing
>
> to just give up on this car after putting that kind of money into it.
> Please, I'd appreciate it if responses like, "If you don't know what
> you're doing forget it", they are annoying and quite unhelpful. This is
>
> why I am posting for some input. We (pops and I) are doing it at home,
> and I simply want maybe a walkthrough, or some things to look out for,
> strategies to avoid problems, etc. Thanks in advance for stopping to
> read my blog...
>
> Also, Car is in good condition. I had it fully serviced last month, all
>
> fluids checked, Filters replaced, etc. 2 months ago had to replace the
> radiator with a new one (Texas summer! 0_o). In other words, I have not
>
> had any issues with this vehicle...
>
> - Chris H.
>

The symptoms sure sound like a head gasket, and possibly a warped head.
Cracked heads are rarer. The shadetree test for head gasket trouble is to
remove the radiator cap (engine cold!) and start the engine. Pinch off the
hose to the reservoir and place the palm of your hand over the radiator
opening for a few seconds. If you feel steadily rising pressure or (worse)
pulsations the head needs to come off for repair.

Replacing a head gasket is a fairly advanced DIY job, but it is more work
than skill that makes it a challenge. Some important points:
*Don't rush. Expect the car to be down a week or two as you sort out snags,
in expertise or tool availability. Before the new head gasket goes on be
sure the surfaces are really ready (flat and clean). Check for guidance
frequently.
*Ask around to find a friend of a friend who has replaced a head gasket
before. Having a local source of expertise is both emotional and technical
support.
*Rent the special tools you need, which will certainly include a torque
wrench. Some parts chains offer what amounts to free rentals for up to three
days - it amounts to buying the tool and returning it for a refund, but they
expect you to do that.
*A good manual is a good friend. You can get a Haynes manual for under $20
US the last I saw, but the Helm manual at $62 (http://tinyurl.com/z7pgl)
will serve you much better. DIY repairs can make up the difference in price
very quickly.

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"Hendersauce" <shinigami_chris@juno.com> wrote in message
news:1158864715.260325.211420@b28g2000cwb.googlegr oups.com...
> Recently I have had an issue with my 93' Civic all stock, (227,000
> miles, still runs good, but I know it's a ton of miles). White smoke
> from my tail pipe, coolant in my exhaust can be smelled, with the car
> lurching/stuttering in idle. Driving, my temp meter shot up to high, I
> turned on the heater to get it down, which helped but it would still
> rise and fall like a roller coaster. It happened yesterday, got it home
>
> and I haven't driven it since, I do not want to warp or damage the
> engine...
>
> Through some online research and input from dad, I discovered that I
> either have a blown head gasket or a cracked head. I know that I need
> to replace a head Gasket, but I'm not sure where to start? (e.g
> compression test, watching radiator or bubbles)
> It seems like it's not going to JUST be the Gasket either that needs
> replacing, reading various blogs it sounds like there's a bit more
> involved in the process (People have been posting about torque and
> flexible header bolts, losing me in this jargon). I don't know too much
>
> about cars, it's a learning experience for me. Pops knows a bit, but
> some DIY input would be great.
>
> What I do know is that as a full time college student, I don't have the
>
> 12- 1400 Grand to pay a shop to do it. I just had Midas replace my
> master Cylinder (no pressure, pedal to the floor) and do all my brakes
> 2 weeks ago, a $400 job my parents helped me cover. So I am not willing
>
> to just give up on this car after putting that kind of money into it.
> Please, I'd appreciate it if responses like, "If you don't know what
> you're doing forget it", they are annoying and quite unhelpful. This is
>
> why I am posting for some input. We (pops and I) are doing it at home,
> and I simply want maybe a walkthrough, or some things to look out for,
> strategies to avoid problems, etc. Thanks in advance for stopping to
> read my blog...
>
> Also, Car is in good condition. I had it fully serviced last month, all
>
> fluids checked, Filters replaced, etc. 2 months ago had to replace the
> radiator with a new one (Texas summer! 0_o). In other words, I have not
>
> had any issues with this vehicle...
>
> - Chris H.
>

The symptoms sure sound like a head gasket, and possibly a warped head.
Cracked heads are rarer. The shadetree test for head gasket trouble is to
remove the radiator cap (engine cold!) and start the engine. Pinch off the
hose to the reservoir and place the palm of your hand over the radiator
opening for a few seconds. If you feel steadily rising pressure or (worse)
pulsations the head needs to come off for repair.

Replacing a head gasket is a fairly advanced DIY job, but it is more work
than skill that makes it a challenge. Some important points:
*Don't rush. Expect the car to be down a week or two as you sort out snags,
in expertise or tool availability. Before the new head gasket goes on be
sure the surfaces are really ready (flat and clean). Check for guidance
frequently.
*Ask around to find a friend of a friend who has replaced a head gasket
before. Having a local source of expertise is both emotional and technical
support.
*Rent the special tools you need, which will certainly include a torque
wrench. Some parts chains offer what amounts to free rentals for up to three
days - it amounts to buying the tool and returning it for a refund, but they
expect you to do that.
*A good manual is a good friend. You can get a Haynes manual for under $20
US the last I saw, but the Helm manual at $62 (http://tinyurl.com/z7pgl)
will serve you much better. DIY repairs can make up the difference in price
very quickly.

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"Hendersauce" <shinigami_chris@juno.com> wrote in message
news:1158864715.260325.211420@b28g2000cwb.googlegr oups.com...
> Recently I have had an issue with my 93' Civic all stock, (227,000
> miles, still runs good, but I know it's a ton of miles). White smoke
> from my tail pipe, coolant in my exhaust can be smelled, with the car
> lurching/stuttering in idle. Driving, my temp meter shot up to high, I
> turned on the heater to get it down, which helped but it would still
> rise and fall like a roller coaster. It happened yesterday, got it home
>
> and I haven't driven it since, I do not want to warp or damage the
> engine...
>
> Through some online research and input from dad, I discovered that I
> either have a blown head gasket or a cracked head. I know that I need
> to replace a head Gasket, but I'm not sure where to start? (e.g
> compression test, watching radiator or bubbles)
> It seems like it's not going to JUST be the Gasket either that needs
> replacing, reading various blogs it sounds like there's a bit more
> involved in the process (People have been posting about torque and
> flexible header bolts, losing me in this jargon). I don't know too much
>
> about cars, it's a learning experience for me. Pops knows a bit, but
> some DIY input would be great.
>
> What I do know is that as a full time college student, I don't have the
>
> 12- 1400 Grand to pay a shop to do it. I just had Midas replace my
> master Cylinder (no pressure, pedal to the floor) and do all my brakes
> 2 weeks ago, a $400 job my parents helped me cover. So I am not willing
>
> to just give up on this car after putting that kind of money into it.
> Please, I'd appreciate it if responses like, "If you don't know what
> you're doing forget it", they are annoying and quite unhelpful. This is
>
> why I am posting for some input. We (pops and I) are doing it at home,
> and I simply want maybe a walkthrough, or some things to look out for,
> strategies to avoid problems, etc. Thanks in advance for stopping to
> read my blog...
>
> Also, Car is in good condition. I had it fully serviced last month, all
>
> fluids checked, Filters replaced, etc. 2 months ago had to replace the
> radiator with a new one (Texas summer! 0_o). In other words, I have not
>
> had any issues with this vehicle...
>
> - Chris H.
>

The symptoms sure sound like a head gasket, and possibly a warped head.
Cracked heads are rarer. The shadetree test for head gasket trouble is to
remove the radiator cap (engine cold!) and start the engine. Pinch off the
hose to the reservoir and place the palm of your hand over the radiator
opening for a few seconds. If you feel steadily rising pressure or (worse)
pulsations the head needs to come off for repair.

Replacing a head gasket is a fairly advanced DIY job, but it is more work
than skill that makes it a challenge. Some important points:
*Don't rush. Expect the car to be down a week or two as you sort out snags,
in expertise or tool availability. Before the new head gasket goes on be
sure the surfaces are really ready (flat and clean). Check for guidance
frequently.
*Ask around to find a friend of a friend who has replaced a head gasket
before. Having a local source of expertise is both emotional and technical
support.
*Rent the special tools you need, which will certainly include a torque
wrench. Some parts chains offer what amounts to free rentals for up to three
days - it amounts to buying the tool and returning it for a refund, but they
expect you to do that.
*A good manual is a good friend. You can get a Haynes manual for under $20
US the last I saw, but the Helm manual at $62 (http://tinyurl.com/z7pgl)
will serve you much better. DIY repairs can make up the difference in price
very quickly.

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

Hey Mike, Thanks for the response. Turns out pops knows a bit more
about head gaskets than I thought. He has all the tools, and we have a
mechanic who's gonna come over and remove the head, and take it to an
auto shop to get it milled. I guess from then on it's a matter of a new
gasket and putting everything back together? Should have the Haynes
manual in the house somewhere...I really think I'll be able to get
through this, but I'm keeping your response to look back on if need be.
Thanks Loads...

Sincerely
Chris

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

Hey Mike, Thanks for the response. Turns out pops knows a bit more
about head gaskets than I thought. He has all the tools, and we have a
mechanic who's gonna come over and remove the head, and take it to an
auto shop to get it milled. I guess from then on it's a matter of a new
gasket and putting everything back together? Should have the Haynes
manual in the house somewhere...I really think I'll be able to get
through this, but I'm keeping your response to look back on if need be.
Thanks Loads...

Sincerely
Chris

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

Hey Mike, Thanks for the response. Turns out pops knows a bit more
about head gaskets than I thought. He has all the tools, and we have a
mechanic who's gonna come over and remove the head, and take it to an
auto shop to get it milled. I guess from then on it's a matter of a new
gasket and putting everything back together? Should have the Haynes
manual in the house somewhere...I really think I'll be able to get
through this, but I'm keeping your response to look back on if need be.
Thanks Loads...

Sincerely
Chris

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

Hendersauce wrote:
> Hey Mike, Thanks for the response. Turns out pops knows a bit more
> about head gaskets than I thought. He has all the tools, and we have a
> mechanic who's gonna come over and remove the head, and take it to an
> auto shop to get it milled.

do NOT get the head milled unless it is warped. i've seen many an alloy
head screwed up this way. and they get slapped back on the block
regardless so the owner has to go back again in 6 months and gets soaked
for a new motor.

1. remove head.
2. do a rough check for flatness.
3. if ok, clean it up /carefully/.
4. check for flatness again.
5. finish cleaning.
6. re-use.

google this group for recent talk-through of this procedure on an accord.

oh, and the reason milling is such a gamble is because if the cutting
piece picks up a piece of crud, it drags it all the way across the head
gouging a deeper and deeper furrow in the surface as it goes. in old
cast iron heads, this doesn't happen, so in the old days, it was ok to
do this as a routine service procedure. old habits die hard, and in
this case, can be very destructive. the head needs to be finished to
near mirror finish to give a long term seal. if you really /must/ skim
the head, make sure you inspect the work of the shop on other heads
before you let them touch yours. if they produce near mirror, go ahead
and use them. if they produce stuff with milling marks and ridges on
it, move right along. and don't believe any story about the head
needing milling marks to "grip" the gasket - that's bunk.

> I guess from then on it's a matter of a new
> gasket and putting everything back together? Should have the Haynes
> manual in the house somewhere...I really think I'll be able to get
> through this, but I'm keeping your response to look back on if need be.
> Thanks Loads...
>
> Sincerely
> Chris
>

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

Hendersauce wrote:
> Hey Mike, Thanks for the response. Turns out pops knows a bit more
> about head gaskets than I thought. He has all the tools, and we have a
> mechanic who's gonna come over and remove the head, and take it to an
> auto shop to get it milled.

do NOT get the head milled unless it is warped. i've seen many an alloy
head screwed up this way. and they get slapped back on the block
regardless so the owner has to go back again in 6 months and gets soaked
for a new motor.

1. remove head.
2. do a rough check for flatness.
3. if ok, clean it up /carefully/.
4. check for flatness again.
5. finish cleaning.
6. re-use.

google this group for recent talk-through of this procedure on an accord.

oh, and the reason milling is such a gamble is because if the cutting
piece picks up a piece of crud, it drags it all the way across the head
gouging a deeper and deeper furrow in the surface as it goes. in old
cast iron heads, this doesn't happen, so in the old days, it was ok to
do this as a routine service procedure. old habits die hard, and in
this case, can be very destructive. the head needs to be finished to
near mirror finish to give a long term seal. if you really /must/ skim
the head, make sure you inspect the work of the shop on other heads
before you let them touch yours. if they produce near mirror, go ahead
and use them. if they produce stuff with milling marks and ridges on
it, move right along. and don't believe any story about the head
needing milling marks to "grip" the gasket - that's bunk.

> I guess from then on it's a matter of a new
> gasket and putting everything back together? Should have the Haynes
> manual in the house somewhere...I really think I'll be able to get
> through this, but I'm keeping your response to look back on if need be.
> Thanks Loads...
>
> Sincerely
> Chris
>

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

Hendersauce wrote:
> Hey Mike, Thanks for the response. Turns out pops knows a bit more
> about head gaskets than I thought. He has all the tools, and we have a
> mechanic who's gonna come over and remove the head, and take it to an
> auto shop to get it milled.

do NOT get the head milled unless it is warped. i've seen many an alloy
head screwed up this way. and they get slapped back on the block
regardless so the owner has to go back again in 6 months and gets soaked
for a new motor.

1. remove head.
2. do a rough check for flatness.
3. if ok, clean it up /carefully/.
4. check for flatness again.
5. finish cleaning.
6. re-use.

google this group for recent talk-through of this procedure on an accord.

oh, and the reason milling is such a gamble is because if the cutting
piece picks up a piece of crud, it drags it all the way across the head
gouging a deeper and deeper furrow in the surface as it goes. in old
cast iron heads, this doesn't happen, so in the old days, it was ok to
do this as a routine service procedure. old habits die hard, and in
this case, can be very destructive. the head needs to be finished to
near mirror finish to give a long term seal. if you really /must/ skim
the head, make sure you inspect the work of the shop on other heads
before you let them touch yours. if they produce near mirror, go ahead
and use them. if they produce stuff with milling marks and ridges on
it, move right along. and don't believe any story about the head
needing milling marks to "grip" the gasket - that's bunk.

> I guess from then on it's a matter of a new
> gasket and putting everything back together? Should have the Haynes
> manual in the house somewhere...I really think I'll be able to get
> through this, but I'm keeping your response to look back on if need be.
> Thanks Loads...
>
> Sincerely
> Chris
>

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"jim beam" <spamvortex@bad.example.net> wrote in message
news:Z4mdnYYlAsIxAYnYnZ2dnUVZ_oKdnZ2d@speakeasy.ne t...
> The head needs to be finished to near mirror finish to give a long term
> seal. if you really /must/ skim the head, make sure you inspect the work
> of the shop on other heads before you let them touch yours. if they
> produce near mirror, go ahead and use them. if they produce stuff with
> milling marks and ridges on it, move right along. and don't believe any
> story about the head needing milling marks to "grip" the gasket - that's
> bunk.
>
Some shop that fouled up a milling must have come up with that and described
it as a "feature."

Yeah, feature, that's the ticket... it needs those scratches. Hate to have
the head slip plumb off the gasket because it's so smooth, right?

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"jim beam" <spamvortex@bad.example.net> wrote in message
news:Z4mdnYYlAsIxAYnYnZ2dnUVZ_oKdnZ2d@speakeasy.ne t...
> The head needs to be finished to near mirror finish to give a long term
> seal. if you really /must/ skim the head, make sure you inspect the work
> of the shop on other heads before you let them touch yours. if they
> produce near mirror, go ahead and use them. if they produce stuff with
> milling marks and ridges on it, move right along. and don't believe any
> story about the head needing milling marks to "grip" the gasket - that's
> bunk.
>
Some shop that fouled up a milling must have come up with that and described
it as a "feature."

Yeah, feature, that's the ticket... it needs those scratches. Hate to have
the head slip plumb off the gasket because it's so smooth, right?

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"jim beam" <spamvortex@bad.example.net> wrote in message
news:Z4mdnYYlAsIxAYnYnZ2dnUVZ_oKdnZ2d@speakeasy.ne t...
> The head needs to be finished to near mirror finish to give a long term
> seal. if you really /must/ skim the head, make sure you inspect the work
> of the shop on other heads before you let them touch yours. if they
> produce near mirror, go ahead and use them. if they produce stuff with
> milling marks and ridges on it, move right along. and don't believe any
> story about the head needing milling marks to "grip" the gasket - that's
> bunk.
>
Some shop that fouled up a milling must have come up with that and described
it as a "feature."

Yeah, feature, that's the ticket... it needs those scratches. Hate to have
the head slip plumb off the gasket because it's so smooth, right?

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"jim beam" <spamvortex@bad.example.net> wrote in message
news:Z4mdnYYlAsIxAYnYnZ2dnUVZ_oKdnZ2d@speakeasy.ne t...
> Hendersauce wrote:
>> Hey Mike, Thanks for the response. Turns out pops knows a bit more
>> about head gaskets than I thought. He has all the tools, and we have a
>> mechanic who's gonna come over and remove the head, and take it to an
>> auto shop to get it milled.
>
> do NOT get the head milled unless it is warped. i've seen many an alloy
> head screwed up this way. and they get slapped back on the block
> regardless so the owner has to go back again in 6 months and gets soaked
> for a new motor.
>

I defer to the group experience on this. I've had the luxury of stumbling
across a first-rate cylinder head shop (Arizona Cylinder Head for those in
the Phoenix area) and never had to worry about unnecessary work or bad work.
I agree, if a shop falls short in either of those areas it could make a
slightly bad situation much worse. A slightly gouged mating surface is the
path to perdition.

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"jim beam" <spamvortex@bad.example.net> wrote in message
news:Z4mdnYYlAsIxAYnYnZ2dnUVZ_oKdnZ2d@speakeasy.ne t...
> Hendersauce wrote:
>> Hey Mike, Thanks for the response. Turns out pops knows a bit more
>> about head gaskets than I thought. He has all the tools, and we have a
>> mechanic who's gonna come over and remove the head, and take it to an
>> auto shop to get it milled.
>
> do NOT get the head milled unless it is warped. i've seen many an alloy
> head screwed up this way. and they get slapped back on the block
> regardless so the owner has to go back again in 6 months and gets soaked
> for a new motor.
>

I defer to the group experience on this. I've had the luxury of stumbling
across a first-rate cylinder head shop (Arizona Cylinder Head for those in
the Phoenix area) and never had to worry about unnecessary work or bad work.
I agree, if a shop falls short in either of those areas it could make a
slightly bad situation much worse. A slightly gouged mating surface is the
path to perdition.

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"jim beam" <spamvortex@bad.example.net> wrote in message
news:Z4mdnYYlAsIxAYnYnZ2dnUVZ_oKdnZ2d@speakeasy.ne t...
> Hendersauce wrote:
>> Hey Mike, Thanks for the response. Turns out pops knows a bit more
>> about head gaskets than I thought. He has all the tools, and we have a
>> mechanic who's gonna come over and remove the head, and take it to an
>> auto shop to get it milled.
>
> do NOT get the head milled unless it is warped. i've seen many an alloy
> head screwed up this way. and they get slapped back on the block
> regardless so the owner has to go back again in 6 months and gets soaked
> for a new motor.
>

I defer to the group experience on this. I've had the luxury of stumbling
across a first-rate cylinder head shop (Arizona Cylinder Head for those in
the Phoenix area) and never had to worry about unnecessary work or bad work.
I agree, if a shop falls short in either of those areas it could make a
slightly bad situation much worse. A slightly gouged mating surface is the
path to perdition.

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"jim beam" <spamvortex@bad.example.net> wrote in message news:Z4mdnYYlAsIxAYnYnZ2dnUVZ_oKdnZ2d@speakeasy.ne t...

> do NOT get the head milled unless it is warped. i've seen many an alloy
> head screwed up this way. and they get slapped back on the block
> regardless so the owner has to go back again in 6 months and gets soaked
> for a new motor.
>
> 1. remove head.
> 2. do a rough check for flatness.
> 3. if ok, clean it up /carefully/.
> 4. check for flatness again.
> 5. finish cleaning.
> 6. re-use.
>
> google this group for recent talk-through of this procedure on an accord.
> oh, and the reason milling is such a gamble is because if the cutting
> piece picks up a piece of crud, it drags it all the way across the head
> gouging a deeper and deeper furrow in the surface as it goes.

People have been resurfacing head or aluminum alloys for years
and only the inexperience would drag the crud all the way across the head.

> in old cast iron heads, this doesn't happen, so in the old days, it was ok to
> do this as a routine service procedure. old habits die hard, and in
> this case, can be very destructive. the head needs to be finished to
> near mirror finish to give a long term seal. if you really /must/ skim
> the head, make sure you inspect the work of the shop on other heads
> before you let them touch yours. if they produce near mirror, go ahead
> and use them. if they produce stuff with milling marks and ridges on
> it, move right along. and don't believe any story about the head
> needing milling marks to "grip" the gasket - that's bunk.

A near mirror finishes are too expensive for the average car owner
could afford. Unless the car manufacturer requires a near mirror
finish, don't bother with it.

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"jim beam" <spamvortex@bad.example.net> wrote in message news:Z4mdnYYlAsIxAYnYnZ2dnUVZ_oKdnZ2d@speakeasy.ne t...

> do NOT get the head milled unless it is warped. i've seen many an alloy
> head screwed up this way. and they get slapped back on the block
> regardless so the owner has to go back again in 6 months and gets soaked
> for a new motor.
>
> 1. remove head.
> 2. do a rough check for flatness.
> 3. if ok, clean it up /carefully/.
> 4. check for flatness again.
> 5. finish cleaning.
> 6. re-use.
>
> google this group for recent talk-through of this procedure on an accord.
> oh, and the reason milling is such a gamble is because if the cutting
> piece picks up a piece of crud, it drags it all the way across the head
> gouging a deeper and deeper furrow in the surface as it goes.

People have been resurfacing head or aluminum alloys for years
and only the inexperience would drag the crud all the way across the head.

> in old cast iron heads, this doesn't happen, so in the old days, it was ok to
> do this as a routine service procedure. old habits die hard, and in
> this case, can be very destructive. the head needs to be finished to
> near mirror finish to give a long term seal. if you really /must/ skim
> the head, make sure you inspect the work of the shop on other heads
> before you let them touch yours. if they produce near mirror, go ahead
> and use them. if they produce stuff with milling marks and ridges on
> it, move right along. and don't believe any story about the head
> needing milling marks to "grip" the gasket - that's bunk.

A near mirror finishes are too expensive for the average car owner
could afford. Unless the car manufacturer requires a near mirror
finish, don't bother with it.

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"jim beam" <spamvortex@bad.example.net> wrote in message news:Z4mdnYYlAsIxAYnYnZ2dnUVZ_oKdnZ2d@speakeasy.ne t...

> do NOT get the head milled unless it is warped. i've seen many an alloy
> head screwed up this way. and they get slapped back on the block
> regardless so the owner has to go back again in 6 months and gets soaked
> for a new motor.
>
> 1. remove head.
> 2. do a rough check for flatness.
> 3. if ok, clean it up /carefully/.
> 4. check for flatness again.
> 5. finish cleaning.
> 6. re-use.
>
> google this group for recent talk-through of this procedure on an accord.
> oh, and the reason milling is such a gamble is because if the cutting
> piece picks up a piece of crud, it drags it all the way across the head
> gouging a deeper and deeper furrow in the surface as it goes.

People have been resurfacing head or aluminum alloys for years
and only the inexperience would drag the crud all the way across the head.

> in old cast iron heads, this doesn't happen, so in the old days, it was ok to
> do this as a routine service procedure. old habits die hard, and in
> this case, can be very destructive. the head needs to be finished to
> near mirror finish to give a long term seal. if you really /must/ skim
> the head, make sure you inspect the work of the shop on other heads
> before you let them touch yours. if they produce near mirror, go ahead
> and use them. if they produce stuff with milling marks and ridges on
> it, move right along. and don't believe any story about the head
> needing milling marks to "grip" the gasket - that's bunk.

A near mirror finishes are too expensive for the average car owner
could afford. Unless the car manufacturer requires a near mirror
finish, don't bother with it.

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"Ricky Wang" <RickyWang@has.none> wrote in message
news:jJqSg.5123$TV3.3285@newssvr21.news.prodigy.co m...
>
> A near mirror finishes are too expensive for the average car owner
> could afford. Unless the car manufacturer requires a near mirror
> finish, don't bother with it.
>
My retired ex-partner has done some milling for me in his garage, and the
output of the milling machine can be described as "near mirror finish." If a
milling machine isn't producing that sort of output, it's because the head
hasn't been dressed lately. That's the sort of neglect that can weaken the
head gasket seal as combustion gasses insinuate their way through the gaps.

Actually, I don't think debris produces the milling marks. The cutter head
is an abrasive disk spun at high speed that is scanned across the surface in
the plane of the disk The edge of the disk cuts a flat groove at a preset
thickness, then is moved laterally to cut an identical groove beside that,
and so on. Milling marks appear if the wheel edge is not true.

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"Ricky Wang" <RickyWang@has.none> wrote in message
news:jJqSg.5123$TV3.3285@newssvr21.news.prodigy.co m...
>
> A near mirror finishes are too expensive for the average car owner
> could afford. Unless the car manufacturer requires a near mirror
> finish, don't bother with it.
>
My retired ex-partner has done some milling for me in his garage, and the
output of the milling machine can be described as "near mirror finish." If a
milling machine isn't producing that sort of output, it's because the head
hasn't been dressed lately. That's the sort of neglect that can weaken the
head gasket seal as combustion gasses insinuate their way through the gaps.

Actually, I don't think debris produces the milling marks. The cutter head
is an abrasive disk spun at high speed that is scanned across the surface in
the plane of the disk The edge of the disk cuts a flat groove at a preset
thickness, then is moved laterally to cut an identical groove beside that,
and so on. Milling marks appear if the wheel edge is not true.

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

"Ricky Wang" <RickyWang@has.none> wrote in message
news:jJqSg.5123$TV3.3285@newssvr21.news.prodigy.co m...
>
> A near mirror finishes are too expensive for the average car owner
> could afford. Unless the car manufacturer requires a near mirror
> finish, don't bother with it.
>
My retired ex-partner has done some milling for me in his garage, and the
output of the milling machine can be described as "near mirror finish." If a
milling machine isn't producing that sort of output, it's because the head
hasn't been dressed lately. That's the sort of neglect that can weaken the
head gasket seal as combustion gasses insinuate their way through the gaps.

Actually, I don't think debris produces the milling marks. The cutter head
is an abrasive disk spun at high speed that is scanned across the surface in
the plane of the disk The edge of the disk cuts a flat groove at a preset
thickness, then is moved laterally to cut an identical groove beside that,
and so on. Milling marks appear if the wheel edge is not true.

Mike

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

Michael Pardee wrote:
> "Ricky Wang" <RickyWang@has.none> wrote in message
> news:jJqSg.5123$TV3.3285@newssvr21.news.prodigy.co m...
>> A near mirror finishes are too expensive for the average car owner
>> could afford. Unless the car manufacturer requires a near mirror
>> finish, don't bother with it.
>>
> My retired ex-partner has done some milling for me in his garage, and the
> output of the milling machine can be described as "near mirror finish." If a
> milling machine isn't producing that sort of output, it's because the head
> hasn't been dressed lately. That's the sort of neglect that can weaken the
> head gasket seal as combustion gasses insinuate their way through the gaps.
>
> Actually, I don't think debris produces the milling marks. The cutter head
> is an abrasive disk spun at high speed that is scanned across the surface in
> the plane of the disk The edge of the disk cuts a flat groove at a preset
> thickness, then is moved laterally to cut an identical groove beside that,
> and so on. Milling marks appear if the wheel edge is not true.
>
> Mike
>
>
the point for both of you is that a /lot/ of head shops out there simply
use the same cutter on an alloy head that they use for cast iron. the
best case result is a grooved head that is a /long/ way from smooth.
and worst case is the gouging i'm warning you about - i've seen it many
times guys, so beware.

and the biggest point in all this is that for most repair shops that use
these kinds of milling services, they never get to see the consequences
so they never learn any different. most cars are high mileage when the
head goes the first time. if it goes a second, the car gets sold or
junked. for my personal vehicle, i want the repair to last at least as
long as the original - that's 140,141 miles. that's never going to
happen on a grooved head because gas channels along the groove base.
it's slow at first due to gasket sealant, but that sealant erodes, and
then you get leakage again.

unless you have access to a shop that can produce a bona-fide high
quality near-mirror finish, milling a head that is not warped is simply
"monkey see, monkey do".

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

Michael Pardee wrote:
> "Ricky Wang" <RickyWang@has.none> wrote in message
> news:jJqSg.5123$TV3.3285@newssvr21.news.prodigy.co m...
>> A near mirror finishes are too expensive for the average car owner
>> could afford. Unless the car manufacturer requires a near mirror
>> finish, don't bother with it.
>>
> My retired ex-partner has done some milling for me in his garage, and the
> output of the milling machine can be described as "near mirror finish." If a
> milling machine isn't producing that sort of output, it's because the head
> hasn't been dressed lately. That's the sort of neglect that can weaken the
> head gasket seal as combustion gasses insinuate their way through the gaps.
>
> Actually, I don't think debris produces the milling marks. The cutter head
> is an abrasive disk spun at high speed that is scanned across the surface in
> the plane of the disk The edge of the disk cuts a flat groove at a preset
> thickness, then is moved laterally to cut an identical groove beside that,
> and so on. Milling marks appear if the wheel edge is not true.
>
> Mike
>
>
the point for both of you is that a /lot/ of head shops out there simply
use the same cutter on an alloy head that they use for cast iron. the
best case result is a grooved head that is a /long/ way from smooth.
and worst case is the gouging i'm warning you about - i've seen it many
times guys, so beware.

and the biggest point in all this is that for most repair shops that use
these kinds of milling services, they never get to see the consequences
so they never learn any different. most cars are high mileage when the
head goes the first time. if it goes a second, the car gets sold or
junked. for my personal vehicle, i want the repair to last at least as
long as the original - that's 140,141 miles. that's never going to
happen on a grooved head because gas channels along the groove base.
it's slow at first due to gasket sealant, but that sealant erodes, and
then you get leakage again.

unless you have access to a shop that can produce a bona-fide high
quality near-mirror finish, milling a head that is not warped is simply
"monkey see, monkey do".

Re: Need some DIY input to replace a headgasket on my 93' Civic DX
 

Michael Pardee wrote:
> "Ricky Wang" <RickyWang@has.none> wrote in message
> news:jJqSg.5123$TV3.3285@newssvr21.news.prodigy.co m...
>> A near mirror finishes are too expensive for the average car owner
>> could afford. Unless the car manufacturer requires a near mirror
>> finish, don't bother with it.
>>
> My retired ex-partner has done some milling for me in his garage, and the
> output of the milling machine can be described as "near mirror finish." If a
> milling machine isn't producing that sort of output, it's because the head
> hasn't been dressed lately. That's the sort of neglect that can weaken the
> head gasket seal as combustion gasses insinuate their way through the gaps.
>
> Actually, I don't think debris produces the milling marks. The cutter head
> is an abrasive disk spun at high speed that is scanned across the surface in
> the plane of the disk The edge of the disk cuts a flat groove at a preset
> thickness, then is moved laterally to cut an identical groove beside that,
> and so on. Milling marks appear if the wheel edge is not true.
>
> Mike
>
>
the point for both of you is that a /lot/ of head shops out there simply
use the same cutter on an alloy head that they use for cast iron. the
best case result is a grooved head that is a /long/ way from smooth.
and worst case is the gouging i'm warning you about - i've seen it many
times guys, so beware.

and the biggest point in all this is that for most repair shops that use
these kinds of milling services, they never get to see the consequences
so they never learn any different. most cars are high mileage when the
head goes the first time. if it goes a second, the car gets sold or
junked. for my personal vehicle, i want the repair to last at least as
long as the original - that's 140,141 miles. that's never going to
happen on a grooved head because gas channels along the groove base.
it's slow at first due to gasket sealant, but that sealant erodes, and
then you get leakage again.

unless you have access to a shop that can produce a bona-fide high
quality near-mirror finish, milling a head that is not warped is simply
"monkey see, monkey do".