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-   -   Valve clearance question (https://www.gtcarz.com/honda-mailing-list-327/valve-clearance-question-294895/)

ExtremeValue 11-01-2006 11:03 PM

Re: Valve clearance question
 


On Nov 1, 8:29 pm, "TeGGeR®" <teg...@tegger.c0m> wrote:
> "ExtremeValue" <rah...@gmail.com> wrote innews:1162428558.352463.4010@m7g2000cwm.googlegro ups.com:
>
>
>
> > Can somebody please give me a some hint as to why valve adjustment is
> > necessary. Thanks a lot. My 1996 civic seems alright at this moment.
> > But as the winter sets in, I only notice "tick tick" sound in the
> > morning for 1 or 1/2 minutes when the engine is cold. I was wondering
> > if this is something to do with valve adjustment. It's got 220K km and
> > I don't know its service history. Its been with me for 1 year, from
> > 210Kkm. Its runs good, idles good and no unwanted sound coming from
> > the engine either.Valve *adjustment* is not necessarily necessary (sorry). CHECKING *IS*

> necessary, as I say in my previous message.
>
> The reason checking is necessary is because it is possible for the
> clearances to close up over time.
>
> Should your valve clearances close up, the valves will be pressed
> against their seats for a shorter length of time, and will thus suffer
> inadequate cooling time. This means an increased probability of
> suffering a burned valve, which will leak and cause compression,
> emissions and power problems. Burned valves cost mucho dinero, hombre.
>
> The only way to make sure your valves have adequate cooling time is to
> check the clearances at regular intervals. The factory specifies 30K
> miles. I do it more often than that, just 'cause I like to. YMMV, as the
> acronym goes...
>
> *Loose* clearances are not a real problem. A loose valve is a happy
> valve. It has lots of time to give up lots of heat. A loose valve is
> also a noisy valve though, but that's the driver's problem. The solution
> is to turn up the radio.
> If it's REALLY noisy, like making a loud clacking noise at all times,
> then somebody's made a mistake and needs to go back in and fix it.
>
> As far as your "ticking" sound, it's more likely piston slap or the
> power steering pump, not the valves. Valve noise is there all the time,
> not just when cold.
>


TeGGeR®

Hello Boss
I guess what I was trying to ask is that whether I need to check the
valve clearance and I got the answer from your post. I am only 1-year
experienced with my honda.



> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQwww.tegger.com/hondafaq/



ExtremeValue 11-01-2006 11:03 PM

Re: Valve clearance question
 


On Nov 1, 8:29 pm, "TeGGeR®" <teg...@tegger.c0m> wrote:
> "ExtremeValue" <rah...@gmail.com> wrote innews:1162428558.352463.4010@m7g2000cwm.googlegro ups.com:
>
>
>
> > Can somebody please give me a some hint as to why valve adjustment is
> > necessary. Thanks a lot. My 1996 civic seems alright at this moment.
> > But as the winter sets in, I only notice "tick tick" sound in the
> > morning for 1 or 1/2 minutes when the engine is cold. I was wondering
> > if this is something to do with valve adjustment. It's got 220K km and
> > I don't know its service history. Its been with me for 1 year, from
> > 210Kkm. Its runs good, idles good and no unwanted sound coming from
> > the engine either.Valve *adjustment* is not necessarily necessary (sorry). CHECKING *IS*

> necessary, as I say in my previous message.
>
> The reason checking is necessary is because it is possible for the
> clearances to close up over time.
>
> Should your valve clearances close up, the valves will be pressed
> against their seats for a shorter length of time, and will thus suffer
> inadequate cooling time. This means an increased probability of
> suffering a burned valve, which will leak and cause compression,
> emissions and power problems. Burned valves cost mucho dinero, hombre.
>
> The only way to make sure your valves have adequate cooling time is to
> check the clearances at regular intervals. The factory specifies 30K
> miles. I do it more often than that, just 'cause I like to. YMMV, as the
> acronym goes...
>
> *Loose* clearances are not a real problem. A loose valve is a happy
> valve. It has lots of time to give up lots of heat. A loose valve is
> also a noisy valve though, but that's the driver's problem. The solution
> is to turn up the radio.
> If it's REALLY noisy, like making a loud clacking noise at all times,
> then somebody's made a mistake and needs to go back in and fix it.
>
> As far as your "ticking" sound, it's more likely piston slap or the
> power steering pump, not the valves. Valve noise is there all the time,
> not just when cold.
>


TeGGeR®

Hello Boss
I guess what I was trying to ask is that whether I need to check the
valve clearance and I got the answer from your post. I am only 1-year
experienced with my honda.



> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQwww.tegger.com/hondafaq/



ExtremeValue 11-01-2006 11:03 PM

Re: Valve clearance question
 


On Nov 1, 8:29 pm, "TeGGeR®" <teg...@tegger.c0m> wrote:
> "ExtremeValue" <rah...@gmail.com> wrote innews:1162428558.352463.4010@m7g2000cwm.googlegro ups.com:
>
>
>
> > Can somebody please give me a some hint as to why valve adjustment is
> > necessary. Thanks a lot. My 1996 civic seems alright at this moment.
> > But as the winter sets in, I only notice "tick tick" sound in the
> > morning for 1 or 1/2 minutes when the engine is cold. I was wondering
> > if this is something to do with valve adjustment. It's got 220K km and
> > I don't know its service history. Its been with me for 1 year, from
> > 210Kkm. Its runs good, idles good and no unwanted sound coming from
> > the engine either.Valve *adjustment* is not necessarily necessary (sorry). CHECKING *IS*

> necessary, as I say in my previous message.
>
> The reason checking is necessary is because it is possible for the
> clearances to close up over time.
>
> Should your valve clearances close up, the valves will be pressed
> against their seats for a shorter length of time, and will thus suffer
> inadequate cooling time. This means an increased probability of
> suffering a burned valve, which will leak and cause compression,
> emissions and power problems. Burned valves cost mucho dinero, hombre.
>
> The only way to make sure your valves have adequate cooling time is to
> check the clearances at regular intervals. The factory specifies 30K
> miles. I do it more often than that, just 'cause I like to. YMMV, as the
> acronym goes...
>
> *Loose* clearances are not a real problem. A loose valve is a happy
> valve. It has lots of time to give up lots of heat. A loose valve is
> also a noisy valve though, but that's the driver's problem. The solution
> is to turn up the radio.
> If it's REALLY noisy, like making a loud clacking noise at all times,
> then somebody's made a mistake and needs to go back in and fix it.
>
> As far as your "ticking" sound, it's more likely piston slap or the
> power steering pump, not the valves. Valve noise is there all the time,
> not just when cold.
>


TeGGeR®

Hello Boss
I guess what I was trying to ask is that whether I need to check the
valve clearance and I got the answer from your post. I am only 1-year
experienced with my honda.



> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQwww.tegger.com/hondafaq/



ExtremeValue 11-01-2006 11:09 PM

Re: Valve clearance question
 


On Nov 1, 10:36 pm, jim beam <spamvor...@bad.example.net> wrote:
> ExtremeValue wrote:
> > Can somebody please give me a some hint as to why valve adjustment is
> > necessary.they need clearance to prevent valve burn. when running at max temp,

> the valve stem lengthens and closes up the gap a little. if the gap is
> insufficient, the valve never closes properly, hot gas leaks under it
> and hot spots develop. these then start to burn causing greater
> leakage, which makes the hot spots hotter, etc. remedy requires valve
> replacement, or worse, valve seat replacement. either way, it's a huge
> pita. avoid the discomfort by checking the valve lash every 30k and
> investing $5 in a new rocker cover gasket each time you do it.
>
> > Thanks a lot. My 1996 civic seems alright at this moment.
> > But as the winter sets in, I only notice "tick tick" sound in the
> > morning for 1 or 1/2 minutes when the engine is cold. I was wondering
> > if this is something to do with valve adjustment.no, it's piston slap. make sure you use a quality branded oil and

> change at the specified intervals and it'll not get any worse. hint:
> "quality branded" does NOT include motorcraft.


Hi

You are probably correct as the sound comes from the engine only in the
morning (very cold here at Waterloo, ON). I change oil at regular
interval from Honda only. Thanks.



>
> > It's got 220K km and
> > I don't know its service history. Its been with me for 1 year, from
> > 210Kkm. Its runs good, idles good and no unwanted sound coming from the
> > engine either.you'll get double that mileage if you look after it.

>

That is very good to know.Yes, I've been taking good care of it:)


>
>
> > On Nov 1, 7:22 pm, "TeGGeR?" <teg...@tegger.c0m> wrote:
> >> bug6...@gmail.com wrote in news:1162406136.858171.23130
> >> @m7g2000cwm.googlegroups.com:

>
> >>> I adjusted the valve clearances on a '95 Civic, 1.6L DOHC non-vtec,
> >>> yesterday, with good results. However I read on an older thread that,
> >>> while measuring the gap, you should push down on the other end of the
> >>> rocker arm to eliminate slack.WRONG! Just position the cam lobes properly (critical!) then slide the
> >> gauge in place. The fit should be just snug enough that you can feel a
> >> touch of drag when you slide it between the cam lobe and follower.

>
> >> Warning: Some of the valves are placed such that it's VERY easy to mis-
> >> position the feeler and think the clearance is too tight. Give each one
> >> a good hard shove (short of bending the feeler) to make certain it
> >> actually won't go and isn't just twisted.

>
> >> I like to use two gauges, a "go" and a "no go". Say tolerances are
> >> .006" to .008". I'd use a .006" as a "go" and a .008" as a "no go". This
> >> means my final tolerances are necessarily between .006 and .008, and
> >> thus correct.

>
> >> BTW, some feeler gauge sets are cheaply made and have a burr around the
> >> edges. You can feel this burr with your fingernail. If such exists on
> >> your set, gently file or sand it off.

>
> >>> Should I have done this?
> >>> Any other things to adjust to reduce engine clatter?Does this "clatter" happen all the time, or only for the first few
> >> seconds on startup?

>
> >> --
> >> TeGGeR?

>
> >> The Unofficial Honda/Acura FAQwww.tegger.com/hondafaq/



ExtremeValue 11-01-2006 11:09 PM

Re: Valve clearance question
 


On Nov 1, 10:36 pm, jim beam <spamvor...@bad.example.net> wrote:
> ExtremeValue wrote:
> > Can somebody please give me a some hint as to why valve adjustment is
> > necessary.they need clearance to prevent valve burn. when running at max temp,

> the valve stem lengthens and closes up the gap a little. if the gap is
> insufficient, the valve never closes properly, hot gas leaks under it
> and hot spots develop. these then start to burn causing greater
> leakage, which makes the hot spots hotter, etc. remedy requires valve
> replacement, or worse, valve seat replacement. either way, it's a huge
> pita. avoid the discomfort by checking the valve lash every 30k and
> investing $5 in a new rocker cover gasket each time you do it.
>
> > Thanks a lot. My 1996 civic seems alright at this moment.
> > But as the winter sets in, I only notice "tick tick" sound in the
> > morning for 1 or 1/2 minutes when the engine is cold. I was wondering
> > if this is something to do with valve adjustment.no, it's piston slap. make sure you use a quality branded oil and

> change at the specified intervals and it'll not get any worse. hint:
> "quality branded" does NOT include motorcraft.


Hi

You are probably correct as the sound comes from the engine only in the
morning (very cold here at Waterloo, ON). I change oil at regular
interval from Honda only. Thanks.



>
> > It's got 220K km and
> > I don't know its service history. Its been with me for 1 year, from
> > 210Kkm. Its runs good, idles good and no unwanted sound coming from the
> > engine either.you'll get double that mileage if you look after it.

>

That is very good to know.Yes, I've been taking good care of it:)


>
>
> > On Nov 1, 7:22 pm, "TeGGeR?" <teg...@tegger.c0m> wrote:
> >> bug6...@gmail.com wrote in news:1162406136.858171.23130
> >> @m7g2000cwm.googlegroups.com:

>
> >>> I adjusted the valve clearances on a '95 Civic, 1.6L DOHC non-vtec,
> >>> yesterday, with good results. However I read on an older thread that,
> >>> while measuring the gap, you should push down on the other end of the
> >>> rocker arm to eliminate slack.WRONG! Just position the cam lobes properly (critical!) then slide the
> >> gauge in place. The fit should be just snug enough that you can feel a
> >> touch of drag when you slide it between the cam lobe and follower.

>
> >> Warning: Some of the valves are placed such that it's VERY easy to mis-
> >> position the feeler and think the clearance is too tight. Give each one
> >> a good hard shove (short of bending the feeler) to make certain it
> >> actually won't go and isn't just twisted.

>
> >> I like to use two gauges, a "go" and a "no go". Say tolerances are
> >> .006" to .008". I'd use a .006" as a "go" and a .008" as a "no go". This
> >> means my final tolerances are necessarily between .006 and .008, and
> >> thus correct.

>
> >> BTW, some feeler gauge sets are cheaply made and have a burr around the
> >> edges. You can feel this burr with your fingernail. If such exists on
> >> your set, gently file or sand it off.

>
> >>> Should I have done this?
> >>> Any other things to adjust to reduce engine clatter?Does this "clatter" happen all the time, or only for the first few
> >> seconds on startup?

>
> >> --
> >> TeGGeR?

>
> >> The Unofficial Honda/Acura FAQwww.tegger.com/hondafaq/



ExtremeValue 11-01-2006 11:09 PM

Re: Valve clearance question
 


On Nov 1, 10:36 pm, jim beam <spamvor...@bad.example.net> wrote:
> ExtremeValue wrote:
> > Can somebody please give me a some hint as to why valve adjustment is
> > necessary.they need clearance to prevent valve burn. when running at max temp,

> the valve stem lengthens and closes up the gap a little. if the gap is
> insufficient, the valve never closes properly, hot gas leaks under it
> and hot spots develop. these then start to burn causing greater
> leakage, which makes the hot spots hotter, etc. remedy requires valve
> replacement, or worse, valve seat replacement. either way, it's a huge
> pita. avoid the discomfort by checking the valve lash every 30k and
> investing $5 in a new rocker cover gasket each time you do it.
>
> > Thanks a lot. My 1996 civic seems alright at this moment.
> > But as the winter sets in, I only notice "tick tick" sound in the
> > morning for 1 or 1/2 minutes when the engine is cold. I was wondering
> > if this is something to do with valve adjustment.no, it's piston slap. make sure you use a quality branded oil and

> change at the specified intervals and it'll not get any worse. hint:
> "quality branded" does NOT include motorcraft.


Hi

You are probably correct as the sound comes from the engine only in the
morning (very cold here at Waterloo, ON). I change oil at regular
interval from Honda only. Thanks.



>
> > It's got 220K km and
> > I don't know its service history. Its been with me for 1 year, from
> > 210Kkm. Its runs good, idles good and no unwanted sound coming from the
> > engine either.you'll get double that mileage if you look after it.

>

That is very good to know.Yes, I've been taking good care of it:)


>
>
> > On Nov 1, 7:22 pm, "TeGGeR?" <teg...@tegger.c0m> wrote:
> >> bug6...@gmail.com wrote in news:1162406136.858171.23130
> >> @m7g2000cwm.googlegroups.com:

>
> >>> I adjusted the valve clearances on a '95 Civic, 1.6L DOHC non-vtec,
> >>> yesterday, with good results. However I read on an older thread that,
> >>> while measuring the gap, you should push down on the other end of the
> >>> rocker arm to eliminate slack.WRONG! Just position the cam lobes properly (critical!) then slide the
> >> gauge in place. The fit should be just snug enough that you can feel a
> >> touch of drag when you slide it between the cam lobe and follower.

>
> >> Warning: Some of the valves are placed such that it's VERY easy to mis-
> >> position the feeler and think the clearance is too tight. Give each one
> >> a good hard shove (short of bending the feeler) to make certain it
> >> actually won't go and isn't just twisted.

>
> >> I like to use two gauges, a "go" and a "no go". Say tolerances are
> >> .006" to .008". I'd use a .006" as a "go" and a .008" as a "no go". This
> >> means my final tolerances are necessarily between .006 and .008, and
> >> thus correct.

>
> >> BTW, some feeler gauge sets are cheaply made and have a burr around the
> >> edges. You can feel this burr with your fingernail. If such exists on
> >> your set, gently file or sand it off.

>
> >>> Should I have done this?
> >>> Any other things to adjust to reduce engine clatter?Does this "clatter" happen all the time, or only for the first few
> >> seconds on startup?

>
> >> --
> >> TeGGeR?

>
> >> The Unofficial Honda/Acura FAQwww.tegger.com/hondafaq/



ExtremeValue 11-01-2006 11:09 PM

Re: Valve clearance question
 


On Nov 1, 10:36 pm, jim beam <spamvor...@bad.example.net> wrote:
> ExtremeValue wrote:
> > Can somebody please give me a some hint as to why valve adjustment is
> > necessary.they need clearance to prevent valve burn. when running at max temp,

> the valve stem lengthens and closes up the gap a little. if the gap is
> insufficient, the valve never closes properly, hot gas leaks under it
> and hot spots develop. these then start to burn causing greater
> leakage, which makes the hot spots hotter, etc. remedy requires valve
> replacement, or worse, valve seat replacement. either way, it's a huge
> pita. avoid the discomfort by checking the valve lash every 30k and
> investing $5 in a new rocker cover gasket each time you do it.
>
> > Thanks a lot. My 1996 civic seems alright at this moment.
> > But as the winter sets in, I only notice "tick tick" sound in the
> > morning for 1 or 1/2 minutes when the engine is cold. I was wondering
> > if this is something to do with valve adjustment.no, it's piston slap. make sure you use a quality branded oil and

> change at the specified intervals and it'll not get any worse. hint:
> "quality branded" does NOT include motorcraft.


Hi

You are probably correct as the sound comes from the engine only in the
morning (very cold here at Waterloo, ON). I change oil at regular
interval from Honda only. Thanks.



>
> > It's got 220K km and
> > I don't know its service history. Its been with me for 1 year, from
> > 210Kkm. Its runs good, idles good and no unwanted sound coming from the
> > engine either.you'll get double that mileage if you look after it.

>

That is very good to know.Yes, I've been taking good care of it:)


>
>
> > On Nov 1, 7:22 pm, "TeGGeR?" <teg...@tegger.c0m> wrote:
> >> bug6...@gmail.com wrote in news:1162406136.858171.23130
> >> @m7g2000cwm.googlegroups.com:

>
> >>> I adjusted the valve clearances on a '95 Civic, 1.6L DOHC non-vtec,
> >>> yesterday, with good results. However I read on an older thread that,
> >>> while measuring the gap, you should push down on the other end of the
> >>> rocker arm to eliminate slack.WRONG! Just position the cam lobes properly (critical!) then slide the
> >> gauge in place. The fit should be just snug enough that you can feel a
> >> touch of drag when you slide it between the cam lobe and follower.

>
> >> Warning: Some of the valves are placed such that it's VERY easy to mis-
> >> position the feeler and think the clearance is too tight. Give each one
> >> a good hard shove (short of bending the feeler) to make certain it
> >> actually won't go and isn't just twisted.

>
> >> I like to use two gauges, a "go" and a "no go". Say tolerances are
> >> .006" to .008". I'd use a .006" as a "go" and a .008" as a "no go". This
> >> means my final tolerances are necessarily between .006 and .008, and
> >> thus correct.

>
> >> BTW, some feeler gauge sets are cheaply made and have a burr around the
> >> edges. You can feel this burr with your fingernail. If such exists on
> >> your set, gently file or sand it off.

>
> >>> Should I have done this?
> >>> Any other things to adjust to reduce engine clatter?Does this "clatter" happen all the time, or only for the first few
> >> seconds on startup?

>
> >> --
> >> TeGGeR?

>
> >> The Unofficial Honda/Acura FAQwww.tegger.com/hondafaq/



bug67ph@gmail.com 11-02-2006 12:12 AM

Re: Valve clearance question
 
TeGGeR® wrote:

> Does this "clatter" happen all the time, or only for the first few
> seconds on startup?


Well, the engine used to be "clattery" at any temp (more when cold),
but after replacing the PCV, cleaning the TB, replacing idle screw
gasket, plugging vacuum leaks and adjusting the valve clearances, it's
a lot quieter now (idle RPM is now within spec). But I was wondering if
there was anything else I could have missed.

What makes some engines more quiet than others (given roughly the same
specs)?


bug67ph@gmail.com 11-02-2006 12:12 AM

Re: Valve clearance question
 
TeGGeR® wrote:

> Does this "clatter" happen all the time, or only for the first few
> seconds on startup?


Well, the engine used to be "clattery" at any temp (more when cold),
but after replacing the PCV, cleaning the TB, replacing idle screw
gasket, plugging vacuum leaks and adjusting the valve clearances, it's
a lot quieter now (idle RPM is now within spec). But I was wondering if
there was anything else I could have missed.

What makes some engines more quiet than others (given roughly the same
specs)?


bug67ph@gmail.com 11-02-2006 12:12 AM

Re: Valve clearance question
 
TeGGeR® wrote:

> Does this "clatter" happen all the time, or only for the first few
> seconds on startup?


Well, the engine used to be "clattery" at any temp (more when cold),
but after replacing the PCV, cleaning the TB, replacing idle screw
gasket, plugging vacuum leaks and adjusting the valve clearances, it's
a lot quieter now (idle RPM is now within spec). But I was wondering if
there was anything else I could have missed.

What makes some engines more quiet than others (given roughly the same
specs)?


bug67ph@gmail.com 11-02-2006 12:12 AM

Re: Valve clearance question
 
TeGGeR® wrote:

> Does this "clatter" happen all the time, or only for the first few
> seconds on startup?


Well, the engine used to be "clattery" at any temp (more when cold),
but after replacing the PCV, cleaning the TB, replacing idle screw
gasket, plugging vacuum leaks and adjusting the valve clearances, it's
a lot quieter now (idle RPM is now within spec). But I was wondering if
there was anything else I could have missed.

What makes some engines more quiet than others (given roughly the same
specs)?


jim beam 11-02-2006 12:23 AM

Re: Valve clearance question
 
bug67ph@gmail.com wrote:
<snip>
>
> What makes some engines more quiet than others (given roughly the same
> specs)?
>

wear. oil quality.

jim beam 11-02-2006 12:23 AM

Re: Valve clearance question
 
bug67ph@gmail.com wrote:
<snip>
>
> What makes some engines more quiet than others (given roughly the same
> specs)?
>

wear. oil quality.

jim beam 11-02-2006 12:23 AM

Re: Valve clearance question
 
bug67ph@gmail.com wrote:
<snip>
>
> What makes some engines more quiet than others (given roughly the same
> specs)?
>

wear. oil quality.

jim beam 11-02-2006 12:23 AM

Re: Valve clearance question
 
bug67ph@gmail.com wrote:
<snip>
>
> What makes some engines more quiet than others (given roughly the same
> specs)?
>

wear. oil quality.


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