crank bolt right or left hand thread?
 

Just bought a used zHonda and am installing timing belt
righ or left hand thread?


Thanks


SW

Re: crank bolt right or left hand thread?
 

Right hand thread.

The crankshaft pulley bolt is typically extremely tight.

See discussion at
http://home.earthlink.net/~honda.lioness/id6.html
and
http://www.tegger.com/hondafaq/cranktool/index.html


"swhaley" <swhaley@xxxnc.rr.com> wrote
> Just bought a used zHonda and am installing timing belt
> righ or left hand thread?

Re: crank bolt right or left hand thread?
 

Right hand thread.

The crankshaft pulley bolt is typically extremely tight.

See discussion at
http://home.earthlink.net/~honda.lioness/id6.html
and
http://www.tegger.com/hondafaq/cranktool/index.html


"swhaley" <swhaley@xxxnc.rr.com> wrote
> Just bought a used zHonda and am installing timing belt
> righ or left hand thread?

Re: crank bolt right or left hand thread?
 

Right hand thread.

The crankshaft pulley bolt is typically extremely tight.

See discussion at
http://home.earthlink.net/~honda.lioness/id6.html
and
http://www.tegger.com/hondafaq/cranktool/index.html


"swhaley" <swhaley@xxxnc.rr.com> wrote
> Just bought a used zHonda and am installing timing belt
> righ or left hand thread?

Re: crank bolt right or left hand thread?
 

Right hand thread.

The crankshaft pulley bolt is typically extremely tight.

See discussion at
http://home.earthlink.net/~honda.lioness/id6.html
and
http://www.tegger.com/hondafaq/cranktool/index.html


"swhaley" <swhaley@xxxnc.rr.com> wrote
> Just bought a used zHonda and am installing timing belt
> righ or left hand thread?

Re: crank bolt right or left hand thread?
 

"Elle" <honda.lioness@nospam.earthlink.net> wrote in message
news:iLXrg.4938$PE1.4853@newsread2.news.pas.earthl ink.net...
> Right hand thread.
>
> The crankshaft pulley bolt is typically extremely tight.
>
We never did do a test to determine whether the bolt is actually tightening
over time or whether the bond is just strengthening, did we? All everybody
agrees on is that it is a devil to get loose, at least for the first timing
belt change.

Mike

Re: crank bolt right or left hand thread?
 

"Elle" <honda.lioness@nospam.earthlink.net> wrote in message
news:iLXrg.4938$PE1.4853@newsread2.news.pas.earthl ink.net...
> Right hand thread.
>
> The crankshaft pulley bolt is typically extremely tight.
>
We never did do a test to determine whether the bolt is actually tightening
over time or whether the bond is just strengthening, did we? All everybody
agrees on is that it is a devil to get loose, at least for the first timing
belt change.

Mike

Re: crank bolt right or left hand thread?
 

"Elle" <honda.lioness@nospam.earthlink.net> wrote in message
news:iLXrg.4938$PE1.4853@newsread2.news.pas.earthl ink.net...
> Right hand thread.
>
> The crankshaft pulley bolt is typically extremely tight.
>
We never did do a test to determine whether the bolt is actually tightening
over time or whether the bond is just strengthening, did we? All everybody
agrees on is that it is a devil to get loose, at least for the first timing
belt change.

Mike

Re: crank bolt right or left hand thread?
 

"Elle" <honda.lioness@nospam.earthlink.net> wrote in message
news:iLXrg.4938$PE1.4853@newsread2.news.pas.earthl ink.net...
> Right hand thread.
>
> The crankshaft pulley bolt is typically extremely tight.
>
We never did do a test to determine whether the bolt is actually tightening
over time or whether the bond is just strengthening, did we? All everybody
agrees on is that it is a devil to get loose, at least for the first timing
belt change.

Mike

Re: crank bolt right or left hand thread?
 

"Michael Pardee" <michaeltnull@cybertrails.com> wrote
> "Elle" <honda.lioness@nospam.earthlink.net> wrote
>> Right hand thread.
>>
>> The crankshaft pulley bolt is typically extremely tight.
>>
> We never did do a test to determine whether the bolt is
> actually tightening over time or whether the bond is just
> strengthening, did we?

You wouldn't want this group to be boring, would you? ;-)

I am not sure a test exists that would persuade everyone or
persuade effectively.

I wasn't willing to perform tests on my 91 Civic's.

I am convinced that the fact that it's not merely a fine
thread but a super fine thread means the bond becomes
stronger over time, especially when subject to heat cycling.
Bolt metal melds into the metal of the crankshaft. I
certainly think it's possible that this is all that's
causing it to become so difficult to break loose. I won't
hold my breath, but we might all agree on this point.

Having conquered (well, with a lot of group support) eight
frozen, fine thread, suspension bolts, and noticing that at
least one appeared to be welded to the inner sleeve (and had
to be completely cut out with an air die grinder), I can
believe that the pulley bolt sees similar forces and so
similarly becomes "more tightly bonded" as time goes on.

The contravening evidence is J. Beam's claim that the pulley
bolt becomes extremely tight again after just a very short
time driving (like less than a day, IIRC).

>All everybody agrees on is that it is a devil to get loose,
>at least for the first timing belt change.

After two timing belt changes, mine still required over
about 300 ft-lbs, by my calculations.

Re: crank bolt right or left hand thread?
 

"Michael Pardee" <michaeltnull@cybertrails.com> wrote
> "Elle" <honda.lioness@nospam.earthlink.net> wrote
>> Right hand thread.
>>
>> The crankshaft pulley bolt is typically extremely tight.
>>
> We never did do a test to determine whether the bolt is
> actually tightening over time or whether the bond is just
> strengthening, did we?

You wouldn't want this group to be boring, would you? ;-)

I am not sure a test exists that would persuade everyone or
persuade effectively.

I wasn't willing to perform tests on my 91 Civic's.

I am convinced that the fact that it's not merely a fine
thread but a super fine thread means the bond becomes
stronger over time, especially when subject to heat cycling.
Bolt metal melds into the metal of the crankshaft. I
certainly think it's possible that this is all that's
causing it to become so difficult to break loose. I won't
hold my breath, but we might all agree on this point.

Having conquered (well, with a lot of group support) eight
frozen, fine thread, suspension bolts, and noticing that at
least one appeared to be welded to the inner sleeve (and had
to be completely cut out with an air die grinder), I can
believe that the pulley bolt sees similar forces and so
similarly becomes "more tightly bonded" as time goes on.

The contravening evidence is J. Beam's claim that the pulley
bolt becomes extremely tight again after just a very short
time driving (like less than a day, IIRC).

>All everybody agrees on is that it is a devil to get loose,
>at least for the first timing belt change.

After two timing belt changes, mine still required over
about 300 ft-lbs, by my calculations.

Re: crank bolt right or left hand thread?
 

"Michael Pardee" <michaeltnull@cybertrails.com> wrote
> "Elle" <honda.lioness@nospam.earthlink.net> wrote
>> Right hand thread.
>>
>> The crankshaft pulley bolt is typically extremely tight.
>>
> We never did do a test to determine whether the bolt is
> actually tightening over time or whether the bond is just
> strengthening, did we?

You wouldn't want this group to be boring, would you? ;-)

I am not sure a test exists that would persuade everyone or
persuade effectively.

I wasn't willing to perform tests on my 91 Civic's.

I am convinced that the fact that it's not merely a fine
thread but a super fine thread means the bond becomes
stronger over time, especially when subject to heat cycling.
Bolt metal melds into the metal of the crankshaft. I
certainly think it's possible that this is all that's
causing it to become so difficult to break loose. I won't
hold my breath, but we might all agree on this point.

Having conquered (well, with a lot of group support) eight
frozen, fine thread, suspension bolts, and noticing that at
least one appeared to be welded to the inner sleeve (and had
to be completely cut out with an air die grinder), I can
believe that the pulley bolt sees similar forces and so
similarly becomes "more tightly bonded" as time goes on.

The contravening evidence is J. Beam's claim that the pulley
bolt becomes extremely tight again after just a very short
time driving (like less than a day, IIRC).

>All everybody agrees on is that it is a devil to get loose,
>at least for the first timing belt change.

After two timing belt changes, mine still required over
about 300 ft-lbs, by my calculations.

Re: crank bolt right or left hand thread?
 

"Michael Pardee" <michaeltnull@cybertrails.com> wrote
> "Elle" <honda.lioness@nospam.earthlink.net> wrote
>> Right hand thread.
>>
>> The crankshaft pulley bolt is typically extremely tight.
>>
> We never did do a test to determine whether the bolt is
> actually tightening over time or whether the bond is just
> strengthening, did we?

You wouldn't want this group to be boring, would you? ;-)

I am not sure a test exists that would persuade everyone or
persuade effectively.

I wasn't willing to perform tests on my 91 Civic's.

I am convinced that the fact that it's not merely a fine
thread but a super fine thread means the bond becomes
stronger over time, especially when subject to heat cycling.
Bolt metal melds into the metal of the crankshaft. I
certainly think it's possible that this is all that's
causing it to become so difficult to break loose. I won't
hold my breath, but we might all agree on this point.

Having conquered (well, with a lot of group support) eight
frozen, fine thread, suspension bolts, and noticing that at
least one appeared to be welded to the inner sleeve (and had
to be completely cut out with an air die grinder), I can
believe that the pulley bolt sees similar forces and so
similarly becomes "more tightly bonded" as time goes on.

The contravening evidence is J. Beam's claim that the pulley
bolt becomes extremely tight again after just a very short
time driving (like less than a day, IIRC).

>All everybody agrees on is that it is a devil to get loose,
>at least for the first timing belt change.

After two timing belt changes, mine still required over
about 300 ft-lbs, by my calculations.

Re: crank bolt right or left hand thread?
 

"Elle" <honda.lioness@nospam.earthlink.net> wrote in message
news:3dYrg.2021$vO.1051@newsread4.news.pas.earthli nk.net...
> "Michael Pardee" <michaeltnull@cybertrails.com> wrote
>> "Elle" <honda.lioness@nospam.earthlink.net> wrote
>>> Right hand thread.
>>>
>>> The crankshaft pulley bolt is typically extremely tight.
>>>
>> We never did do a test to determine whether the bolt is actually
>> tightening over time or whether the bond is just strengthening, did we?
>
> You wouldn't want this group to be boring, would you? ;-)
>
> I am not sure a test exists that would persuade everyone or persuade
> effectively.
>
> I wasn't willing to perform tests on my 91 Civic's.
>
> I am convinced that the fact that it's not merely a fine thread but a
> super fine thread means the bond becomes stronger over time, especially
> when subject to heat cycling. Bolt metal melds into the metal of the
> crankshaft. I certainly think it's possible that this is all that's
> causing it to become so difficult to break loose. I won't hold my breath,
> but we might all agree on this point.
>
> Having conquered (well, with a lot of group support) eight frozen, fine
> thread, suspension bolts, and noticing that at least one appeared to be
> welded to the inner sleeve (and had to be completely cut out with an air
> die grinder), I can believe that the pulley bolt sees similar forces and
> so similarly becomes "more tightly bonded" as time goes on.
>
> The contravening evidence is J. Beam's claim that the pulley bolt becomes
> extremely tight again after just a very short time driving (like less than
> a day, IIRC).
>
>>All everybody agrees on is that it is a devil to get loose, at least for
>>the first timing belt change.
>
> After two timing belt changes, mine still required over about 300 ft-lbs,
> by my calculations.
>
I absolve you of the burden ;-)

I just recalled that you suggested a spot of nail polish to match-mark the
bolt head and pulley, and I'm fresh out of nail polish.

All that aside, I agree that it is probably a cold-weld process that makes
the break-away torque so high. People have also reported that working both
in the loosen and tighten directions with an impact gun helps, which
supports that theory.

Mike

Re: crank bolt right or left hand thread?
 

"Elle" <honda.lioness@nospam.earthlink.net> wrote in message
news:3dYrg.2021$vO.1051@newsread4.news.pas.earthli nk.net...
> "Michael Pardee" <michaeltnull@cybertrails.com> wrote
>> "Elle" <honda.lioness@nospam.earthlink.net> wrote
>>> Right hand thread.
>>>
>>> The crankshaft pulley bolt is typically extremely tight.
>>>
>> We never did do a test to determine whether the bolt is actually
>> tightening over time or whether the bond is just strengthening, did we?
>
> You wouldn't want this group to be boring, would you? ;-)
>
> I am not sure a test exists that would persuade everyone or persuade
> effectively.
>
> I wasn't willing to perform tests on my 91 Civic's.
>
> I am convinced that the fact that it's not merely a fine thread but a
> super fine thread means the bond becomes stronger over time, especially
> when subject to heat cycling. Bolt metal melds into the metal of the
> crankshaft. I certainly think it's possible that this is all that's
> causing it to become so difficult to break loose. I won't hold my breath,
> but we might all agree on this point.
>
> Having conquered (well, with a lot of group support) eight frozen, fine
> thread, suspension bolts, and noticing that at least one appeared to be
> welded to the inner sleeve (and had to be completely cut out with an air
> die grinder), I can believe that the pulley bolt sees similar forces and
> so similarly becomes "more tightly bonded" as time goes on.
>
> The contravening evidence is J. Beam's claim that the pulley bolt becomes
> extremely tight again after just a very short time driving (like less than
> a day, IIRC).
>
>>All everybody agrees on is that it is a devil to get loose, at least for
>>the first timing belt change.
>
> After two timing belt changes, mine still required over about 300 ft-lbs,
> by my calculations.
>
I absolve you of the burden ;-)

I just recalled that you suggested a spot of nail polish to match-mark the
bolt head and pulley, and I'm fresh out of nail polish.

All that aside, I agree that it is probably a cold-weld process that makes
the break-away torque so high. People have also reported that working both
in the loosen and tighten directions with an impact gun helps, which
supports that theory.

Mike