[s-cars] clutch replacement

[Jerry Scott]

As an engineer we learned in school that steel will stretch and return to 
its original length without damage unless you hit the yield point of the 
curve.  So, why can't they be reused as long as they are kept in the Hook's 
law range of the yield?  I don't intend to reuse them, but don't see why 
not.
----- Original Message ----- 
From: "Peter Golledge" <petergolledge at gmail.com>
To: "'Jerry Scott'" <jerryscott at wispertel.net>; "'Tom Green'" 
<trgreen at comcast.net>
Cc: "'s-car list'" <s-car-list at audifans.com>
Sent: Tuesday, August 05, 2008 9:45 AM
Subject: RE: [s-cars] clutch replacement


> Jerry,
>
> Bolts with a Torque Spec + Turn are meant to stretch with the additional
> turn.  Many head bolts have the same setup.  Don't reuse these as they 
> only
> stretch once. :-)
>
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Jerry Scott
> Sent: Tuesday, August 05, 2008 8:16 AM
> To: Tom Green
> Cc: s-car list
> Subject: Re: [s-cars] clutch replacement
>
> Tom
> I'm picking up the clutch today here in Denver and will start assembling
> today.  I will go with the stock LUK and stock flywheel.  The problem with
> the clutch was oil leakage from the trany onto the disc.  The car has 91K
> and the clutch looked like it was less than 1/2 gone.  I heard others say
> that the trany seal caused the slippage.
>
> Thanks for the torque specs - that will be very helpful.  The bolts for 
> the
> flywheel required a 6 point socket and big breaker bar to get it loose.  I
> can't imagine why they just don't give a final torque number instead of 
> the
> 1/2 turn after a torque number.  Yes I noticed the offset of bolt holes, 
> so
> looks like the dual mass flywheel is tuned to a specific crank angle.
>
> I'll have some pictures when done and will add them to the write-up by 
> Chad
> Tobin.
>
> The trany seal was a little difficult to remove.  The engine seal was
> easier, but had to drive a pry bar into it.
>
> I'll let you know when it's done.
> Jerry
> ----- Original Message ----- 
> From: "Tom Green" <trgreen at comcast.net>
> To: "s-car-list" <s-car-list at audifans.com>; "Jerry Scott"
> <jerryscott at wispertel.net>
> Sent: Monday, August 04, 2008 3:21 PM
> Subject: Re:[s-cars] clutch replacement
>
>
>> So, are you putting things back together already, Jerry?  What clutch 
>> and
>
>> flywheel did you decide on?
>>
>> Bentley knows the specs.  :-)   Generally, he says M6= 7 ft lb. M8 =  15
>> ft lb.  M10 = 33 ft lb. and M12 = 44 ft lb.
>>
>> The M8 clutch bolts call for 18 ft lb. after pressure plate is on
>> locating pins and firmly seated.  That's about
>> all you can do with an allen wrench anyway.
>>
>> The M10 flywheel bolts call for 33 ft lb. + 1/2 turn.  I believe the
>> stretch is allowed in increments if you can't
>> make the 1/2 turn all at once.  You noticed the bolt holes are offset  so
>> the flywheel only matches up in one
>> position?  The OEM bolts are triple-square with a shallow hex head.   You
>> need to get the tool fully inserted
>> and square on those to stretch it.  Maybe you want a spare even at  that
>> price?
>>
>> The engine assembly/disassembly pages C13-21/22 show 22 ft lb. and  1/4
>> turn, but I am certain this is an
>> error, since the V6 engine calls for 33 ft lb + 1/2 turn also, and  the 
>> 22
>
>> ft lb. isn't enough to ensure any bolt
>> stretch in 1/4 turn.  I just mention this so you will be aware of it  in
>> case someone saw those numbers and
>> gave them to you without realizing they conflict with all other parts  of
>> the manual.
>>
>> I hope this is helpful and not just confusing.
>>
>> Tom
>>
>> On Aug 3, 2008, at 5:55 PM, Jerry Scott wrote:
>>
>>> Does anyone know the torque spec. for the flywheel bolts and the  clutch
>>> bolts?
>>> Jerry
>>
>
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