[s-cars] clutch replacement

[Dave Kase]

You just answered your own question...

Kase


Jerry Scott wrote:
> 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
>>>>         
>> _______________________________________________
>> S-CAR-List mailing list
>> S-CAR-List at audifans.com
>> http://www.audifans.com/mailman/listinfo/s-car-list
>>
>>     
>
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list
>   

-- 
David Kase
VP of Engineering & Operations
PDQ Industries
717-656-4281
717-656-8749 (f)
www.pdqlocks.com