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Posted by: brant Sep 10 2004, 03:24 PM

He everyone...

I lost my conversion table.
my spec. book indicates 15 mkp torque on the 6cylinder flywheel bolts.

what is mkp.. or more importantly, how many foot lbs is that?

thanks
brant

Posted by: Root_Werks Sep 10 2004, 03:34 PM

Make sure you are using brand new flywheel bolts. DON'T re-use the old ones.

The pelican site was 150nm which is 111lbs. I thought it was more like 65lbs? I don't have my book handy.

Posted by: Cloudbuster Sep 10 2004, 03:35 PM

Uh, off the top of my head, I recall my 914/901 flywheel bolts being up around around 85 ft/lbs

Posted by: brant Sep 10 2004, 03:36 PM

yep.. bought brand new ones...

hmm....

should I go 65 or 111... hmmm...

I've got a spec book but don't know what 15mkp is?

help

brant

Posted by: brant Sep 10 2004, 03:38 PM

Cloudbuster,

for a -4 or a -6...

haynes shows 80lbs for a 4, but is it the same for a -6?

brant

Posted by: J P Stein Sep 10 2004, 03:40 PM

110 ft/lbs for the 6 bolt flywheel......65 ft/lbs for the 9 bolt..

Posted by: brant Sep 10 2004, 03:43 PM

thanks everyone...
thanks JP and cloudbuster and rootworks...

well back to the garage I guess....
this place is amazing...
brant

Posted by: Cloudbuster Sep 10 2004, 03:45 PM

My numbers were for a -4, sorry.

I did find this handy converter on the Web though...

http://mdmetric.com/tech/tech4/torqcalc3.htm

Posted by: Sammy Sep 10 2004, 03:49 PM

JP nailed it. The 6 bolts pattern gets the stretch to 90% yield, hence the replace every time thing.

In 1978 porsche put out a service bulletin that said you don't have to replace the bolts anymore, i guess that means that iffn you have a 3.0 or later you can re-use them, 2.7 you replace em every time.

Posted by: J P Stein Sep 10 2004, 03:56 PM

@ 13 bucks a piece.....AUUGGH....not to mention the "special tool". Such is the price of greatness

Posted by: Cap'n Krusty Sep 10 2004, 06:06 PM

15 MKP is 108.51 ft/lbs. I replace EVERY flywheel bolt EVERY time. 13 or whatever dollar bolts are zip compared to the labor and parts to replace a crankshaft or even the money to replace a flywheel (or a tranny!). Ya pays yer money, ya takes yer choice ............ The Cap'n

Posted by: J P Stein Sep 10 2004, 08:09 PM

Hay Cap'n, I got some slightly used ones (only torqued once) I'll sell ya for half price.