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PostPosted: Sat Jul 23, 2011 8:42 am 
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2 BBL ''SuperSix''

Joined: Tue Apr 26, 2011 10:55 am
Posts: 24
Location: mikkeli, south-savo, finland
Car Model:
hi :D

ive got a strange question for you lot!
now, I know that the correct torque for the main bearing cap / crankshaft bearing cap bolts is 85ftlb (?) but any idea what the minimum and maximum torques would be?
like if for any random reason I couldnt reach 85 or could turn it even tighter.

please, just fulfill my curiosity :lol:


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PostPosted: Sat Jul 23, 2011 9:45 am 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3830
Location: Indianapolis
Car Model:
+/- 5% is is typical manufacturing torque tolerance applied to critical fasteners. Other fasteners are typically +/- 10%

the precision and accuracy of the torque wrench is of some importance with the criticals,,,
the criticals are:main-rod-head-flywheel bolts


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PostPosted: Sat Jul 23, 2011 10:33 am 
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Turbo EFI

Joined: Sat Feb 20, 2010 10:23 am
Posts: 1341
Location: N. Ga.
Car Model: 64 Valiant
Bolt torque is also determined by grade of material, length and thread size.

_________________
There's no such thing as too much cam....only not enough engine!
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PostPosted: Sat Jul 23, 2011 1:08 pm 
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2 BBL ''SuperSix''

Joined: Tue Apr 26, 2011 10:55 am
Posts: 24
Location: mikkeli, south-savo, finland
Car Model:
Quote:
Bolt torque is also determined by grade of material, length and thread size.
yeah uh I probably should find out what those are :D
i am such a darn retard... the bolt is grade 8 though.

and why am I asking, really?
I had a bit of an accident with them bearing caps, or rather one of the saddles.

http://www.stupidfusion.com/kuvia/?dir=sl6

heres the photos of what was done to the block to get around the problem...
it actually doesnt look quite as bad as the pictures would make it appear, im somewhat carefully optimistic of this fix working. the guy who did the job says that i should be able to tighten the new bolt down to 90 ftlb (120nm) but no more than that.
nevertheless im somewhat doubtful as the new hole is only as half as deep as the original...


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PostPosted: Sat Jul 23, 2011 3:30 pm 
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Turbo EFI

Joined: Tue May 17, 2005 4:26 pm
Posts: 1237
Location: CBS Newfoundland Canada
Car Model:
have you consider a stud and nut on that cap?


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