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10-09-2015
3.8 engine. not the supercharged.
I'm going to tear into this project tomorrow.
I don't have any torque wrenches so ill need to buy some. Will I need 2 torque wrenches? one for ft pounds and one for inch pounds? I'm thinking i can get them at harbor freight.
Will I need to use loctite on the bolts?
10-09-2015
you can get by with just making them good em tight. the lim is 12 fp not sure what the upper intake is on a n/a engine.
all that info is all over this site already. theres got to be 3 lim threads from the last 2 weeks.
you need thread sealant on the lim bolts too, not loctite.
10-09-2015
No spec needed, just really snug is good enough.
You could snap a bolt even at the stock tq spec because technically they are TTY bolts I think.
10-09-2015
TTY bolts suck
Originally Posted by Bio248
Originally Posted by Kilroy
10-10-2015
The head bolts are tty.
LIM = 11 LB FT.
UIM, Valve Cover, Throttle Body = 89 IN LBS.
10-11-2015
I snugged the bolts tight on the LI.
good enough?
10-11-2015
Works for me.
10-11-2015
If only we had a sticky with the bolt sizes and torque specs http://www.grandprixforums.net/threa...ue-spec-thread
Originally Posted by The Sunfire Guy
10-12-2015
LIM specs have been revised over the years as the gaskets have changed.
Plastic gasket w/o metal sleeves was 11 ft lbs
Plastic gasket with metal sleeves was 13 ft lbs
Metal gasket, I have used 15 ft lbs about 100 times successfully
UIM is 89 in lbs which.. being 12 inches in a foot.. you could do the math down to 7.4ft lbs.
10-17-2015
I had to set my inch lb wrench to 132. I do not snug major gaskets like head and intake manifold gaskets because it isn't worth risking. Thread locker when applicable and torque sequence/specs are a mandatory thing to me.
10-17-2015
Heads bolts are different, those are something you want to care about.
Everything else doesnt matter on a 3800, snug em down and go. The specs are so low anyway, why waste my time breaking out the torque wrench when my electric impact does the job in 1/4th the time. Same with any LS motor, TQ the head bolts, slap the rest together without a care. Time is money.
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