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Exhaust Manifold to Head Bolt Torque?

Posted: Wed Nov 12, 2008 8:46 pm
by Buffman
What's the Torque Specification for the exhaust manifold bolts (to head)? I didn't see it listed in the haynes manual unless it was named something goofy. Or is Good"N"Tight enough? I don't think I'll have to worry about the replacement gaskets compressing much, but if there's a torque specification (especially for aluminum) I like to keep to it.

Someone who replaced the gaskets long before me cross threaded the rear driver's bolt. No Tap on hand to fix it. I hate lazy mechanics.

Matt

Posted: Fri Nov 14, 2008 8:36 am
by kleinkid
In my Haynes manual page 4-1
Exhaust pipe-to-exhaust manifold bolts--15-20 ft. lbs.

Subaru service manual section 2-9 page 3
Non TURBO model-- 19-26 ft. lbs.
TURBO model--25-33 ft. lbs.

Posted: Fri Nov 14, 2008 3:13 pm
by Buffman
ahhh gotcha. Not sure how I missed that. Thanks :)

Posted: Fri Nov 14, 2008 3:38 pm
by kimokalihi
So how does haynes or chilton come up with their torque numbers if they're not right?

Posted: Fri Nov 14, 2008 4:21 pm
by n2x4
kimokalihi wrote:So how does haynes or chilton come up with their torque numbers if they're not right?
I think the same way they come up with everything else in their books.. direct from the @$$ to the paper. I take everything they publish with a grain of salt.

Posted: Fri Nov 14, 2008 5:50 pm
by Buffman
well even the FSM can be wrong. My Roadmaster FSM calls for 114 ftlbs on the timing cover bolts. LOL Some people have blindly followed that, and you'll see a thread pop up "BROKE Timing Cover Bolts"

Matt