Reinstalling intake manifold

That is what I'd worry about. I think it is more of a problem with exhaust manifolds, but the difference in expansion between the aluminum head and iron manifold has caused a lot of broken manifold studs. I don't know the torque for the B230F, but the Haynes manual says 7-11 ft-lbs for the B28 V6 engine. That is a very low torque.

Mike

You need to get a torque wrench to make certain you have the head tightened correctly. To get the specs, you need a manual. You should be able to get both at a chain auto parts store for under $25 total. Have someone drive you to one.

Incidentally, some heads have a specific sequence that the bolts must be tightened in. You should loosen all the bolts until there's no tension on them, then tighten to the specified torque in the specified order (if there is one).

Gary

I think the general sequence for tightening bolts is to tighten the center two bolts opposite each other and then go outward, top and bottom. Do not put the final torque on the bolts until they are all snugged in first.

snipped-for-privacy@hotmail.com wrote:

IIRC the 8 valve specs 15 lb-ft torque on the intake bolts. Some of them are tricky to get a torque wrench on though so I just use a standard wrench and estimate, snug but not so tight as to strip out the soft aluminum.