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post #1 of (permalink) Old 03-23-2001, 02:39 PM
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AMC 258 Valve Cover Bolt Torque

Can anyone tell me how much I should torque the valve cover bolts for my '84 AMC 258? And, does the torque need to be adjusted if I go with just sealant, and skip the gasket?


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post #2 of (permalink) Old 03-23-2001, 03:36 PM
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Re: AMC 258 Valve Cover Bolt Torque

If you still have the plastic vavle cover. I think it is 17IN pounds which is just about nothing. That is with a cork gasket. I dont use slicone on vavle covers only because it is a PITA to take off when it leaks the next time.

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post #3 of (permalink) Old 03-23-2001, 10:26 PM
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Re: AMC 258 Valve Cover Bolt Torque

Not sure, I cranked down till I was happy... several past post on valve cover replacements do a search for them. Helped me with mine.


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post #4 of (permalink) Old 03-25-2001, 03:38 AM
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Re: AMC 258 Valve Cover Bolt Torque

I just replaced my stock valve cover (plastic) with an aluminum cover because a bone head of a friend misread the 28 inch pound of torque (molded into the cover) for 28 foot pounds of torque. Needless to say, his creativity cracked the valve cover.

I have to agree with pontiac. Using RTV to make a seal works but it is truly a pain. The other problem that I found with it, is that no matter how careful you are, you tend to push a lot of the RTV off the back of the head when seating your valve cover and leaks down the back of the engine soon follow.

As for the torque, I just rechecked to be sure and it's 28 inch pounds as listed on the valve cover (83 CJ7). I'd use a 1/4" drive and snug it up. Make sure you tighten the bolts/valve cover nuts evenly and a little at a time. Personal experience with the plastic cover is it contorts and will not make a good seal if you overtighten one of the bolts and then hit the rest of them.


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