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Valve Cover Bolt Torque
I recently replaced a leaking stock valve cover gasket. I tried to straighten and flatten the sides, then glued the gasket (Fel-Pro cork) to the cover, Then I put a smear of grease on the gasket surface. I have always just used a nut driver or 1/4" ratchet handle and tightened that to something that felt snug. I've never had any big leaks, but over time they tended to leak.
I've never had an inch-lb torque wrench, but since I do now, I thought I'd see what the service manual called out for torque. My 62 manual calls for 48-80 lb-in. Now that's only approximately 4-7 lb-ft. So I started with my nut driver to snug them down. Then I used the torque wrench. I only got to about 25 lb-in before I stopped, I couldn't bring myself to go more. At that point, I could barely turn them with the nut driver. Does anyone really use the recommended torque? Thanks, Les |
Never used anything other than feel to snug them down, using either a nut driver or a 1/4" drive ratchet.
I don't know anyone who uses any kind of torque wrench to tighten valve cover bolts. |
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I've been using rubber gaskets instead of cork, I think they work better plus they're reusable. |
If you want to use your inch lb. torque wrench, tighten to 60 in. lbs. That's 5 ft lbs and a 5/16-18 fastener can certainly take that. As said, most just use a nut driver.
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Not unusual to have to retighten valve covers with new gaskets after a few heat cycles. Just check them every once in a while.
Jim |
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