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Old 08-03-2010, 10:28 PM   #1
Ackpacket
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Default valve cover gasket substitute

Can I use ONLY rtv to form a gasket for my valve cover? My thoughts were this: put in enough rtv to fill the groove in the valve cover and stand a bit proud. Put the valve cover on hand tight. Allow the rtv to cure completely and it should be in the same shape as a molded gasket, filling the groove and flattening between the cover just like a molded gasket, and should be the same hardness as a molded gasket. Then I can torque the cover down completely and it should compress (not smush/smear) and add tension to the cured rtv just like a gasket. Thoughts?

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Old 08-03-2010, 10:44 PM   #2
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Default Re: valve cover gasket substitute

Year and model?

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Old 08-04-2010, 05:26 AM   #3
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Default Re: valve cover gasket substitute

2002 sl2 dohc

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Old 08-04-2010, 08:03 AM   #4
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Default Re: valve cover gasket substitute

If you have to pull the cam cover off again for any reason, you're going to really hate yourself for having used RTV last time

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Old 08-04-2010, 11:52 AM   #5
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Default Re: valve cover gasket substitute

Quote:
Originally Posted by Ackpacket View Post
Can I use ONLY rtv to form a gasket for my valve cover? My thoughts were this: put in enough rtv to fill the groove in the valve cover and stand a bit proud. Put the valve cover on hand tight. Allow the rtv to cure completely and it should be in the same shape as a molded gasket, filling the groove and flattening between the cover just like a molded gasket, and should be the same hardness as a molded gasket. Then I can torque the cover down completely and it should compress (not smush/smear) and add tension to the cured rtv just like a gasket. Thoughts?
Go for it.

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Old 08-04-2010, 02:13 PM   #6
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Default Re: valve cover gasket substitute

What would be the point? Don't tell me it's to save the $25 on the gasket. Given the time you'd be spending on this method, you're not paying yourself much. Even if your time were free, $25 over, say, 100,000 miles is a penny every 40 miles.

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Old 08-04-2010, 05:06 PM   #7
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Default Re: valve cover gasket substitute

Don't bother with the rtv, get a preformed gasket and do it the right way. If you ever have to replace that gasket again you will be glad you did it that way. Don't forget the two dabs of rtv where the front cover meets the block.

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Old 08-04-2010, 08:32 PM   #8
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Default Re: valve cover gasket substitute

I tried this once on my '99, which has the same valve cover. Yeah... buy the preformed gasket. It is TERRIBLE to clean the RTV out of the groove - I think I'd rather go to the junkyard & buy a whole different valve cover than do that again.

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