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Message
Need help OT mechanics
Posted on 7/24/17 at 9:05 pm
Posted on 7/24/17 at 9:05 pm
Sounds like a dumb question but...
I'm replacing the valve cover on my old car. I've got a new cork gasket, but the head was just worked on, so the "old" gasket is practically brand new. It's rubber and mine is cork. Should I leave the old one on there or replace with the cork?
Rubber
Cork
I'm replacing the valve cover on my old car. I've got a new cork gasket, but the head was just worked on, so the "old" gasket is practically brand new. It's rubber and mine is cork. Should I leave the old one on there or replace with the cork?
Rubber
Cork
This post was edited on 7/24/17 at 9:11 pm
10
Posted on 7/24/17 at 9:08 pm to alajones
I would use the new one. Why take the chance of a nick you dont see?
Posted on 7/24/17 at 9:09 pm to Tigerswillprevail
I wasn't sure if I should just always replace regardless. I was thinking the rubber one was superior quality to the cork one.
Posted on 7/24/17 at 9:10 pm to alajones
Definitely go with the cork cause that blue is a pretty color.
Posted on 7/24/17 at 9:10 pm to alajones
When I've messed with valve covers, I've skipped the cork entirely and just used the tube of stuff from autozone. (ask at the counter, they'll point you to the right tube...)
ETA- congrats to you for working on your own car though.
ETA- congrats to you for working on your own car though.
This post was edited on 7/24/17 at 9:12 pm
Posted on 7/24/17 at 9:10 pm to alajones
Use the cork one. The rubber one has stress lines and cracks you can't see that will fail sooner than the cork one.
Posted on 7/24/17 at 9:10 pm to Tigerswillprevail
Should use a new rubber one
Posted on 7/24/17 at 9:11 pm to alajones
For a valve cover it probably doesnt really matter. Both works fine.
Posted on 7/24/17 at 9:11 pm to Jason in BR LA
Thanks guys. I'm replacing it.
Posted on 7/24/17 at 9:11 pm to alajones
I don't know what engine that is, but the cork gasket on my CJ7 always leaked.
Posted on 7/24/17 at 9:13 pm to dragginass
Did it have that pretty blue on it?
Posted on 7/24/17 at 9:19 pm to alajones
Cork with Permatex red non hardening gasket sealer both sides.
Posted on 7/24/17 at 9:26 pm to alajones
Use a new rubber gasket. There is a reason the cork gaskets are found in the Ultta low priced gasket sets.
Posted on 7/24/17 at 9:50 pm to dragginass
Finished it. Looks much better IMO.
Posted on 7/24/17 at 9:51 pm to alajones
Whichever you go with do not over tighten the bolts. They should only be around 25-30 inch pounds.
Posted on 7/24/17 at 9:53 pm to highcotton2
frick me
This post was edited on 7/24/17 at 9:54 pm
Posted on 7/24/17 at 9:58 pm to highcotton2
Yeah. I don't have a torque wrench. I was wondering about that.
Posted on 7/24/17 at 10:09 pm to alajones
New rubber would be superior, hands down. The reason for this is that it compresses better than cork. If you over tighten the cork, it will split. Try to tighten fron the middle out, as evenly as you can. I use permatex between the cover and gasket, essentially gluing the gasket to the cover. Then a thin coat of silicone on the gasket before you mate it to the head.
Biggest thing is to not over tighten the bolts. If you do it right, they just don't have to be very tight. If you see gasket squeezing out under the bolt, you've probably over tightened it.
Biggest thing is to not over tighten the bolts. If you do it right, they just don't have to be very tight. If you see gasket squeezing out under the bolt, you've probably over tightened it.
Posted on 7/24/17 at 10:11 pm to alajones
Tighten them from the middle out in either direction, also. The ones on the end should be last.
Posted on 7/24/17 at 10:18 pm to Sayre
I guess I'll be buying a rubber one and a torque wrench and replacing it again.
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