CorvetteForum - Chevrolet Corvette Forum Discussion

CorvetteForum - Chevrolet Corvette Forum Discussion (https://www.corvetteforum.com/forums/)
-   C3 Tech/Performance (https://www.corvetteforum.com/forums/c3-tech-performance-3/)
-   -   Valve cover gaskets - how tight? (https://www.corvetteforum.com/forums/c3-tech-performance/496650-valve-cover-gaskets-how-tight.html)

R. Bruno 02-19-2003 01:36 PM

Valve cover gaskets - how tight?
 
Simple question. When changing valve cover gaskets, how tight should the bolts be?Thanks in advance.

82dukman 02-19-2003 01:38 PM

Re: Valve cover gaskets - how tight? (R. Bruno)
 
When I did mine I just tightened them until they were snug and then a 1/4 turn more. Just like when changing an oil filter. Too hard and they will create gaps in the gasket and leak

gmcclurg 02-19-2003 01:41 PM

Re: Valve cover gaskets - how tight? (R. Bruno)
 
Going from memory, I think the specs are about 120 inch pounds - not foot pounds - which probably equates to snug plus 1/4 turn as said above.

R. Bruno 02-19-2003 02:15 PM

Re: Valve cover gaskets - how tight? (gmcclurg)
 
Any tricks on the gasket? I was going to clean both surfaces, put PCV on the cover side, then the gasket and then just bolt in place. Sound right?

Alwyn678 02-19-2003 02:29 PM

Re: Valve cover gaskets - how tight? (R. Bruno)
 

Any tricks on the gasket? I was going to clean both surfaces, put PCV on the cover side, then the gasket and then just bolt in place. Sound right?
Above advice is Good........I use rubber gaskets and Cleaning the cover of all debris is key to a good seal. I also put the gasket on first let it sit for a while with something on it to help it seal, then put it on the engine

Gator81 02-19-2003 02:53 PM

Re: Valve cover gaskets - how tight? (R. Bruno)
 
I like to use MrGasket valve cover gaskets. They're cork with a thin film of compound on both sides, something like RTV. I use Gaska-Cinch or something similar to glue and seal the gasket to the valve cover, and let it set up. After cleaning the head sealing surface with solvent, I bolt the cover down, just past snug. Gluing the gasket to the cover means that when I eventually have to take the cover off, the entire gasket will come off with the cover and I won't worry about gasket chunks going down the oil holes.

norvalwilhelm 02-19-2003 09:06 PM

Re: Valve cover gaskets - how tight? (R. Bruno)
 
I like to put studs in the head for the valve cover. You can buy extra long set screws and screw them into the head. After that you just place the gasket over the studs and then the valve cover over that. You will never again have a problem with the gasket slipping. Also if you ever screw up a stud just remove it and install a new one.

ram82fire 02-19-2003 09:19 PM

Re: Valve cover gaskets - how tight? (norvalwilhelm)
 
I also use the studs , I use 1/4 20 allen set screws . The socket head allows for easy installation and removal . I have been using the laminated cork style gaskets with the metal reinforcement ,no leaks or slippage . An additional advantage also they come in more than one thickness .

Geo

gliot1 02-20-2003 12:08 PM

Re: Valve cover gaskets - how tight? (R. Bruno)
 
I changed my gaskets last summer. I used the stock replacements; the factory torque settings, and have not had a leak. The only non-stock item I have are L-82 valve covers on a L-48. The cast aluminum covers are much more riged than the stamped covers. I was going to add permatex when doing it, but a Chrysler mechanic I know said if the orignal didn't use it, don't. Like wise he said most Chyslers use RTV only, so in that case its used. I followed that advice, and I have no leaks. Why GM didn't machine the lip where the valve cover binds to is beyond me. A nice flat machined surface about a quarter of an inch would have made life easy. That round lip is funky. :smash: :smash: :smash:


All times are GMT -4. The time now is 04:11 PM.


© 2024 MH Sub I, LLC dba Internet Brands