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What valves should I get?

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Old Jun 26, 2022 | 06:23 PM
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Default What valves should I get?

Basically the title. Ive never done something like this, but I think one of my exhaust valves has cracked and is causing my car to idle super rough. I want to replace them, but have no idea what to get? Any pointers or tips also welcome!
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Old Jun 26, 2022 | 07:44 PM
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Originally Posted by Preston.Corvette
Basically the title. Ive never done something like this, but I think one of my exhaust valves has cracked and is causing my car to idle super rough. I want to replace them, but have no idea what to get? Any pointers or tips also welcome!
I would wait till you actually pull the head and verify whats wrong.
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Old Jun 26, 2022 | 08:35 PM
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Originally Posted by augiedoggy
I would wait till you actually pull the head and verify whats wrong.
Good advice. You can get Melling valves from Rock Auto for cheaper than anywhere else.

Scotty
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Old Jun 26, 2022 | 08:46 PM
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Originally Posted by Preston.Corvette
Basically the title. Ive never done something like this, but I think one of my exhaust valves has cracked and is causing my car to idle super rough. I want to replace them, but have no idea what to get? Any pointers or tips also welcome!
Have you done a leakdown test to verify that..? I've never seen a "cracked" exhaust valve... If you're just going to repair and replace a single valve, you can simply use a stock replacement Sealed Power valve available from any NAPA store for about $10. The gasket set will cost you more than the valve, but you better verify your problem before you go tearing into it...
Lars

Last edited by lars; Jun 26, 2022 at 08:55 PM.
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Old Jun 26, 2022 | 09:52 PM
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Verify that the valve is allowed to close fully and not hanging up.
Did someone just set the valve-lash?

With the valve cover off, jog the key until the adjacent valve is opening. Now grab the suspect rocker.
Should have "some" play in it.

Last edited by HeadsU.P.; Jun 26, 2022 at 09:58 PM.
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