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Old 01-21-2013, 10:39 PM
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Default Headers (gaskets or sealent)
got an lq4 with a nasty header gasket leak. I assume the best option is to run gaskets but im new to these motors so im all ears. If gaskets are the way to go will fel pro do the trick? would be nice to snag some from my local parts store instead of ordering them.
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Old 01-22-2013, 01:37 AM
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Get the GM MLS steel gaskets if possible, otherwise find some Percy's layered aluminum gaskets.
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Old 01-22-2013, 01:40 AM
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Ive always preferred Fel Pro gaskets from the local parts store. I went through Kooks gaskets, and New GM MLS before the fel pros made it seal. Ive used them on 3 motors with great results.
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Old 01-22-2013, 02:16 AM
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I've had good results from the stock steel.
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Old 01-22-2013, 06:45 AM
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I've never had a bad experience with fel pro.. The dealer and parts store are right next to each other so ill just flip a coin.
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Old 01-22-2013, 08:27 AM
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What do you guys think about using ultra black? I've had a couple people say I should use the sealent over gaskets.
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Old 01-22-2013, 09:43 AM
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On thing is that to make sure and retorque the bolts a couple of times until the gaskets are seated.

Gary
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Old 01-22-2013, 12:25 PM
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Stock MLS gaskets. Work great and Studs.
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Old 01-22-2013, 04:08 PM
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Originally Posted by oscs
What do you guys think about using ultra black? I've had a couple people say I should use the sealent over gaskets.
No that silicone wont work, for one itultra black has a max temp of 500 degrees and headers hold exhaust gases up to 2000 degrees... Just use good gaskets...
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Old 01-23-2013, 09:45 PM
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anyone know the torque specs for the header bolts?
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Old 01-24-2013, 09:32 AM
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Only use the stock GM gaskets. Trust me! I went through so many gaskets trying to figure out what works and I finally went with the GM ones. They work flawlessly!
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Old 01-24-2013, 12:10 PM
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Already bought felpro
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Old 01-24-2013, 12:29 PM
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Use the felpro and see how they work since you obviously already bought them. Sealent absolutely should not be necessary, nor used on headers. Headers get far too hot for sealent like ultra black to do any good.
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Old 01-24-2013, 12:41 PM
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Fel-pro should be ok. Do not use any form of sealant.
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Old 01-26-2013, 08:32 AM
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^^^true^^
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Old 01-26-2013, 06:40 PM
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Well I installed the felpro's and problem solved.
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