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Old 01-21-2012, 11:44 PM   #1
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header leak

so i have no name headers on stock heads and im not having any luck with gaskets.. i got the header flanges milled and they still end up ticking eventually. maybe copper gaskets? mill the heads? thanks
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Old 01-21-2012, 11:53 PM   #2
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Where did you get your headers from ?
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Old 01-21-2012, 11:55 PM   #3
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idk they came with the car when i got it a year ago
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Old 01-21-2012, 11:58 PM   #4
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Quote:
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Where did you get your headers from ?
The black market
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Old 01-22-2012, 12:03 AM   #5
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What year mustang?

---------- Post added at 01:03 AM ---------- Previous post was at 01:00 AM ----------

Quote:
Originally Posted by WhiteCobra94
What year mustang?
If you have 94-95 check the egr tube that connects to your passenger side header!

Or the headers are just cheap metal and are not sitting flushed with the heads!!
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Old 01-22-2012, 12:03 AM   #6
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its an 89
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Old 01-22-2012, 12:39 AM   #7
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check to make sure the header bolts just didnt back out a little bit.sometimes from the heat they loosen up without hurting the gasket.
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Old 01-22-2012, 12:44 AM   #8
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Re: header leak

Try coating both sides of the header gasket with Permatex Ultra Copper silicone sealer.
Wipe on a smooth, thin coat with your fingers.
Let it dry completely.
Wipe a thin layer of grease on the heads and header flanges.
Put some anti-seize on the head bolts, install them and torque them to spec.


After a few heating and cooling cycles, check the header bolt torque again.
If they have loosened, re-torque the bolts and check them again after a few more heating and cooling cycles. They will eventually seat in and stay torqued.
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Old 01-22-2012, 12:50 PM   #9
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thanks. if all fails is it a better idea to remove heads n have rebuilt and milled... or new headers??
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Old 01-22-2012, 01:09 PM   #10
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Re: header leak

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Originally Posted by vigilnash_89lx View Post
thanks. if all fails is it a better idea to remove heads n have rebuilt and milled... or new headers??
New headers would be the cheaper and easier fix, but even that may not be necessary.


You can run a large flat file along the header flanges and exhaust ports on the heads to see if they are flat. If not work them down until they are.


A set of locking header bolts would ensure that the headers stay fastened to the heads properly.
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Old 01-22-2012, 07:07 PM   #11
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Quote:
Originally Posted by vigilnash_89lx
thanks. if all fails is it a better idea to remove heads n have rebuilt and milled... or new headers??
At auto zone they have some soft alum header gaskets that are thick... I had a leak and put copper ones on and it still leaked...these work great only $20
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