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Re: leaking headers 440 HELP!
[Re: jbcuda]
#468817
09/15/09 11:22 AM
09/15/09 11:22 AM
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Joined: Oct 2003
Posts: 1,249
Las Vegas
JeffC
pro stock
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pro stock
Joined: Oct 2003
Posts: 1,249
Las Vegas
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Quote:
440 cuda with hooker header i have changed gaskets twice and used several different thread sealers and cant stop coolant leaks. any suggestions?
Do you have an exhaust leak and a coolant leak, or just a coolant from the header bolts?
To seal the header bolts I like teflon tape.
With hooker and headman headers I have had to run two sets of felpro header gaskets to get them to seal.
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Re: leaking headers 440 HELP!
[Re: jbcuda]
#468820
09/15/09 11:48 AM
09/15/09 11:48 AM
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Joined: Jan 2003
Posts: 543
Indiana, Just Off I-70
BradD
mopar
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mopar
Joined: Jan 2003
Posts: 543
Indiana, Just Off I-70
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Use RTV for high heat apps.! Give it time to set up before adding coolant.
I can sell you gaskets that wont leak! PM me.
Brad
Dorn Autocraft
Check out the Dorn's 69 Barracuda "Switchblade" in the Nov.2010 MCG
Check out the Dorn's refurbished 36 Ford in the Feb.2011 Street Rodder
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Re: leaking headers 440 HELP!
[Re: BradD]
#468821
09/15/09 10:10 PM
09/15/09 10:10 PM
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Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
Magnum
master
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master
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
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Teflon may work. I've read about it here more than once but it's not what it's made for.
Teflon is for lubrication pipe thread.
Header bolts are going to be a bit of a challenge to seal. Straight threads were never designed to seal anything.
The ultimate answer is exhaust studs. They have a shoulder in between the 2 threads that you bottom out and creates a seal. For extra insurance. I'd still smear high temp rtv silicone on the threads.
No garantees with rtv silicone on header bolts but it's worked for me 95% of the time and that last %5, just redo it. It'll seal
69 Super Bee, 93 Mustang LX, 04 Allure Super
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& you can trim the outer fine thread section for more clearance if that will enable you to use them. If you have enough threads for the nut to fit flush you're good.