95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners

Help: exhaust leak

Old Jun 3, 2004 | 07:10 PM
  #1  
terky's Avatar
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From: Everett, WA
Help: exhaust leak

I am putting new downey headers on my 22r and after i got them on and started it there are 2 exhaust leaks on both sides under where the exhaust enters the headers.

Its my only car and i need to know if its ok to drive it until i can get another gasket or if you guys know anything that will help stop the leak.

Thanks
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Old Jun 3, 2004 | 07:56 PM
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Its ok to drive for a short period of time. The gaskets will eventually blow out completely, and you will have no power at all.

What do you mean by "under where the exhaust enters the headers"? Are you talking about the exhaust ports of the head? Or the header primaries that meet at the collector? Got pics?
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Old Jun 3, 2004 | 08:23 PM
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Go buy a lot of Bubblegum!!!

96 is right, it should be fine for a little while, but it will eventually blow out the gasket completely and really sould like crap.
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Old Jun 3, 2004 | 11:26 PM
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Ok thanks. i just need to get to school and work. I will be getiing a new gasket from downey tomorrow. they say not to use the regular gasket cuz it isnt strong enough, does anybody know if Autozone would have a gasket that could handle it?

EDIT: Yeah the exhaust ports, it seems like the gasket split in half and the exhaust is leaking out between the 2 sides.

Last edited by terky; Jun 3, 2004 at 11:28 PM.
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Old Jun 4, 2004 | 12:23 AM
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Are you using copper based RTV sealant on both sides of the header gaskets? When I put my Thorley header on, I had to make sure to put a large bead of sealant on both sides of the header gaskets.

Oh yeah, did you replace the stock header nuts with stage-8 nuts or bolts? The factory OEM (exhaust manifold) nuts are a "one-time-use" part. If you reuse them, they won't tighten properly leading to leaks at the flange area in the future.
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Old Jun 4, 2004 | 08:00 AM
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Originally Posted by mikedog
Are you using copper based RTV sealant on both sides of the header gaskets? When I put my Thorley header on, I had to make sure to put a large bead of sealant on both sides of the header gaskets.

Oh yeah, did you replace the stock header nuts with stage-8 nuts or bolts? The factory OEM (exhaust manifold) nuts are a "one-time-use" part. If you reuse them, they won't tighten properly leading to leaks at the flange area in the future.
Nope didnt change the nuts, where can i get some more? And the instructions said to just spray it with the copper sealant, Is there something else i should put on there too?
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Old Jun 4, 2004 | 08:05 AM
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All of my toyota trucks leaked somewhere. If I fixed one leak , It started to leak somewhere else. I'm on my 3rd truck now. Is this just me?
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Old Jun 4, 2004 | 09:15 AM
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Old Jun 4, 2004 | 09:25 AM
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Originally Posted by terky
Nope didnt change the nuts, where can i get some more? And the instructions said to just spray it with the copper sealant, Is there something else i should put on there too?
The sealant will be in a tube. Just get a new gasket and use the sealant (follow the instructions on the tube). Then be sure to cross-torque it slowly and use new nuts.
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Old Jun 4, 2004 | 09:35 AM
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Originally Posted by <96 Runner>
The sealant will be in a tube. Just get a new gasket and use the sealant (follow the instructions on the tube). Then be sure to cross-torque it slowly and use new nuts.
can i get the nuts at a place like Autozone?
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Old Jun 4, 2004 | 11:01 AM
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Ok wnet to autozone and got everything. I got a gasket from Fel-pro. In the felpro box there are 2 gaskets. one that has metal on one side and the other is paper or whatever on both sides. which gasket should i use?
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Old Jun 4, 2004 | 12:08 PM
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Old Jun 4, 2004 | 01:22 PM
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Ok i put a new gasket on tightened it all up and now i am going to let it sit and let the sealant dry, i figure if its wet when i start it with my luck i will blow a big hole in the seal. anyways thanks for all your help guys!!!

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Old Jun 4, 2004 | 02:47 PM
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Originally Posted by terky
Ok thanks. i just need to get to school and work. I will be getiing a new gasket from downey tomorrow. they say not to use the regular gasket cuz it isnt strong enough, does anybody know if Autozone would have a gasket that could handle it?

EDIT: Yeah the exhaust ports, it seems like the gasket split in half and the exhaust is leaking out between the 2 sides.

Terky

I have been running a stock gasket with my Downey header for about 4years with no leaks. When I got my header I use Downey gasket and even follwed there instruction's and it leaked. I remember something about that if you used a stock gasket it would mess up the egr system. But that was not the case. It works fine more me even in the hot summer days in az.


Greg
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