Sealing header collector

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Sep 22, 2015 | 08:30 AM

9T3VETTE

Thread Starter

Drifting

Joined: May 2007

Posts: 1,426

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From: Motor City

Sealing header collector

For the life of me, I cannot get the slip fit header collectors to seal on this thing. It's got the annoying tick, tick, tick, tick when warm.

Any suggestions? I ordered a set of these clamps from Summit, but unfortunately they wont fit because the o2 sensor bung is in the way

http://www.summitracing.com/parts/sum-692300

Sep 22, 2015 | 08:52 AM

blackozvet

Safety Car

Joined: Nov 2009

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From: Adelaide South Australia

have you tried a bead of RTV silicone ?

Sep 22, 2015 | 08:57 AM

WVZR-1

Team Owner

Joined: Sep 2003

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Quote:

Originally Posted by 9T3VETTE

http://www.summitracing.com/parts/sum-692300

Never needed to do it BUT I don't know why you can't modify the clamp to use even with the O2 bung obstruction OR perhaps just a quality "band style" clamp constructed similarly to the one you linked to except a single diameter.

http://www.summitracing.com/parts/wl...FUYXHwodMdsHBg

And since it's a "slip-fit" put your hands on a 2 3/4 or 3" or whatever size pipe expander and just confirm that the header outlet is actually round and formed correctly.

Last edited by WVZR-1; Sep 22, 2015 at 09:08 AM.

Sep 22, 2015 | 09:13 AM

JackDidley

Race Director

Joined: Sep 2003

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From: Database Error Indiana

Quote:

Originally Posted by blackozvet

have you tried a bead of RTV silicone ?

Red RTV will seal it.

Sep 22, 2015 | 01:06 PM

9T3VETTE

Thread Starter

Drifting

Joined: May 2007

Posts: 1,426

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From: Motor City

Thanks for the tip guys, i'll try sealing it up with RTV.

I thought about modifying the summit clamp to clear the o2 sensor bung, but my thinking would tell me the clamping force would be uneven and leak...

Sep 22, 2015 | 03:15 PM

WVZR-1

Team Owner

Joined: Sep 2003

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Quote:

Originally Posted by 9T3VETTE

WHY TRY - just correct it and be done with it. Get a correct pipe expander and make sure everything is round and your "slip-fit" should get well. I don't know what diameter your collector is supposed to be but I believe the "chain" auto-parts stores keep a larger for loan that should do likely 2 3/4 or 3.

A hole-saw should work on the clamp you have and I don't see how that could compromise the clamping force of the clamp.

Last edited by WVZR-1; Sep 22, 2015 at 03:18 PM.

Sep 22, 2015 | 08:16 PM

blackozvet

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Joined: Nov 2009

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From: Adelaide South Australia

Quote:

Originally Posted by 9T3VETTE

RTV does a good job of sealing, you can even use it as a header gasket, the only downside is if you take it apart you have to clean all the rtv off the surface before re-assembly.