Exhaust leak - 02 sensor
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Car: 1987 IROC Z/28 Camaro
Engine: 355
Transmission: T56
Axle/Gears: 9 Bolt w/ 4.10s
Exhaust leak - 02 sensor
I have had an exhaust leak ever since I put my new headers in. I put in a new 350 at the same time, so I have had to tune it with the leak. I recently put new gaskets in, and the damn things still leak.
Anyway, my question is, how is this leak going to effect my tuning? Should I quit trying to tune it until I get the time to pull my headers again?
Thanks.
Anyway, my question is, how is this leak going to effect my tuning? Should I quit trying to tune it until I get the time to pull my headers again?
Thanks.
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Re: Exhaust leak - 02 sensor
As far as using the O2 sensor for tuning, no, can not use it with any exhaust leaks. Even a leak a foot or two down the pipe from the sensor.
Just a note, I have had to weld up header exhaust port flanges in order to get it to mate up with a gasket. It is something that one hates to even think about having to do. But once it is done it is worth it.
RBob.
Just a note, I have had to weld up header exhaust port flanges in order to get it to mate up with a gasket. It is something that one hates to even think about having to do. But once it is done it is worth it.
RBob.
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Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
Re: Exhaust leak - 02 sensor
I will be doing this soon except the 350 but, what gaskets did you use and what headers do you have?
Let me know so I can prepare myself just in case.
Let me know so I can prepare myself just in case.
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Car: 1987 IROC Z/28 Camaro
Engine: 355
Transmission: T56
Axle/Gears: 9 Bolt w/ 4.10s
Re: Exhaust leak - 02 sensor
I am using Hooker headers. First I tried Summit Copper Gaskets. They leaked like a syph. I am now running Percy's Dead Soft Aluminum Gaskets. They are better, but still not sealing completely. I used stage 8 bolts the last time too, so it does not seem to be a matter of the bolts coming loose.
Anyway, good luck guys.
Anyway, good luck guys.
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Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
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Re: Exhaust leak - 02 sensor
Well when I get mine Ill try Fel-Pro. See how they work.
P.S. My buddy is using his gaskets he got with the hookers and they sealed fine...but every motor/part is different.
P.S. My buddy is using his gaskets he got with the hookers and they sealed fine...but every motor/part is different.
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Re: Exhaust leak - 02 sensor
A round gasket would leak at a side, top or bottom (or a mix of). A square gasket would leak at a/the corner(s).
So I picked a gasket that I felt would continue to be available (IIRC, Mr. Gasker Ultra seal round), pulled the headers, welded up the bead on the ports where it would leak, filed bead flat, re-installed. No more leaks, and can use an off the shelf gasket instead of the manufactuers special now unavailable gasket.
RBob.
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Car: 89' IROC-Z
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Re: Exhaust leak - 02 sensor
I see....Hmm, well, Ill be sure to let you all know when I get mine if I have problems....I hope not as I dont weld.
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Car: 1989 IROC
Engine: L98
Transmission: 700R4
Axle/Gears: BORG WARNER /3:70
Re: Exhaust leak - 02 sensor
use the grey permatex. i've used it a couple of times and it works wonders.
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Car: 1989 IROC
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Re: Exhaust leak - 02 sensor
i put the sealant on both sides of the gasket and bolted it up right away.
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Re: Exhaust leak - 02 sensor
Take a good look at the gaskets and where the leak was before trying to fix it with sealant. It may be that there is minimal contact area and requires welding the exh. flange to get it to seal properly. Put a straight edge on the flange. I have fixed many exhaust leaks with a little welding and a file. All of which could have been fixed with sealant for only a short while.
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