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How long to wait before starting car after sealing exhaust with High Temp Red RTV?

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Old 05-21-2009, 05:49 AM
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KS0385
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Default How long to wait before starting car after sealing exhaust with High Temp Red RTV?

If I start it too soon, will it just blow out all the gasket material?
Old 05-21-2009, 06:06 AM
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Yes.
If you really want the best results, let it fully cure to the RTV specs.
Old 05-21-2009, 06:07 AM
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Originally Posted by KS0385
If I start it too soon, will it just blow out all the gasket material?
My guess is it's gonna just blow out reguardless. RTV and hot exhaust aren't supposed to go together. High temp means it can take the heat of being on your engine, NOT the tempratures found on your exhaust.
Old 05-21-2009, 06:32 AM
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normally you dont use it on exhaust. it does work to stop a leak for a quick fix.
Old 05-21-2009, 06:49 AM
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Originally Posted by halfass872
My guess is it's gonna just blow out reguardless. RTV and hot exhaust aren't supposed to go together. High temp means it can take the heat of being on your engine, NOT the tempratures found on your exhaust.
Its not meant to get as hot as the exhaust gasses but it can work.
The exhaust tubing and flanges don't get nearly as hot as the exhaust gas is and this is how it is able to work.

Yes, I was very surprised in the beginning when I first saw it in use, but it does work.

I also found that you need to let it fully cure if you want it to last.
Old 05-21-2009, 08:23 AM
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Seb-Specialty-Z
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It will hold up if you use the right type of silicone. I recommend the copper Permatex for use on exhaust flanges.
Old 05-21-2009, 09:59 AM
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The big question here is, why do you need this in the first place?? I've never had an exhaust leak.
Old 05-21-2009, 10:09 AM
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I think you should use the Copper stuff on exhaust parts.
Old 05-21-2009, 03:55 PM
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Originally Posted by halfass872
The big question here is, why do you need this in the first place?? I've never had an exhaust leak.
+1

Try tightning all your bolts down a little bit at a time till you have them
all tight then get them tourqed down to spec's.
Old 05-21-2009, 04:02 PM
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KS0385
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Originally Posted by NIZZMO
+1

Try tightning all your bolts down a little bit at a time till you have them
all tight then get them tourqed down to spec's.
Fast Intentions Test Pipes don't use a gasket at that area. They just specify to use the Red RTV.
Old 05-22-2009, 02:19 AM
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Originally Posted by KS0385
Fast Intentions Test Pipes don't use a gasket at that area. They just specify to use the Red RTV.
Make a gasket then!! That's gonna last way longer then RTV.
Old 05-22-2009, 03:15 AM
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Is this up top where the header and TP meet? Maybe order the copper gasket from berk that they supply. If the RTV doesnt work of course.
Old 05-22-2009, 04:27 AM
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NIZZMO
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Im not going to dispute Fast Intentions install directions, but I personally would rather make a set of gaskets. I had to do this with my Berk's at the Y pipe no leaks here. GL
Old 05-22-2009, 04:34 AM
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Ive used the orange nissan gasket maker or my turbonetics turbo between the turbo and downpipe. Ive even used it on the uppipe. NO leaks whatsoever.
Old 06-06-2009, 01:15 PM
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thekinn
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Search works. I had to resort to this due to leaks at the Cat-to-Y pipe. Though I didn't plan that well.. I need food, and can't drive the car (cure-time=24 hours). Time to dig in the cupboards.

..hoping to be leak free
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