Question for those running 3" dp and exhaust
12-03-2003, 09:12 AM
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Question for those running 3" dp and exhaust
I've got most of my piping for my DP and exhaust and, pardon my n00bish question, but, where did you get your 3" donut gasket from? I've searched the archives and got nothing really. I've searched online for 3" donut gaskets, but the biggest I find are 2.5". I stopped by Pep Boys to see if maybe they stock it and the parts guy said the biggest they could get is 2.5", that they could only order items for replacement stock parts. I've got a spare 2.25" laying around here, but I'm not about to taper the ends of the piping to fit it on there.
Would any muffler shops carry said donut gasket? Any help is appreciated. Thanks!
Would any muffler shops carry said donut gasket? Any help is appreciated. Thanks!
12-03-2003, 09:16 AM
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Re: Question for those running 3" dp and exhaust (Dinuguan)
not sure where you can get a 3" but if not you can always weld on a 3" flex section instead
12-03-2003, 09:22 AM
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Re: Question for those running 3" dp and exhaust (B18Flip)
Thanks for the reply
Yeah, I was planning on getting the flex section welded on, but at the end of the DP, right where the (3 bolt) flange is welded on, typically don't you need a donut? Like on a header, isn't a donut gasket necessary in order to ensure a seal between the header and the exhaust? That's sort of what I'm getting to. I'd assume it's necessary to put one on there, but then again I'm not sure.
Yeah, I was planning on getting the flex section welded on, but at the end of the DP, right where the (3 bolt) flange is welded on, typically don't you need a donut? Like on a header, isn't a donut gasket necessary in order to ensure a seal between the header and the exhaust? That's sort of what I'm getting to. I'd assume it's necessary to put one on there, but then again I'm not sure.
12-03-2003, 09:33 AM
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Re: Question for those running 3" dp and exhaust (Dinuguan)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dinuguan »</TD></TR><TR><TD CLASS="quote">Thanks for the reply
Yeah, I was planning on getting the flex section welded on, but at the end of the DP, right where the (3 bolt) flange is welded on, typically don't you need a donut? Like on a header, isn't a donut gasket necessary in order to ensure a seal between the header and the exhaust? That's sort of what I'm getting to. I'd assume it's necessary to put one on there, but then again I'm not sure.
</TD></TR></TABLE>
I'm not sure what your set up is exacly but your flanges should seal up with a regular 3 bolt gasket....granted your flanges match up and are true and flat. I think the donut gaskets are used when there's no flex section used like in the pic, so the exhaust can flex with the engine.
Yeah, I was planning on getting the flex section welded on, but at the end of the DP, right where the (3 bolt) flange is welded on, typically don't you need a donut? Like on a header, isn't a donut gasket necessary in order to ensure a seal between the header and the exhaust? That's sort of what I'm getting to. I'd assume it's necessary to put one on there, but then again I'm not sure.
</TD></TR></TABLE>
I'm not sure what your set up is exacly but your flanges should seal up with a regular 3 bolt gasket....granted your flanges match up and are true and flat. I think the donut gaskets are used when there's no flex section used like in the pic, so the exhaust can flex with the engine.
12-03-2003, 09:34 AM
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Re: Question for those running 3" dp and exhaust (Dinuguan)
Those donuts are mainly used on stock exhausts. If you have an aftermarket exhaust, all you need are the triangle flanged exhaust gaskets. You can apply some exhaust sealant on those too to make sure they seal.
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12-03-2003, 09:45 AM
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Re: Question for those running 3" dp and exhaust (B18Flip)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18Flip »</TD></TR><TR><TD CLASS="quote">
I'm not sure what your set up is exacly but your flanges should seal up with a regular 3 bolt gasket....granted your flanges match up and are true and flat. I think the donut gaskets are used when there's no flex section used like in the pic, so the exhaust can flex with the engine. </TD></TR></TABLE>
Sweet! Thanks bro. Really didn't know if I needed what I thought I did. Damn finals week!
I'm not sure what your set up is exacly but your flanges should seal up with a regular 3 bolt gasket....granted your flanges match up and are true and flat. I think the donut gaskets are used when there's no flex section used like in the pic, so the exhaust can flex with the engine. </TD></TR></TABLE>
Sweet! Thanks bro. Really didn't know if I needed what I thought I did. Damn finals week!
12-03-2003, 12:41 PM
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12-03-2003, 01:04 PM
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Re: Question for those running 3" dp and exhaust (newgsrdriver)
LOL yeah i borrowed your pic 
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by newgsrdriver »</TD></TR><TR><TD CLASS="quote">Hey thats my floor!
I am not using a donut gasket with a flex section in the TP, no problems here.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by newgsrdriver »</TD></TR><TR><TD CLASS="quote">Hey thats my floor!
I am not using a donut gasket with a flex section in the TP, no problems here.</TD></TR></TABLE>
12-03-2003, 01:24 PM
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Re: Question for those running 3" dp and exhaust (quikB18B)
You must have some kind of strange setup if you are needing a 3 inch donut. I purchased the flat 3in gasket from Autozone. It came with 2 of the 3 hole flanges to weld on the exhaust piping. I you really need a 3inch donut go here: http://www.roadraceengineering...s.htm
Modified by TurboR1391 at 7:33 PM 12/3/2003
Modified by TurboR1391 at 7:33 PM 12/3/2003
12-04-2003, 12:08 AM
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Re: Question for those running 3" dp and exhaust (TurboR1391)
No, don't go to ^ that link.
That's a piping donut, not the crush donut like what he thinks he needs.
That link to summit racing is exactly what you need to have a 3" exhaust and 3" downpipe fitted together. Having a 3" flex pipe in there somewhere is a requirement, also, or the torque flex of the motor will rip the exhaust and/or downpipe apart.
That's a piping donut, not the crush donut like what he thinks he needs.
That link to summit racing is exactly what you need to have a 3" exhaust and 3" downpipe fitted together. Having a 3" flex pipe in there somewhere is a requirement, also, or the torque flex of the motor will rip the exhaust and/or downpipe apart.
12-04-2003, 03:21 AM
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Re: Question for those running 3" dp and exhaust (SiR Kid)
the donut in the stock exhaust system is to allow for flex when your motor torques, or yo drag your exhaust ona speedbump or something...
they use the donut stock because it is MUCH cheaper than a flex section..
if you are using flex, like everyone already said, you will be fine with a generic flange
they use the donut stock because it is MUCH cheaper than a flex section..
if you are using flex, like everyone already said, you will be fine with a generic flange
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