Downpipes & Donut flanges?
Thread Starter
Registered User
Joined: Apr 2003
Posts: 66
Downpipes & Donut flanges?
Here's a couple of questions for those in the know.
Most aftermarket WRX downpipes I've seen don't use a Donut gasket like the stock unit. (I know there are exceptions, TurboXS being one).
My questions are:
1. Are the majority of DPs just bolting straight up to the catback section with a flat flange gasket?
2. If so, doesn't that create a problem since there is no flex-point? I know donut gaskets are used exactly for that reason.
3. Does anyone have any insight into this? Is it just generally accepted that the exhaust system doesn't really need a flex point?
Most aftermarket WRX downpipes I've seen don't use a Donut gasket like the stock unit. (I know there are exceptions, TurboXS being one).
My questions are:
1. Are the majority of DPs just bolting straight up to the catback section with a flat flange gasket?
2. If so, doesn't that create a problem since there is no flex-point? I know donut gaskets are used exactly for that reason.
3. Does anyone have any insight into this? Is it just generally accepted that the exhaust system doesn't really need a flex point?
Thread
Thread Starter
Forum
Replies
Last Post
stockblue2
Used Aftermarket Car Parts For Sale
4
Oct 18, 2007 06:27 PM
Speed Element
Engine and Drivetrain
3
Oct 25, 2006 11:33 AM
PacificMartin
Bay Area
1
Oct 30, 2003 08:37 AM
EJ20wrx
Engine/Power - EJ20T (pre-2006 WRX and JDM)
1
Aug 16, 2003 12:49 PM
