When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Several of the OBS guys use those. They're not as good as bellowed up pipes, but are better than the old fashioned donuts. Be sure to check your up pipes themselves to be sure they are not dimpled in where the gaskets go. I've seen several say it's best to install new pipes at the same time as the brass donuts.
I'm going to say that I would never use the brass donuts.
With exhaust heat the up-pipes will expand and contract in length.
My theory is that the brass donuts will grab onto the pipe so firmly that there will not be and "slip" at all when the pipes are changine length.
(I don't know if the stockers grab that tight, either, it's just a theory.)
That will put a huge stress on the turbo base and/or the pipes themselves.
Something has to be able to give somewhere or eventually a crack will show up.
.
Just thinking out loud here.
I just installed the small block chevy donuts on an obs, fit well, little thicker than stock, have heard they last better than stock. I guess time will tell.
x2 on the chebby donuts, Felpro 8194. I figured they would give a little while brass might bind, plus my pipes were a bit rough so softer material would seal better. I've had them on 2 years now. I can see a little soot blowing by but I still get 27 psi when I want it. They are slightly thicker, so new slightly longer bolts would be a good idea.
I just installed the small block chevy donuts on an obs, fit well, little thicker than stock, have heard they last better than stock. I guess time will tell.
I did the same, it's been over a year and still no leaks.
I don't know about you but I'm sticking with my E99 turbo. It spools faster and gives me plenty of PSI. I'm not looking to max out anything but if I can get 24psi out of a E99 then I'm happy and I get 20mpg on the hwy. So until it NEEDS to be replaced it is not a necessity and it works just fine, just harder to find parts for but that's why I fix everything myself. Rebuild kits are a life saver.
But yea, the cheby donuts are like 3 bucks a piece and they work great. That's what I would do, at least until you come to a final decision.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.