GreenEagle
Probationary Member
- 16
- 0
- Nov 22, 2002
-
Danville_CA
Lately I've been researching the pros/cons of running an equal length tubular manifold on a dual purpose street/track car. As many of you know, equal length runners benefit power and turbo spool up. (One site actually claims an 800 RPM drop in spool time ) The downside is, if not constructed properly with thick runner walls and high grade materials such as 321 stainless, they are prone to cracking. I have looked around and found a few people making these for DSM's:
DN Performance http://www.dnperformance.com/eclipse.html
Reasonably priced and looks like a nice unit, although I believe it is only 304 stainless, which is not great for turbo applications because of the high exhaust temps.
Full Race Motorsports http://www.full-race.com/products
Looks nice, VERY thick runner walls, only 304 stainless though, EXPENSIVE!
ETD Racing http://www.etdracing.com/manifold.html
From what I can tell these guys are developing on one for DSM's. If it turns out like the ones they make for other imports, it should be great: 321 stainless, thick runner walls, and very reasonably priced.
I know some of you out there run this type of manifold, and it would be great to hear from you. How many RPMs did it lower your spool? Did you notice any power gains? It sure would be nice to have a 400HP, 50 trim street car that spooled by 3400!! But then again, maybe these manifolds aren't all they're cracked up to be..
DN Performance http://www.dnperformance.com/eclipse.html
Reasonably priced and looks like a nice unit, although I believe it is only 304 stainless, which is not great for turbo applications because of the high exhaust temps.
Full Race Motorsports http://www.full-race.com/products
Looks nice, VERY thick runner walls, only 304 stainless though, EXPENSIVE!
ETD Racing http://www.etdracing.com/manifold.html
From what I can tell these guys are developing on one for DSM's. If it turns out like the ones they make for other imports, it should be great: 321 stainless, thick runner walls, and very reasonably priced.
I know some of you out there run this type of manifold, and it would be great to hear from you. How many RPMs did it lower your spool? Did you notice any power gains? It sure would be nice to have a 400HP, 50 trim street car that spooled by 3400!! But then again, maybe these manifolds aren't all they're cracked up to be..