DougsfastZ
4.1
- Joined
- Jan 30, 2004
When shoping for a front mount, I did a ton of research on here to see what would be the best solution for my combo. I ran across many people asking for some real world numbers as far as how well an intercooler did it's job.
Up until a few months ago, I was trying to get the car to run 11's on the stock turbo. I started logging the temp on the outlet of the stock, ported intercooler (not a dutt neck). Readings would be around 190 degrees in the South Florida heat @ 25 psi of boost.
Now in June, I changed the stocker out for a TE45A and cranked the boost to 27 psi. I also changed the intercooler with a stock, dutt neck one. Outlet temps soared to 210 degrees, ambient was 85 degrees out. Even with a single M15 nozzle of meth, this would only allow the new turbo to not make any power past 27 psi and timing was taken all the way down to 20/18 in order to keep knock away.
Needless to say, that's when I started shopping for a front mount.
I ended up with an old style GN1 front mount in good shape. I've read here that it is a Chinese core and that they won't perform as well as the ones made by vendors here. I wish I had the coin for a $1000 front mount but it's not in the cards. The one I got measures 24x11x3, a good amount bigger then the stocker. Went racing last night with the same weather conditions in June, 85 degrees, and saw 155 degrees at the outlet of the intercooler. Needless to say, the ~55 degree drop in temps allowed me to go to 32 psi and 26 degrees of timing with very little knock.
In summary.
TE45A, 85 degrees ambient, 27 psi, 20/18 timing, dutt neck stocker = 210 degrees outlet temp
TE45A, 85 degrees ambient, 32 psi, 26/24 timing, GN1 front mount = 155 degrees outlet temp
All the temp numbers listed above were measured PRE meth nozzle.
Not sure how much better a Cotton's, RJC, etc front mount would compare to these numbers, but I'm pleased with the results.
Here are a few pics.
Up until a few months ago, I was trying to get the car to run 11's on the stock turbo. I started logging the temp on the outlet of the stock, ported intercooler (not a dutt neck). Readings would be around 190 degrees in the South Florida heat @ 25 psi of boost.
Now in June, I changed the stocker out for a TE45A and cranked the boost to 27 psi. I also changed the intercooler with a stock, dutt neck one. Outlet temps soared to 210 degrees, ambient was 85 degrees out. Even with a single M15 nozzle of meth, this would only allow the new turbo to not make any power past 27 psi and timing was taken all the way down to 20/18 in order to keep knock away.
Needless to say, that's when I started shopping for a front mount.
I ended up with an old style GN1 front mount in good shape. I've read here that it is a Chinese core and that they won't perform as well as the ones made by vendors here. I wish I had the coin for a $1000 front mount but it's not in the cards. The one I got measures 24x11x3, a good amount bigger then the stocker. Went racing last night with the same weather conditions in June, 85 degrees, and saw 155 degrees at the outlet of the intercooler. Needless to say, the ~55 degree drop in temps allowed me to go to 32 psi and 26 degrees of timing with very little knock.
In summary.
TE45A, 85 degrees ambient, 27 psi, 20/18 timing, dutt neck stocker = 210 degrees outlet temp
TE45A, 85 degrees ambient, 32 psi, 26/24 timing, GN1 front mount = 155 degrees outlet temp
All the temp numbers listed above were measured PRE meth nozzle.
Not sure how much better a Cotton's, RJC, etc front mount would compare to these numbers, but I'm pleased with the results.
Here are a few pics.
