Originally posted by Rev. Po-Jay:
I have a 2001 Returnless motor with a return fuel system... Go figure. I am using the SVT Cams. Full Oval port 3.0L UIM and LIM.



Jason,

I'm doing some comparison of the oval port heads and I have a few questions.

1.) What boost do you see at 3000 rpm on your engine? Specifically, I would like to know what the boost pressure is in 1K rpm increments from 3000-7000 so I can use that in the comparison.

2.) Did you do any head work to the 3L oval port heads?

3.) What did you do with the secondaries from the stock computer? Did you turn them off or what? In your graph you have a very small customary spike at 3650 rpm where the secondaries are supposed to be. Is that residual from the stock timing curve?

4.) What boost pressure do you have at 36-3700 rpm?

5.) What exhaust manifolds, type of exhaust and diameter of piping?

6.) Where is the intake air filter located, engine bay or fender?

Sorry for the barage of questions, I'm finally on leave and can afford to sit down and do some data correlation between your engine and mine.

I'm comparing torque, boost and power at various rpm. Its a good comparison because we both had 91 octane fuel from the same area and used the same dyno.
Our engines have different head designs but essentially the same chamber size and valve size. i.e. similar chamber and ~equal compression of 10:1.
Same type of fuel system and same type of cams along with the same size throttlebody at that time too.



Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black