Twin-scroll skeptics...
I was pretty sure on what i wanted and got over my twinscroll itch, but now sitting in Afghanistan not being able to play with my little project, i am getting an itch for a twinscroll again. Yay...
Anyone else rocking the BC 2.4l?
Anyone else rocking the BC 2.4l?
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From: Thornton, CO & Pasadena, MD
I'm definitely thinking of downgrading from a ts gt40r to a ts gt30r. Im lookin more for fast spool and a little less top end. Maybe shooting for 400ish whp and 350tq? is a spool in the mid to low 3s possible on a 2.3?
Thoughts?
Thoughts?
since you had a twinscroll 40R you can swap to any T4 twinscroll turbo -- there are borgwarner options worth considering bu i am not sure if that twinscroll 30R would do the job
If i were cruising in the 4k range, it would go full spool almost instantly (500-600) RPM when going to WOT.
My last log that I took before selling it, at 2300 rpm and -5.4psi, 23.5 throttle position I went WOT. The first reading of 100% throttle was at 2500 rpm and .791psi. And I hit 28.5 psi (max psi at that time) at 4650 rpm.
On average the boost curve was 1500 rpm. Full boost was hit by 4000-4500 rpm depending on where in the rpm band I started the WOT pull.
My last log that I took before selling it, at 2300 rpm and -5.4psi, 23.5 throttle position I went WOT. The first reading of 100% throttle was at 2500 rpm and .791psi. And I hit 28.5 psi (max psi at that time) at 4650 rpm.
On average the boost curve was 1500 rpm. Full boost was hit by 4000-4500 rpm depending on where in the rpm band I started the WOT pull.
Twin Scroll T4 35R seems like a really nice option, and the new BW stuff is tasty as well. If I needed more power, or was starting a build now that's what I would do for sure.
For now my 2.3L and GT30R does what I need on E85.
Boost at 24 psi by 4050 on pump gas.

28 psi by 4200RPM on e85

28 psi e85 power graph
For now my 2.3L and GT30R does what I need on E85.
Boost at 24 psi by 4050 on pump gas.

28 psi by 4200RPM on e85

28 psi e85 power graph



