Hks 3037 On Rb25 Neo

[discopotato03]

Literally the only difference between a GT3037 Pro S and a real GT3076R is the turbine housing and the bell mouthed inlet insert . I don't think there is much if any difference actuator wise at the same rating .

A .

[Mitch34]

Just curious what power would a gt3076 .63 external gate flow being a twinscroll with a twinscroll manifold?

[Tonba]

Just curious what power would a gt3076 .63 external gate flow being a twinscroll with a twinscroll manifold?

T3 0.63A/R would be super choked up.

[discopotato03]

The theory is that you can do that but the gate would need a lightish spring so that it acted as a bypass and a pressure relief valve . It would take a bit more juggling to control the waste gate so that you got sufficient boost higher up the rev range .

The engine probably doesn't care which way the exhaust gets out ie turbine outlet or waste gate path , but with a smaller AR turbine housing the waste gate needs to start opening at the point where exhaust manifold pressure starts to creep up on inlet manifold pressure to keep the system in regulation .

I always reckoned that a 0.73 AR turbine housing would be a better compromise for some people with RB25s but only HKS ever made them and in T2/25 mount flange . If you went external gate and made a T3 to T2/25 adapter you may be able to fit it on a stock manifold RB25 with the gate off the housing . A lot of stuffing around .

A .