Full race t4 twin scroll install advice
^ this...a 40R on a daily driver at 500hp is going to kinda suck to drive around. I would get a smaller turbo
You can just run an open scroll 30R, that imo would be a blast on the street. I am not sure if there is a readily available twinscroll Garrett hotside for the 30R
Last edited by awhit17; May 10, 2015 at 07:00 PM.
Given a choice between a GT30R with open housing vs. a GT4088R twinscroll T4, take the GT4088R TS T4 every time.
With a decent cam set (e.g. GSC S2) and enough fuel, this setup will easily deliver the OP's goal of 500whp on pump fuel with supporting hardware and good tuning.
It may seem that way in principle, but it is a disappointment in practice. A GT30R with open housing gives comparable lag to a GT35R, but with less power.
Given a choice between a GT30R with open housing vs. a GT4088R twinscroll T4, take the GT4088R TS T4 every time.
With a decent cam set (e.g. GSC S2) and enough fuel, this setup will easily deliver the OP's goal of 500whp on pump fuel with supporting hardware and good tuning.
Given a choice between a GT30R with open housing vs. a GT4088R twinscroll T4, take the GT4088R TS T4 every time.
With a decent cam set (e.g. GSC S2) and enough fuel, this setup will easily deliver the OP's goal of 500whp on pump fuel with supporting hardware and good tuning.
Again, sorry for the misleading advice!
In this instance, even if we put the benefit of the twinscroll effect aside, the difference where either setup crosses 200whp is small as compared to the 150whp or so advantage of the GT4088R. Of these two, one will comfortably put the 500whp pump fuel target within reach of the OP's setup. And as for Full Race's TS T4 GT4088R kit, Geoff did his homework. One of the reasons why it is responsive is not just the TS factor, but Full Race's TS manifold design.
I disagree Drifto's TS gt30 setup would prove that in spades. Years after the gt30 came out is when TS began to be offered in the aftermarket. Then again to this day Buschur still does not sell anything TS.
That hasn't been the case in EVO-world, which is one big reason why neither the GT3071R nor GT30R were ever popular options here, not even in earlier days - too much lag for the power. I recall David Buschur loudly venting his spleen in this forum several years ago concerning the GT30R, which was amusing but true. FP's HTA30R is a different story, but that's venturing off topic.
In this instance, even if we put the benefit of the twinscroll effect aside, the difference where either setup crosses 200whp is small as compared to the 150whp or so advantage of the GT4088R. Of these two, one will comfortably put the 500whp pump fuel target within reach of the OP's setup. And as for Full Race's TS T4 GT4088R kit, Geoff did his homework. One of the reasons why it is responsive is not just the TS factor, but Full Race's TS manifold design.
In this instance, even if we put the benefit of the twinscroll effect aside, the difference where either setup crosses 200whp is small as compared to the 150whp or so advantage of the GT4088R. Of these two, one will comfortably put the 500whp pump fuel target within reach of the OP's setup. And as for Full Race's TS T4 GT4088R kit, Geoff did his homework. One of the reasons why it is responsive is not just the TS factor, but Full Race's TS manifold design.
Drifto's car, which I know well and have personally driven on numerous occasions, was fitted with a Forced Performance HTA30R, 1.06 A/R TS T3, and was run on E85. This is not the same thing as a regular GT30R with open T3 running on pump fuel.
FYI
FYI
