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Rb20det, Vg30 Turbo, Which Size External Wastegate To Go With

fourdoorlove

By fourdoorlove,
in Engines & Forced Induction

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fourdoorlove Enthusiast

fourdoorlove

Posted
Posted

I know its not necessary to go external on this turbo and what not, i am going for pure wank factor with it... as it is a drift car and all about standing out lol

I was thinking turbosmart ultragate 38mm?

Anyone else running something different, maybe using an Rb25 turbo?

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Weld shut the internal gate, or remove it entirely (some rear housings make this possible i believe).

Then you need to attach external somewhere, be that the turbine housing or via manifold.

Basically you waste a severe amount of money for nothing, chalky we've told you to forget about it already, please take the advise on. :)

fourdoor

No bigger than a 38mm gate, hell even that might have issues controlling boost as the factory is about 20-25mm i think at a half educated guess.

The bigger you go, the more problems you have with volumes of air etc etc. See you only need to bleed of "x" air depending on how much boost you need.

If you are only needed to bleed a small amount then the gate hoevers around a slightly open/closed point, giving boost controll issues.

I would think hard about doing this on such a small turbo.

Have a good read of the external wastegate thread, linked off the FI Guide

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