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Which Big Single! R32 Gtr

SRB

By SRB,
in Engines & Forced Induction

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SRB

Posted
Posted

muchly asked question no doubt but i cant find much on it. ive been told my gtr is still a while away from being completed, so ive decided to do a gradual build up. the car has everything but turbo/s. i was jus gonna stick some 2530s on it, which my sale of them fell thru!! but now decided i wanna go the big single with alot of power. what im looking for is around 600-650hp at wheels. as per usual, minimal lag is wanted. my engine is fully built, but im yet to get the exact specifications of my cams etc as the guy who built it is away till after new year. it used to run twin gt28's n made 340kw at wheels, but i didnt get turbos with the car. the car is running a motec m800 ecu, which will be tuned by either CRD or CV Performance. CV played part in tuning my brothers torana, which featured in this months street machine aka MR MAD. any help is muchly appreciated.

thnak you, novak.

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discopotato03 Grand Master

discopotato03

Posted
Posted

Housings , the Garrett marketed edition uses garden variety TO4 P trim turbine housings in a variety of single/twin entry T3 or T4 flange patterns . I think there is a choise of TO4S compressor housings or an "R" ? housing still researching that one .

The HKS edition uses a unique turbine housing in twin entry T4 flange pattern , it is not a true split pulse housing because the divider only goes in a short way .

The compressor cover is a huge thing with a 70mm outlet rather than the usual TO4S housings 60mm outlet . It has a fancy drilled port shroud fitting on the front as well .

There are some people in Perth using them who say that the compressor wheel (TO4R) is not prone to surge and non port shrouded covers work well .

Just to throw some variety into the mix Full Race in the US offer the same compressor with the GT35 turbine (GT3567R) which is a recent development and looks good so far . This turbine is a little smaller than a TO4 P trim and possibly lighter for approx the same exhaust gas flow rate . For the propeller heads the GT35 turbine is a 68mm 84 trim , TO4 P trim is a 74.2mm 76 trim .

I also found mention of a GT4067R which is the GT40 turbine with the TO4R compressor . For some reason the Americans call a compressor by its inlet diameter ie TO4R is 84.2 x 66.7 so it gets called 67 ?

Cheers A .

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