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New Things On The Way From Garrett .

discopotato03

By discopotato03,
in Engines & Forced Induction

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discopotato03 Grand Master

discopotato03

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Hi all , if you become a Garrett Gearhead (apply at their turbobygarrett site) you get tech updates from time to time .

In the pipe as they say .

Briefly they say that people are getting stuck between the choice of GT3582R or GT4088R , they say people want the response of the GT3582R with the power of the GT4088R .

Their answer is to use a GT37 turbine in a GT4088R making it a GT3788R , they mention that it will be available in three turbine housing sizes and my guess is they will use three of the four castings normally used on a GT4088R ie 0.85/0.95 1.06 and I think 1.12 . Fingers crossed the turbine will be a petrol spec (high temp material) UHP (Ultra High Pressure Ratio

version because this will span the gap between the GT35 UHP turbine and the GT40 UHP one . I can see it making the old T4 P trim turbine redundant (ie T04Z turbine) if they do .

The burning question will be what trim this turbine will have , fingers crossed it will be 78 trim like the GT40 UHP turbine and not 84T like GT30/35 plain bearing GT40/GT42 etc .

They mentioned that the power range (IMO depending on turbine housuing A/R) is 440 to 675 - which is really GT3076R to a bit above what single scroll GT3582R territory .

I think all these housings are twin scroll T4 flanged - perfect for those HKS low cast RB26 exhaust manifolds .

The second turbo to rate a mention is their GT3582R , in their wisdom they have decided to make available port shrouded compressor housings and a few more turbine housing options . Port shrouded comp housings let you get away with smaller A/R turbine housings without surge . Note HKS do it to 2835 Pro S turbos and RB spec GTRS's (GT2871R 52T) .

They look like making the GT35R T3 flanged housings with V band outlets and a T4 flanged version with a four bolt outlet . They don't specifically mention single or twin scroll with these but the info will get out in short order if the turbo spies around the world have their way .

The Evo Lancer crowd look like getting bolt on versions of the GT3071R and GT3076R , I reckon to make them work they'd have to be reverse rotation . Fingers crossed Garrett will continue on with the twin scroll twin flap valve gates like the factory reverse rotation Mitsubishi turbos have . From memory Evos 4 to 10 have them and the only single scroll ones will be the pov pac Ralli Art Lancer to be released soon - to compete with non STi Ram Raiders .

No idea when , cheers A .

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discopotato03 Grand Master

discopotato03

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I guess it would depend on who supplied it and if they cut costs by not using a genuine Garrett GT35 turbine housing .

I think one mob in the States may have been machining the "ears" off Garrett housings to form a V band flange .

Also you see them on US sites with what looks like T3 flanged TB31 turbine housings on them .

I would always prefer a Garrett housing designed for the turbine size and family used .

A .

Cartman Rising Star

Cartman

Posted
Posted
I guess it would depend on who supplied it and if they cut costs by not using a genuine Garrett GT35 turbine housing .

I think one mob in the States may have been machining the "ears" off Garrett housings to form a V band flange .

Also you see them on US sites with what looks like T3 flanged TB31 turbine housings on them .

I would always prefer a Garrett housing designed for the turbine size and family used .

A .

its a genuine garrett housing, came from MTQ

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