Gt3071R Is This Bad?

[SargeRX8]

I bought a brand new gt3071r from some guy who was meant to put it on his car but ended up using something else. Anyway, by my own fault, I assumed it was a t3 gt3071r as I was under the impression all gt30 turbos(well majority) are t3. This one though is a t2.

Could I run a t2 to t3 adapter? Its a .86 rear and the front is .50 or some shit.

Cheers.

[lachlanw]

should be able to make something work if you have enough room . or get the correct flange welded on your manifold

[SargeRX8]

I think room will be fine. I just need this clarified.

Is the ONLY difference between a T2 .86 and a T3 .86 the flange? Is the housing the same size? Will the flange size be restrictive or will it open up inside the housing to allow the same flow of exhaust as a T3 just be abit tighter up front? I don't want to hit 5krpm then watch a downhill decent...

[badhairdave]

they have a different turbine. In general; cropped gt30 in the t2 housings vs uncropped gt30 in the t3 housings.

Though the .86 t2 sized housing is roughly equivalent to a .63 t3. OK for a 3071 on an rb25 though the internal waste gate size may be marginal.

[Adriano]

TBH i would have a go at selling it first, they are a bolt on for sr and ca silvias

[ezy_09s]

Yep you would be much better with the proper gt30 ...60mm uncropped wheel .

Or go with my gt3076r twin scroll i have for sale

[discopotato03]

If you can get hold of a HKS GT2835 Pro S turbine housing that suits the turbine and the manifolds flange . Probably really want the comp housing port shrouded as well .

A .

[Ruffels]

bummer dude... should have bought my gt3071r! would have been perfect if you had everything sorted

[SargeRX8]

bummer dude... should have bought my gt3071r! would have been perfect if you had everything sorted

I planned to man but it took me this long to get my cash flow and now I f**ked up

[hypergear]

What sort of T2x housing is it? got a photo? I might be able to get you a genuine Garrett housing or modify yours with a T3x flange.

[simpletool]

I was considering trying this exact turbo. Could be a cheap way to get near GTRS performance on an RB25. I would expect it would be slightly restricted by the smaller flange but it depends on your power goals. GTRS (2871) don't make all that much power anyway. A full turbine 3071 will give more top end but at the expense of response. Some would say you might as well go 3076.

[bradsm87]

The T2 GT3071R .86 has a rare 90 trim turbine wheel. U need an HKS GT2835R .73 or .87 turbine housing. It MUST be to suit the R, not the GT2835.

[discopotato03]

No they do both 84 and 90 trim turbine versions . Turbo number 700382-3 using cartridge number 700177-3 has the 84 trim turbine where unit 700382-20 with cartridge 700177-4 uses the 90 trim turbine variant .

Also all the so called HKS GT2835 variants use the T2/25/28 flange size except the Pro S ones which are T3 footprint .

I think the easiest turbine housing solution would be for Garrett to machine their GT30 IW ones to match these cropped turbines , a cropped GT30 turbine would work better in a GT30 turbine housing than GT28 ones IMO .

A .

[bradsm87]

Yeah I didn't be more specific before. The 90 trim TURBO part number is .86 but has a housing option for .64 and the TURBO part number for the 84 trim is .64 but has a .86 housing option. I assumed the turbo is just an off the shelf Garrett part. My bad.

Ah shit forgot about HKS T2 flanges