tubine housing/exhaust restriction

[randy 77zt]

what t3 turbine housing has least amount of exhaust restriction?want to build a good turbo for a street /road couse car.dont care about huge dyno numbers.if the car make 350 hp at the wheels on pump gas and can run to the track and then run 2 hours of track time.then run home and to work.i dont spin more than about 6500 on the track.but thundehill has that 4000 ft straight and hitting turn 1 at 150 or so would really wake you up.

[Lockjaw]

The .82 has the least amount of restriction.

[jeffp]

You know, if you want to run 350Hp (ONLY) and not to much over that then I would suggest going with the first turbo I did. I was running an air research compressor (a grand national compressor housing and wheel) and a stock T3 nissan exhaust turbine wheel, I would suggest the stage 3 wheel tho. and a stock .63 exhaust turbine housing.

I was able to push about 15psi of boost with the car and it was in full boost at 2500 rpm. I think that would do very well for your application.

I also think that once you get to that power level you are going to want more LOL

That would be my recommendation, good spool, good topend, and not really radical power to try to hold down.

[randy 77zt]

i got this turbo about a year or so ago from a sand rail supply in pheonix.its is a t3/t4 .the compressor is supposed to be a 60-1.the turbine housing that came with the turbo is a .63 with no waste gate.the oem nissan turbine housing bolted on.i was thinking about sending the oem nissan housing and the turbo out and have the housing machined and a stage v turbine wheel installed.the turbine housing probably came small because sand rails have lots of room for external waste gate.some of the small engines are probably running about 50% of their exhaust through waste gate under full power.