BLUEHATCH

I'm about to buy a turbo that will go onto a D16Z6 with vitara pistons and TT rods... and I'm just wondering about the limits of the turbo, as far as when would it max out since it's a .48 exhaust side and what would be the difference in stage 1 and 3 on the exhaust wheel?
Here are the specs on the turbo:
GARRETT T3/T4 E .60 COMPRESSOR HOUSING .48 EXHAUST STAGE 1

COMPRESSOR HOUSING - .60 A/R 3'' INLET 2'' OUTLET

COMPRESSOR WHEEL - 57MM (2.230'' INDUCER 2.950''''EXDUCER)

CARTRIDGE - OIL COOLED

EXHAUST HOUSING - T3 .48 A/R EXHAUST HOUSING STAGE 1 , 5 BOLT

0b00st0

The stage 1 turbine wheel will hold that turbo back big time. Good compressor, just get the tubine in stage 3. It will flow significantely more.

The 0.48A/R will be fine with the stage 3.

Tom-Guy

Yes sir, stage three turbine wheel FTW. It's much bigger, and you'll spool at 3000 with 10 psi by 3500, give or take based on manifold design and a couple other factors.

BLUEHATCH

So what would be better? stage 3 .48 or stage1 .63 or how about .63 stage 3 or would the last one be too laggy

Tom-Guy

What part of stage 3 turbine don't you understand?

miro_gt

you'll max that out at about 325WHP (350 if you're lucky) due to the small exhaust housing

Slo_crx1

Most I've ever seen out of a .48 stage 1 hot side was around the 315 mark.

BLUEHATCH

So is it possible to get around 400hp with the stage 3 .48 turbine?

0b00st0

It's gonna take more boost than the 0.63A/R because of the increased backpressure, but you should be able to. Don't expect some drawn out torque curve though.

ZexRex2

we need to get some java apps that calculate all this stuff on the site. if someone has cokry's book and can post some useful formulas for real world applications than I can put them into a javascript or a java applet, which ever jeff prefers. I know this stuff is calculate-able i just don't have the formulas at hand.