Miata Turbo Forum - Boost cars, acquire cats. - Opinions on upgrading compressor side of turbo?

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- - Opinions on upgrading compressor side of turbo? (https://www.miataturbo.net/diy-turbo-discussion-14/opinions-upgrading-compressor-side-turbo-65438/)

Quote:

Originally Posted by Faeflora (Post 870143)

Would need to be rebalanced. Fail

lol.

:brain:

Quote:

Originally Posted by thirdgen (Post 870140)

The wheel gets upgraded from a 56mm diameter wheel to a 60mm diameter wheel, with a said gain of 15whp? Doesn't seem at all worth it to me to upgrade 4mm's for a mere 15whp, but what about upgrading the whole compressor with one from, say, a 2871?

You'll get more than 15whp (where did you come up with that number), and it's a significant upgrade:

https://www.miataturbo.net/attachmen...ine=1335546841

swapping to a t3 wheel (45,50,60, super 60 trim) would make your turbo a t28.

t25 + t3 = t28

but.

I'd for the prices you listed, I'd rather just buy a godspeed t28. not a 3076, or 3071, or 2871. I'm talking 2860 or 2560 sized turbo.

Quote:

Originally Posted by Faeflora (Post 870821)

OK so should I put a 5 speed in my car?

DEFINITELY

Quote:

Originally Posted by palmtree (Post 870825)

Then you sold the car, and the next dude broke it in like a week :D

a month iirc, but yeah. I never denied the fact that I babied the heck out of it when I had it. super smooth shifts, almost never any launching, just going WOT from time to time. (which is what Todd would probably be doing too).

had I money shifted it like him, I probably woulda popped it in a month too.

Quote:

Originally Posted by Braineack (Post 870828)

So how much realistic power gains should he expect from something like this, and how much lower boost would he be able to run yet achieve same peak power?
From everything I've seen on other cars, huge wheels in small housings usually require a TON of pressure to really shine.

well here's my old garrett super 60 t3 on my stock 1.6L vs a sr20 t25 on a stock 1.8L

https://www.miataturbo.net/attachmen...ine=1335547348

it can push a lot more air.

consider the last dyno I've seen of Todd's:

http://www.boostedmiata.com/gallery2/d/4675-2/todd.jpg

That dyno was when I was ms1 parallel with rx7 460's. I think I was on just under 12psi.
What boost were you running Scott? I can tell cfm's were higher cause you made a lot more torque than me.

he made less torque.

223 is less than 208?

my car was running about 13psi, and it's puny 1.6L that makes no torque. it made 201rwtq on that plot.

green is the 1.6L t3, blue was Lars's sr20. his plot looks just like yours we all dynoed on the same day.

Oh wait, I was looking at Lars, the blue line.

Quote:

Originally Posted by thirdgen (Post 870843)

223 is less than 208?

read the fine print: he is the green lines, and the blue ones are a different car.

you will lose a bit of low end torque but make power to redline.

I think just upgrading to a 2560 equvianalt bolt in chinacharger might just be the best thing for considering your stock rough and tumble motor.

Rough and tumble...That's an understatement.
160,000 miles, and 1 quart every 500 miles. That's how I roll.

Quote:

Originally Posted by Faeflora (Post 870802)

God damn it when did i start sounding so retarded?

:bowrofl:

i chuckled at that too.