which chinacharger, of these two?
 

my power goal is ~250whp, but i'd obviously like a little bit of head room. maybe 275 eventually


1.
http://cgi.ebay.com/ebaymotors/t3-in...Q5fAccessories

2.http://cgi.ebay.com/ebaymotors/T3-T4...Q5fAccessories


looking at these things is giving me a headache. if neither of these is a good choice, link me to one that is?

they are more or less the same same. think GT3071 size.

Thats overkill for my goal isn't it?

a bit.

I want something between that, and what you have brain. What Garret turbo would that compare to?

If the specs for #1 are correct, it looks like it has a stg 3 sized t3 exhaust wheel, and a 57 trim compressor wheel. I don't think that it will perform the same as a 3071, but I'm pretty sure you'll hit your goals with either one.

The second one looks to be a bit smaller on the cold side, but without the exducer measurement one can't do the math. Exhaust wheel appears to be the same as the first one.

I used one similar to the second one on my FE3 and got 265hp/290ft,tq @ 15psi. That was on a stock engine with larger injectors and a TEC2.

well unless someone else has some input, i'm going to go with #1

the 3071 has a 53mm/71mm compressor. #1 turbo above has very similar size.
the 3017 has a 60mm turbine inducer. #1 turbo has a 63mm.

how is that not sized like a 3017?



no doubt you'll hit your goal with either one, but you'll be leaving tons of powerband on the table. For a 250-275rwhp goal I'd be looking for something in the 2560/2860/2871 range. or a straight 60 trim t3. a real 60 trim with a 60mm exducer, not 71mm.

looking at the numbers on garrets site, this is close to a 2860?

http://cgi.ebay.com/ebaymotors/T3-T4...Q5fAccessories

Not to derail, but is it bad that these are not water cooled? For a track car I'm guessing probably.

A genuine t3 super 60 (with a 60mm compressor wheel), with a stage I turbine, in a .48 A/R housing, is as close as you can get to a 2860. The compressor wheels are acutally identical in size but the T3 has a slightly larger turbine. This is a 300-350rwhp turbo.

A 57 trim t3/t4 is a 430-450rwhp turbo.

if you could find a 40 or 46 trim t3/t4 with a stage I turbine, that could work. What size motor you running?

A 1.8 with m tuned rods.

http://cgi.ebay.com/ebaymotors/GODSP...item255b28bde2


????????

Water cooled turbos were designed for OEM manufacturers looking for a way to reduce turbo failure from oil coking in the turbocharger. The intent is that it leaves a heat sink and the overall turbo cooler so that after a hard run and shutdown the oil doesn't break down and clog the bearing system... AS MUCH. If you run a turbo timer with a good oil it should make no difference whether its water cooled or straight oil.

This is the one I would use:

http://cgi.ebay.com/ebaymotors/GODSP...#ht_3447wt_992

that's the turbo im running. It's a 250rwhp turbo at best.

I'll have to check out your spool data/dyno run. Does it begin to run out of steam pretty badly up top? I'm shooting for 250whp at max anyways (for now).

should dyno again with it next weekend. It starts to die off a little after 5.7K in comparison to the super 60 wheel I was running, but I have a solution for that.

I'm in to hear the solution and see how that dyno run goes. I wonder if water/meth and more boost would take care of that issue.

more boost was the answer. ill add a lb or two after 5.5K :)