DIY Turbo Discussion greddy on a 1.8? homebrew kit?
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which chinacharger, of these two?

 
Old 06-13-2010, 11:02 AM
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Default 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?
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Old 06-13-2010, 11:13 AM
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they are more or less the same same. think GT3071 size.
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Old 06-13-2010, 11:19 AM
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Thats overkill for my goal isn't it?
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Old 06-13-2010, 11:20 AM
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a bit.
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Old 06-13-2010, 11:24 AM
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I want something between that, and what you have brain. What Garret turbo would that compare to?
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Old 06-13-2010, 02:19 PM
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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.
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Old 06-13-2010, 02:37 PM
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well unless someone else has some input, i'm going to go with #1
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Old 06-13-2010, 03:03 PM
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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.
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Old 06-13-2010, 03:24 PM
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Originally Posted by Braineack View Post
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
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Old 06-13-2010, 03:43 PM
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Not to derail, but is it bad that these are not water cooled? For a track car I'm guessing probably.
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Old 06-14-2010, 09:12 AM
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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?
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Old 06-14-2010, 10:09 AM
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Originally Posted by Braineack View Post
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.
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Old 06-14-2010, 08:51 PM
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Originally Posted by Braineack View Post
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.
http://cgi.ebay.com/ebaymotors/GODSP...item255b28bde2


????????
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Old 06-14-2010, 09:48 PM
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Originally Posted by Cococarbine3 View Post
Not to derail, but is it bad that these are not water cooled? For a track car I'm guessing probably.
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.
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Old 06-15-2010, 01:09 PM
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Last edited by RyanLewo; 06-15-2010 at 01:15 PM. Reason: Fail.
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Old 06-15-2010, 01:38 PM
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that's the turbo im running. It's a 250rwhp turbo at best.
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Old 06-15-2010, 01:45 PM
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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).
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Old 06-15-2010, 01:48 PM
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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.
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Old 06-15-2010, 01:58 PM
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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.
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Old 06-15-2010, 02:15 PM
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more boost was the answer. ill add a lb or two after 5.5K
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