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Old 06-15-2012, 12:21 PM   #41
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Thanks for your input y8s: as the only person I know with one of these on a miata its valuable to me.

Only thing I don't get is your "random t3" comment. 2 reasons I'm running it:
1) The ETD mani I bought is t3, and I don't want to hack it up to convert to t2.
2) t3 .64 = t2 .86 iirc, which would give me more topend flow once I go past 300.
Its made by ATP btw.

You think its a bad idea to run it in that configuration?
You think your .64 hotside is the biggest reason for the decent spool despite the mammoth compressor?
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Old 06-15-2012, 12:28 PM   #42
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My manifold has a T2 flange welded on top of the T3 flange...

maybe I skimmed too much but is the T3 just the entry flange and the rest is T2 turbine sized?
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Old 06-15-2012, 12:29 PM   #43
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it's a t3 footprint .63 A/R turbine housing made for a t28 turbine.

it's the same Tom has on his 2871.

http://www.atpturbo.com/mm5/merchant...egory_Code=GTH


he's just changing the housing, not the turbine...thread title is misleading.
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Old 06-15-2012, 12:30 PM   #44
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its a bit bigger:


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Old 06-15-2012, 12:32 PM   #45
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of course it's bigger
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Old 06-15-2012, 12:39 PM   #46
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bigger = better


*edit: also updated thread title for hopefully less misleading failaidz

Last edited by 18psi; 06-15-2012 at 01:53 PM.
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Old 06-15-2012, 01:47 PM   #47
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that's what my wife is always telling me.
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Old 06-15-2012, 04:18 PM   #48
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run the goddamn t3
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Old 06-15-2012, 06:53 PM   #49
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Quote:
Originally Posted by 18psi View Post
In due time. I'm in no hurry.

Well I am dammit! MUST... SEE... DYNO PLOTZ....


Quote:
Originally Posted by Faeflora View Post
run the goddamn t3
QFT.
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Old 06-18-2012, 09:52 AM   #50
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I will
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Old 06-18-2012, 05:17 PM   #51
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What manifold was that dyno done with? I'd love sport a non VICS intake if I could find one...
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Old 06-18-2012, 05:18 PM   #52
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Quote:
Originally Posted by Der_Idiot View Post
What manifold was that dyno done with? I'd love sport a non VICS intake if I could find one...
A sheetmetal intake manifold, Idiot. Nothing stock.
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Old 06-18-2012, 07:01 PM   #53
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I may very well do one of the honda manifolds on this car even before building the engine.
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Old 09-09-2012, 09:46 PM   #54
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Ok, new hypothetical scenario for you guys to dissect:

Stock block (so 250whp max cap) for now. vvt motor. tubular mani. e85

GT2876R with the t3 housing mentioned above
GT2860RS with the t3 housing mentioned above

Which will:

1) spool quicker
2) be easier on the stock rods
3) in your opinion be the "better choice"

Now I know deductive reasoning says the 60 will spool quicker and be easier on the block, but after digging through as many dyno plots as I could get my eyes on, and reading as much as I possibly can on the subject, I'm not so sure.

1- many have blown the stock shortblock on a 2860rs in short order
2- the few that have the 76 are still on stock block
3- the plots I've seen online show about 200-300rpm worth of spool difference, IF that. Which is surprising

So what do you gays think? I picked up a 2860RS just because, and my reasoning at the time of purchase was: stock block = 2860rs, built block = 2876r. But now I'm kinda torn on whether its even worth it to re-arrange the setup later (despite not really needing much of a change, just a little hotside IC pipe and inlet pipe modification) or just stick with one or the other and sell the spare turbo.
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Old 09-09-2012, 09:56 PM   #55
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Some visual motivation:

vs

All the dyno plots I've seen show the 60 hitting around 200tq @ 3800 ish vs the 76 4100 ish
Attached Thumbnails
2876 + t3 turbine housing = 29r ?-gt28rscompress.gif   2876 + t3 turbine housing = 29r ?-gt2876r_comp_e.jpg  
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Old 09-10-2012, 01:42 PM   #56
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Quote:
Originally Posted by 18psi View Post
All the dyno plots I've seen show the 60 hitting around 200tq @ 3800 ish vs the 76 4100 ish
lol
that's all...
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Old 09-10-2012, 01:52 PM   #57
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har har har you have a superior turbo everyone elses sucks bla bla cool story bro
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Old 09-10-2012, 01:55 PM   #58
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Quote:
Originally Posted by 18psi View Post
har har har you have a superior turbo everyone elses sucks cool story bro


you're spending a truckload of money, why not spend it on a superior turbo? assuming you can wait 6 months for it to ship...
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2876 + t3 turbine housing = 29r ?-hatereagle.jpg  
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Old 09-11-2012, 02:53 AM   #59
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Quote:
Originally Posted by soviet View Post


you're spending a truckload of money, why not spend it on a superior turbo? assuming you can wait 6 months for it to ship...
Maybe sell 18psi one of your spares?
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Old 09-11-2012, 09:38 AM   #60
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Thanks, but nah.

I've considered an efr a handful of times actually. Definitely a great turbo. But even with my current 2 turbos, 2 tial wastegates, and 1 tial bov I'm still well under the price of 1 efr. And its not like I can't afford it, just don't want to spend that kinda cabbage on a turbo right now. Maybe later when there's used ones in the classifieds I'll def pick one up for the right price.

That's my thing: I'm not obsessed with having the biggest, most badass power curve on the forum and DEFINITELY not willing to spend the money it takes to get one. I am perfectly ok with what either of the turbo's I have will put out, question is which one will accomodate me BETTER? Neither will even touch an EFR in performance output, so lets just get past that already.


So back to my question....What does everyone think?
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