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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 01-29-2008, 10:57 AM   #1
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Default When is this turbo good?

So i am still looking for turbo options. When is this turbine A/R actually necessary for desired power?

Its a matter if i hold onto it ($375 for a new GT turbo is too good of a deal) and save it for later project. Or if I adjust my manifold and dp around it.

At what power level with this turbo, would the A/R be useful.


Oh heres the specs off the turbo

Compressor
In: 1.83"
Ex: 2.638"
A/R: .60


Turbine
In:2.083"
Ex:1.824"
A/R: .80


Pictures
https://www.miataturbo.net/forum/sho...2&postcount=66

Specs off the Tag:
JIM025579
1901098000
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Old 01-29-2008, 11:02 AM   #2
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i wanna say it looks like a super 60, but im not sure, your pics are the suck, lol
looks like a nice unit
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Old 01-29-2008, 11:34 AM   #3
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the turbine is a tiny bit smaller than a standard T3 but the compressor wheel is larger.

would be good on a 5.0L

this would be a good time to have a turbine map. For example, the 3071, which has a 2.3" turbine and .86 A/R housing would be most efficient flowing around 23 lb/min.

you 1.6L flows about 197.88 CFM at redline or 13.67 lb/min....
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Old 01-29-2008, 11:36 AM   #4
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Quote:
Originally Posted by whaaamx5 View Post
i wanna say it looks like a super 60, but im not sure, your pics are the suck, lol
looks like a nice unit
Specs tell me it's not a T3, didn't bother looking at the pics. Specs seem like they are from a large T2 frame.
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Old 01-29-2008, 12:25 PM   #5
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So the turbine:

Is 76 trim, 53mm with a .80 A/R, the closest turbine map is going to be from the GT2860R

GT2860R: 76 trim, 53.5mm with a .86 A/R

I would say the 0.5mm difference is negliable and could be a error in measurement.
0.5 mm 0.0196850394 in
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Old 01-29-2008, 12:26 PM   #6
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So heres what were dealing with

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Old 01-29-2008, 04:51 PM   #7
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**** me. I just went through the numbers this thing is basically a GT2871
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Old 01-29-2008, 05:07 PM   #8
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or technically a 2867
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Old 01-29-2008, 05:08 PM   #9
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Quote:
Originally Posted by Braineack View Post
or technically a 2867
Yeah but for 375? **** me. Ill never get a housing.
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Old 01-29-2008, 05:10 PM   #10
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Quote:
Originally Posted by Braineack View Post
or technically a 2867
So im thinking i might spool a little faster, and since i have a slightly smaller compressor. This might be a good turbo. Time to talk to begi
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Old 01-29-2008, 05:12 PM   #11
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i mean if you could find a smaller housing....it looks like it should perform between a 2860RS and a 2871.
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Old 01-29-2008, 05:13 PM   #12
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That was supposed to be A/R
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Old 01-30-2008, 02:15 PM   #13
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Looks like im using this turbo. My gt2867... yaaayy
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Old 01-30-2008, 02:30 PM   #14
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cool! should be insteresting
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Old 01-30-2008, 02:32 PM   #15
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I hope so. Tiny motor large turbo. Shouldn't be too bad.... for $570 total i cant complain

Ill post dyno shots (hopefully in a month or 2) when i decide if i am doing water injection or I/C or both
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