Loki047

iTrader: (6)

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

Zabac

iTrader: (39)

i wanna say it looks like a super 60, but im not sure, your pics are the suck, lol
looks like a nice unit

Braineack

iTrader: (62)

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....

Arkmage

iTrader: (3)

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.

Loki047

iTrader: (6)

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

Loki047

iTrader: (6)

So heres what were dealing with

Loki047

iTrader: (6)

**** me. I just went through the numbers this thing is basically a GT2871

Braineack

iTrader: (62)

or technically a 2867

Loki047

iTrader: (6)

Yeah but for 375? **** me. Ill never get a housing.

Loki047

iTrader: (6)

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

Braineack

iTrader: (62)

i mean if you could find a smaller housing....it looks like it should perform between a 2860RS and a 2871.

Loki047

iTrader: (6)

That was supposed to be A/R

Loki047

iTrader: (6)

Looks like im using this turbo. My gt2867... yaaayy

Braineack

iTrader: (62)

cool! should be insteresting

Loki047

iTrader: (6)

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