GT2860rs vs GT3071r vs GT3582r - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 10-18-2010, 02:20 PM   #21
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My car on 8.5:1 compression with a log manifold on a GT2860rs .86, and you need to shift the RPM peak torque about 500rpm sooner. The wheel speed function on the dyno wasn't perfect.
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Originally Posted by hustler View Post
lowered static compression sucks at 12psi:

but at 15 (actually 13 and up) the glory of MBT of timing comes through from 4000-redline, and the #'s jump dramatically:

AFR:

advancing timing at 15psi did no good, lol.

my uneducated, misinformed theory:
The gt2860rs "works" and stops overboosting after 13psi.
Lowered static compression "is beneficial" after 13psi or about 220whp (dynodynamics, higher on a dynojet).
After 16psi this turbo started to run out of gas. With a tubular manifold, its a different game and it makes the same numbers at 12psi but hits 16psi at 3400rpm.
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Old 10-18-2010, 02:36 PM   #22
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Originally Posted by Zabac View Post
Du musst sprechen mit MUSANOVIC, er spricht Deutch sehr gut.
Er hat ein Borg Warner s252 fur seine NB, macht 270 mit nur 12-13psi.
Der Borg Warner is nur $450 neu...
Scheisse! Das ist nicht teuer. Warum habe ich nicht gewusst?

Edit: Where did he find it that cheap?

Last edited by sixshooter; 10-18-2010 at 04:48 PM.
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Old 10-19-2010, 08:35 PM   #23
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first thanks for all,

who can tell me what Big Throttle Body(65 or 70mm) it fit Plag and Play? good would be one with idle Screw. variable TPS would also be great.
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Old 10-19-2010, 08:45 PM   #24
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Originally Posted by faeflora View Post

I also saw an ad in Modified for a GT-X GT3071. It's not on the website now but I would wait for that vs a regular 3071.
Not new news. Different wheel design, like an 11-blade compressor wheel like my Duramax has or something. 10% more flow for the same spoolup. Have they actually announced a GTX30R yet? I thought it was only available in a 40 or a 42 and up.
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Old 10-19-2010, 08:46 PM   #25
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Quote:
Originally Posted by CDFreak View Post
first thanks for all,

who can tell me what Big Throttle Body(65 or 70mm) it fit Plag and Play? good would be one with idle Screw. variable TPS would also be great.
Don't bother putting a big TB on the stock IM, you need to change the IM (unless you have an '02 "squaretop" manifold).
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Old 10-19-2010, 09:22 PM   #26
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Quote:
Originally Posted by Savington View Post
ave they actually announced a GTX30R yet? I thought it was only available in a 40 or a 42 and up.
Yes, GT30X and GT35X was in the ad.
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Old 10-19-2010, 09:26 PM   #27
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Don't bother putting a big TB on the stock IM, you need to change the IM (unless you have an '02 "squaretop" manifold).

The Manifold is a Begi Intake Manifold
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Old 10-19-2010, 09:42 PM   #28
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Originally Posted by CDFreak View Post
The Manifold is a Begi Intake Manifold
You have one?
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Old 10-19-2010, 09:48 PM   #29
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Originally Posted by Full_Tilt_Boogie View Post
You have one?
at the moment its on the way to germany

on this i won bolt the Big TB
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