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View Full Version : Turbo Upgrade Options - GT28R or GT30R


Cecil
04-06-2005, 12:05 AM
I currently have a T25 on my Hayabusa... it died.

Here's a couple of contenders for replacement Turbo's....
What are your thoughts on these two?

The GT30R has the potential to create over 500hp.
The GT28R has the potential to create over 350hp.

The GT28R will also spool quicker and be a direct bolt on... little if any modification required (hopefully).

My motor is currently stock, it may or may not remain that way in the future.
Currently, no plan exist to alter the bottom end.


Garrett GT30R Dual Ball-Bearing Turbo

Dual ball bearings allow for higher efficiency and much faster spool up.
Compressor: 76.2 mm, 56 Trim, 0.60 A/R.
Turbo Housing = 0.82 A/R or 1.06 A/R
T3 style turbine.
Supports up to 500 hp.
An excellent high-power bolt-on upgrade for any T3 turbo.
More power and less lag at a higher efficiency than a T3/T4 hybrid turbo.


or how about this one...


Garrett GT28R Dual Ball-Bearing Turbo

Dual ball bearings allow for higher efficiency and much faster spool up.
Compressor: 60 mm, 60 Trim, 0.60 A/R.
Turbine: 62 Trim, 0.64 A/R.
Comes with an internal wastagte.
T25 style housing - a perfect high power T25 or T28 upgrade turbo.
Supports up to 350 hp.


Source:

http://www.turbocalculator.com/sale-garrett-gt.php

http://www.turbocalculator.com/turbos/gar_gt30r.jpg

InsaneCivicCoupe
04-08-2005, 04:47 PM
Get a Precision GT2871R and be happy... And DO NOT buy it from Turbo Calculator...

Josiah
04-08-2005, 08:01 PM
which t25 are you using, garret or mitsu? but I reccomned the GT28R "disco potato" turbo myself....the other just seems too large really

Cecil
04-09-2005, 01:06 AM
Get a Precision GT2871R and be happy... And DO NOT buy it from Turbo Calculator...

What is this model you reference?

Who would you recommend purchasing from?

turbo-max
04-10-2005, 12:28 PM
cecil..go here and read some stuffs
http://busafied.com/phpbb2/

Alpha
04-12-2005, 02:25 PM
Cecil, like InsaneCivicSedan suggested look into a Garrett GT2871RLE. I just got one for a friend of mine with an SR20DET. It spools like his stock turbocharger but flows quite a bit more CFM :D I personally have a GT3076RLE but I wouldn't hesitate to use a GT2871RLE. If you have any questions shoot me a PM. Good luck.

Alpha
04-15-2005, 06:54 PM
You decide on this Cecil?

NChatch
04-18-2005, 05:01 PM
turbocalculator sucks ass!

Alpha
04-18-2005, 06:18 PM
Yes they do.

Cecil
04-20-2005, 12:13 AM
I have opt'ed to go with the recommendation of Velocity Racing... GT25/30R.
It's good for about 430hp at 20psi.

Hope to have it next week.