Help with my turbo numbers - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

junkilo · 07-31-2005, 02:47 AM

I've been running my numbers and calculations to turn my sohc turbo and I need some help with some basic questions.

I've got a t25 I think, although my first question is how do you tell the difference between a t25 and a t3 if both are unmarked? Whats the correlation between the two (and other turbos) in terms of a/r and trim? Does the turbo name, eg t4, t3, t66 etc, mean a specific trim, a/r and exducer/inducer size?

The compressor on mine has a 2" ID inlet, 2"OD outlet, .50 A/R, 56 trim wheel (44mm inducer, 60mm exducer).The turbine is a .63 A/R (it has a 063 stamped near the inlet base).

Am I nuts to try and get this to flow 20 lbs/min? Any wastegate suggestions? thanks

07-31-2005, 02:47 AM	#1
junkilo Leaky Injector Join Date: Apr 2005 Location: North Bay Posts: 96 Trader Rating: (0) Feedback Score: 0 reviews	Help with my turbo numbers I've been running my numbers and calculations to turn my sohc turbo and I need some help with some basic questions. I've got a t25 I think, although my first question is how do you tell the difference between a t25 and a t3 if both are unmarked? Whats the correlation between the two (and other turbos) in terms of a/r and trim? Does the turbo name, eg t4, t3, t66 etc, mean a specific trim, a/r and exducer/inducer size? The compressor on mine has a 2" ID inlet, 2"OD outlet, .50 A/R, 56 trim wheel (44mm inducer, 60mm exducer).The turbine is a .63 A/R (it has a 063 stamped near the inlet base). Am I nuts to try and get this to flow 20 lbs/min? Any wastegate suggestions? thanks