0MAperformance

So we strapped the ol' girl on the dyno to compare the Ball Bearing GT4088R .85 a/r to the new-ish Journal Bearing Precision Billet 6765 .81 a/r.

2.0L F20C
Sidewinder T4 Manifold
AEM ems
1600cc
e85
Both peak about 32psi taper to 28-29psi. Both turbos NEED bigger turbine housings!

Only thing tweaked was the fueling.



Get the ball bearing version of the 67 and it will have the Garrett covered everywhere!

Under_Pressure

Wow need to step up to the 1.xx's!! Great numbers btw.

96 GSR-T

nice comparison, how much more useable psi can you get out of the 40R? My friend just bought one for his 2.0L with the 1.06 housing, hoping my T67 with the 1.15 housing is going to **** on him.

SlowReaction

Is the 40r running a .85 divided and is the manifold designed for a divided housing?

0MAperformance

It's an undivided set-up.

turbociv910

We all know the 4088 is a diesl turbo, put it aginst the 4094!!

Good test. Great gains!

airwalk07143

nice numbers! cant wait to come up and have you tune the same turbo on my setup. cant wait to see mid 700's! what are you doing for a tranny? i think we are going with the ppg dog box for codys this spring.

96 GSR-T

ooh, well if it was divided 1.06ar I bet it would of crushed the 6765 in spool

ScorpionT

Running and undivided manifold and a divided turbo is a great way to slow spool and cause excessive heat and backpressure.

0MAperformance

It's a pretty good turbo! It still has a stock trans in it!

PPG is sooo spendy!

civic-r11

wow... i am have been looking at these billet turbo's i am really thinking about getting one.. i wish i could find a good dealer so i could get one.. but good stuff.. i love the comparing stuff.. good info from good people..

Full-Race Geoff

sorry to complain (im always glad to see testing) but thats the worst performing 4088R setup you can do, it really needs a divided manifold to work right

0MAperformance

Well we compared the divided manifold vs the undivided with the 4088r. The difference was about 12 more ft lbs tq, and 250 rpm quicker spool. However the horsepower was down by 30 up top and the power fell sooner. I blame that on the small turbine housings though.

In regards to the test, ideal or not... it's a true back to back test of the two turbos.