Dynoed the car again (at a dynojet) and I'm VERY pleased with the results!

[MarkEmark]

Some of you may remember that a while back I took the car to a Mustang Dyno with my old T3 super 60 turbo. A/Fs were high 11's, boost peaked at 15 psi, then settled down to about 14 psi.

Anyhow, I only made 283 rwhp/309 rwtq. I know that mustang dynos run about 10 % low though so I wasn't THAT pissed off.

Anyway, I upgraded to a Turbo240/Garrett GT32 turbo, and decided to take it to a traditional dynojet, which is what everyone else uses to measure whp.

At 16.5 psi, A/Fs in the high 11's, I made 343 rwhp, 310 rwtq (interesting how the larger turbo completely reversed the powerband). The torque curve is as flat as a preteen girl. LOTS of useable power.



Compare this to the torque curve that fell flat on its face with the old T3 super 60:



I have a few videos with sound too...i'll probably host them on streetfire.net, although that site seems to take forever to upload them...

For a modification list, go here:

http://www.angelfire.com/thefo....html

Anyhow, just thought I'd give an update!

[PapaSmurf2k3]

congratz man! does the car feel a lot better? your torque stayed just about the same

[MarkEmark]

congratz man! does the car feel a lot better? your torque stayed just about the same

Car feels a lot faster than it did before...torque stayed the same, but you need to look at the torque curve...with the old turbo the torque peaked and drastically decrased....on the new turbo, the curve is pretty much flat from 3500-6000 rpm, which is exactly the rev-range one is in for daily driving.

Also, I uploaded 2 vids:

First one is me just doing a ricer fly-by from 2nd gear on:

http://www.youtube.com/watch?v=3UL6W1O_W0A

Second one is at the dyno (that's not me doing the pulls), but unfortunately it cuts out soon (no idea why!)

http://www.youtube.com/watch?v=Nn2qOgizBC0

[Bosrudorfer]

Very nice!

[hannibal]

Congrats Marc. I didnt realize you had picked up the GT32. Real nice torque curve!

Now please, relax and enjoy the car. Its perfect man!

[GEO]

bastard, makes me want to get a built engine.

[j-z]

thats awesome! that torque curve looks NASTY for a road course. are you still running an internal wastegate? also, whats the differences between a gt32 and the standard t3/t4 .63 a/r 50 trim? just wondering cause i never really checked up on the gt32, but i see everyone poping up using one and hearing good results about them.

[klattr1]

sweet job...I knew you would like the AMS/Turbo240 GT32... You should be happy for a long while now

powerband is nice...is your boost creeping towards redline some?

[crzycav86]

nice numbers.

[S14tat]

wow when did you spend all that extra on making the setup like that? well i'm glad that you were able to make what you were expecting to make.

[virus77]

glad to see its finally working out for you man

[Jookmasta]

im also curious as to how the internal wastegate thing is going? did u have to make a new DP or were u lucky enough to be able to use back the old one. also congrats on them numbers as now them numbers are matching the amount you spent ALOT better.

[MarkEmark]

thats awesome! that torque curve looks NASTY for a road course. are you still running an internal wastegate? also, whats the differences between a gt32 and the standard t3/t4 .63 a/r 50 trim? just wondering cause i never really checked up on the gt32, but i see everyone poping up using one and hearing good results about them.

Yep, still running an internal wastegate, and it's surprisingly very accurate..boost doesn't fluctuate more than 1 psi overall. I didn't need to change anything when swapping to the GT32 turbo except a different coupler for the inlet (GT32 inlet is 3" vs. the t3's 2.5"). That, and a custom wastegate bracket. Everyone always says that external wastegates are the best and most efficient, but I've been running one since the car was first turbocharged and it works fine for me...it's a lot less complicated to make the downpipe, and also cheaper (don't need a tial wastegate, don't need the tubing/flanges to plumb it back into the downpipe). Also don't forget that pretty much every OEM turbo car uses internal wastegates...

As for boost creep, it does seem to go up a little bit past 5500 rpm (negligible in my mind), but not more than 1 psi from when peak boost is achieved. I think the creeping is due to the fact that at that pressure (16.5 psi), and that rpm (5500+), the tiny internal wastegate hole is overwhelmed by the amount of air flowing through the turbo and causes the pressure to build up a little bit while the other air is discharged into the downpipe, ie, a larger diameter hole would prevent this because the air could escape without building extra pressure. I know this is the case because with my T3 super 60, the wastegate actuator rod actually broke (weird), so the flapper valve on the discharge side of the turbine was always open, and full throttle my boost gauge still read 4-5 psi...

An internal wastegate probably wouldn't be the best idea at boost levels higher than what I'm running, but it works damn well for me...I think I'm the only high HP KA who still uses an internal gate too.

Not really sure about the differences between the GT32 and the venerable T3/T4 hybrid that everyone uses...I'm sure the hybrid works plenty well. GT32 obviously has a different (larger?) compressor. Plus, a GT32 turbo sounds more hardcore than the ubiquitous T3/T4.

[Jookmasta]

u wouldnt mind posting before and after pics of the engine bay would ya? i also plan on upgrading to that turbo down the road with an internal wastegate as i am also running an internal wastegate...........

[MarkEmark]

u wouldnt mind posting before and after pics of the engine bay would ya? i also plan on upgrading to that turbo down the road with an internal wastegate as i am also running an internal wastegate...........

Before and after what? The engine bay has looked the same for the last year besides the larger turbo and turbo blanket....?

[Jookmasta]

oh ok. i was just wondering if the larger turbo presented any clearance issues but if everything bolts up right i guess it would all just look the same with the blanket covering it up.

[Florida240sx]

Nice. I plan for the same #'s. Running the IAP kit.