T72 dynochart - 9psi and 15psi
 

I meant to post this dynochart for a while...
The car belongs to 1STGEN :bigthumb:

1983 RX7 FB
13B- REW street ported
550cc/1600cc injectors
HKS cast manifold
T72 hyrbid turbo ( T66/T72 turbo)
Microtech LTX8
SLIPPING CLUTCH

Tuned by Alamo Autosports in Arlington, TX

Nice, Can you post a sheet with engine RPM as well? Pics of the car too?
I Love turbo 1st gens.

Under rpm, you can see the clutch slip.
I can get some pictures next time the owner comes by.

He is getting a new clutch, so we will retune with the new clutch. He also has exhaust leaks, and we tuned for 10.8 afr, but it felt like 10.0.
So with the new exhaust gaskets, a bit less split, and a bit leaner afr, we are hoping for 470whp at 1bar boost :)

Impressive. Keep up the good work!

B

Explain what you mean by t66/t72, all of the t series turbos have the same selectin of turbines/housings/chra's. You choose the compressor side to go with them.

-Marques

Wow, how you got the 550 / 1600 combination to support that kinda power?
Stock FPR?
Are you running higher fuel rail pressures than stock?


-Ted

The car has an Aeromotive fpr and fuel pump.
550/1600c is ok, but I am pretty sure they are borderline.

All I know is that the turbo came off a truck, and the owner thought it is a T72. He just had it rebuild by Majestic, and they told him that it is not a T72, but some kinda hybrid with T66 parts etc.

at is impressive for 9spi!!! damn you and your standalone!

something i never really understood, why cant the stock turbo do that......

Inneficient at high boost, can't flow enough air...Simple as that.

ah. thats damn impressive still though. has to be some good tuning involved

Actually the car is tuned really conservative. The owner does not want me to push it. I suggested a C16 map, but he refused. And he wants to run 15psi on pump gas not more :(
But believe me, the car is INSANELY FAST! I have tuned many high horsepower cars ( 800-1000HP), and this rx7 can really hang with some of them. I guess the weight of 2000lbs helps to run with a 800hp Supra ( 3600+lbs).

even though that turbo is mixed parts. I was going to get a T72 instead of a T78. if i knew now what i known then I would of gone with a T72.


BTW how much power you think that 550/1600CC's can hold cause i have close to the same setup?

wow, great numbers!

On what gas is this on? The weak 91 octane that's in the Metroplex?

Right at 450-470whp

93 octane

hell yes, turbo 1st gens unite!!! :D car pics if you can get them plz hhahaa