kingleh

yeah these motors love hi flowing exhuast... or just strate pipes

kingleh

ok man your freeking me out.... im uploading dyno graphs of the 997 Vrs a GT3 RS without restrictors right now... plus almost compaired a world challange motor in a cup car Vrs the 997 also.. but didnt do that one...

kingleh

ok

here is the dyno sheet





here is the 997 cup car Vrs the 3RS









here is the one you wanna see... a brand new 05 996 motor Vrs the brand new 997 cup motor.....







just for fun here is my Boss's Supra Vrs the 997 cup







and here is a gt3 street Vrs the 997 cup

kingleh

also.. chek out that first graph done with mph...... pull was done in 4th gear and at 8300rpms fuel cut hit... rear tires moving 109mph... in 4th.... hmmm i smell short gears...!

BBailey

Not a clue Mark. Maybe Adam or Cory from Autometrics will chime in, or Leh if he knows. I don't even know if they dyno'd the '05 3.6L that we put in halfway through last season after we got it into the car.

I will say the '05 3.6L we put in felt substantially stronger than the 40k mile 3.4L we took out even carrying an extra 50 lbs of ballast at Barber.

__________________
Brian Bailey
Autometrics Motorsports Porsche 996 - Grand-Am Cup #45
'87 Porsche 944 Turbo - PCA GT3s

mark kibort

Thanks Leh, Ive heard and now we SEE!!

funny, all that V8 talk about flat torque curves. that cup car curve looks like a table. doesnt get much better than that! (except more!!)

be interesting to see the GS Grand Am cup 996 dynos. I bet they got to be in the 300 rear wheel hp range.

Mk

Eyal 951

saw you on HT, again, enjoy it!
Eyal

Bill935K3

AWWW heck we can make that kind of power with one turbo tied behind our back.
My old CIS 3.4 with twin PMS K-24s
NICE CAR Leah!! The best of luck with it

kingleh

haha


take all your turbos off and see what happens!!!

MJR911

Leh, whos shop is that?

analogmike

Wow that 997 GT3 cup sure is strong up top! As I guessed, it's no better (actually worse) than the 996 below 7K. The 6100 RPM torque dip is still there, even worse. I wonder how they got the top end stronger, better exhaust? Mine gets too lean at higher RPMS, tried a few tweeks on the dyno but the ECU leaned it back out... I guess it's a spec car so will have to live with it.

coryf

That is the shop Leh works for, GSC motorsports. They sell and work on japanese performance cars like the evo, sti, supra ect.... It is half a block from Autometrics in Charleston SC

Glen

Mike, easy to fix, You need to bump up the fuel pressure slightly so the per pulse from injecor is a bit higher and You can get the A/F ratio You need. Rick Deman can take care of it.

My car is early,(short rod) non gutted cats, early exhaust and no crankcase vent valve. When we run the gutted cats it climbs to about 344 rwhp from the 335. With the center exit late exhaust it is around 345. When You do the crankcase vent on an early car it is good for another 5-8 hp. Those are very real adjusted figures with no fluff at all in them. Same scenario the 03-05 long rod motor puts out about 360 rwhp. The 00 was rated at 360 at the crank and the 03-05 was 390 rated at the crank. Looking at a 15% driveline loss and You can see the factory is a bit conservative on their ratings.

Jarez Mifkin

Glen, how have you been?

What are the torque numbers for 03-05 Cups?
While we're on torque numbers, what are they for the 3RS?
What's the weight difference between the 3RS, 996Cup, and the 997 Cup?

Adam@Autometrics

The GT3 Cup has been right around 255-260 ftlbs at the wheels since '02. Torque peaks later on the later cars, thus the increased hp.

996 and 997 Cup (without PCCB) have published weight of 1150kg (2533 lbs) dry. PCCB is good for another 45lbs.
An RS will be around 2450 lbs.