I took the car to Tom's Dyno yesterday. Bill met us there and helped with
the set up and video. Here are a few photos:

1 Tom with my car on the dyno


2 Bill setting up the fans


3 View of the driver's side


4 Laptop with LM-1 and LMA-3 connected


We did several runs, adjusted the fuel pressure a few times and tightened the
supercharger belt to get the boost up. We saw boost levels from 12-14.5 psi,
and rwhp from 490-531.6. The dynapack seems to show about 5% less rwph
then the dynojet, so the numbers here are a little lower then what would be
expected.

Here's the results of the last two runs of the day, with the best run showing
531.6 SAE hp, and 504.6 ft-lbs torque.



Here is a 11.6 mb video, about 2 hours condensed into 3 1/2 minutes:
http://928.jorj7.com/dyno/Jorj7S4-DynoRun.wmv

Thanks to Tom and Bill for spending the time gettng this done. There's still some
tuning to do, especially in the mid-range, but the car should be ready for this season.

 

NICE....so how fast will 531whp go with your 2.20 gears????

 

Hey George

Sounds Great, can't wait to see what you can do this season with a fresh motor and additional power. Let me know if you need a hand with anything

 

Brian,

It's not just peak whp and final gear ratio, but how much whp at the rpm for a
given speed. Also, the power at sea level will not be the same as at 4-6000 feet.
But when I do the math, if I can get the same wph as in the graph at those
rpm using the same tires as I used last year, then the max speed would work
out to 216 mph. But, I don't think that will happen in reality....

 

Thanks Matt. I might need help transporting a set of wheels/tires to Bonneville
in June. I can get 2 on my roof rack, but I'll need some way to get the other
2 out there... Hopefully between you, Bill, Paul, Tim, and Rich we can work it out.

 

Outstanding!! That's hardcore power!! She sounds awesome all the way through the rpms

What was the fuel pressure at WOT?

 

Thanks Darien,

I don't know what the peak fuel pressure was (no one was watching the
gauge). I had the static pressure set between 27-28 psi, the SFMU is
set with a 7 to 1 disk, so the theoretical max fuel pressure at 14.5 psi
boost would be 129.5 psi. But with the bleed off valve set to 1/4-1/8
turn, it's hard to say what the real max was.... We were tuning off the
afr, trying to keep it around 12.5.

I didn't get the fuel pressure sensor with the LMA-3. It's still on the list of things to get.

 

That momentary slump in rpms when the throttle is tipped in seems strange- no flappie?
Sure is cool to watch it hunker down and muckle onto the dyno!

 

VERY IMPRESSIVE !

Man that sounds good. So what internal mods did you make to the motor ?

Ken

 

Time to add another shark to the top of the 951 power thread.

Great job and she sounds fantastic.

 

Internal mods? Pretty much none. He now has a squirter block, a drilled crank, earlier forged rods, stock pistons, 951 rings, Cometic head gaskets...just the basic stuff. No special Go-Fast Juice, no big bottles mounted in the back just a proper combination. Pump gas, no computer mods, no timing retard. Just about the same combination I used on the 550rwhp 89' that's been running around SLC for a couple of years. George is now running a V1-T but the street 89' is running a V7-Ysi and it still has room to grow. The V1-T is maxed out with this combination on George's car. He could use a bigger intercooler...

George, WASH THAT CAR!!!!!!

 

Yeah, but how fast could he go thru the traps if he had 1000 horsepower?

 

That's the Dynapac - it holds the car at 2500 RPM for a bit.

What did strike me as not quite right was the level off in the sound and power at about 6000 RPM. Tom said the Dynapac is doing that, but I've been there with Tom on a lot of runs on my car and others and not noticed that. You can see the peak HP at 5800 RPM. My recollection is Vortech's pull pretty much straight line beyond that. But Tom and George didn't seem to think so.

 

Dave,

It's on the list... Just have a few more things to do before I can get around to
the make it looks pretty stage.

 

Nice Job guys!! Have fun with the new HP George!!