Does this seem right?

539rwhp @ 20 psi. on a 60-1 Turbo, Pump Gas..

Is that Dyno correct?

For Reference, my car did 507RWHP at 20/21 PSI and Race Gas,
and my car ran out of Turbo (My larger 63-1 turbo couldn't feed it any more)

My Dyno vid is in my sig.

 

https://www.rx7club.com/rotary-car-performance-77/539-rwhp-%40-20-psi-pump-gas-976259/

 

I was going to say the same thing as turblown, Im assuming the carb fueling made that bit of a difference. My old 302 with an t-trim vortech supercharger made another 45whp when i switched to blow thru.

 

I found this in an old thread that might explain...

 

^ a T04R... that's what it is effectively. I had a 60-1 and I currently have a T04R. They are basically the same turbo except for the compressor wheel and the machining of the compressor housing.

 

That makes a lot more sense to me. I didn't want to call BS on the posted numbers, but they were without a doubt the highest I have ever seen with the claimed turbo setup.

 

It's almost like saying you have a world record on stock twins but you actually have BNR stage 3's...

 

507 rear wheel horse power is the claim.

Typical front engine rear drive manual transmission drive line efficiency = 83%
Largest brake specific fuel consumption I have personally tuned and metered = ~0.92 (on E85) assuming same mass as typical pump fuel. Mixture was .78 lambda, ie 7.68:1 mass to mass air fuel ratio.

507rwhp = 611 brake horse power.

Using the supplied number of .92 and 7.68:1 E85 afr (equivalent to .62 bsfc and 11.5:1 petrol air fuel).

To make 611BHP using .62bsfc and .78 lambda you need to be burning 72.6 pounds per minute of air at that supplied efficiency number.

Its certainly possible to burn ~73lb/min air using a twin rotor wankel using 20+psi of boost at sea level using a T04R or T04Z.

The only way to do that figure using a 60-1 (59mm/76mm) compressor wheel would be if its pumping greater than the typical mass of Oxygen (nitrous).

 

What? 507rwhp was MY car, on a 63-1 Turbo,
Using a Haltech and a ported Cosmo RE engine. I never said E85, my dyno was on C16.

Are confusing cars?

The car one in question is claiming 539 at 20 PSI . on pump gas,
(I don't know if he means 93 octane or E85 though.) Using a blow thru Holley, on a
60-1 Turbo.

Although later it was realized that the turbo had been modified for
a larger 67-1 wheel. - With this later information, I now believe it's possible.

 

Energy is energy it does not matter what it is, only the density of the fuel, effective mixture, specific fuel consumption and how much you can combine with O2.

Yes I got the number mixed up, 539rwhp was even less believable with a 64lb/min 60-1 compressor.

 

Tell him he's dreaming !