13B Power @ 1 bar absolute pressure, to see what you might have if you MAN UP!

Barry Bordes · 01-28-2014, 01:30 PM

Hey Peter,

We are having a Global Warming snow storm in New Orleans. Go figure.
Everything is shut down so I thought I would contribute.

Probably apples and oranges as far as taking data compared to your system.
Mine from the TFX combustion testing (see attached).

My daily driver set-up:
13B-COSMO (Judge Ito street ported)
peak power @ about 7800rpm
3" exhaust 1 muffler (Racing Beat single)
Cool intake box with 9" K&N.
and either fitted with T04s or T04z both use a 1.0 A/R .
9.0:1 compression ratio and about 38 deg C charge temp.

@ 15 boost T04s 50/50 WM injection (pre turbo and post intercooler).
it made 492 bhp @ 7730 rpm

(15/14.5) = 1.034
1.034 + 1 = 2.034 bar absolute pressure
492 / 2.034 = 242 bhp
Works out to 242 bhp @ engine N/A

at 18 psi and the T04z 50/50 WM injection and optimized ignition advance it made
580bhp @ 7854 rpm engine power

(18/14.5) = 1.241
1.241 + 1 = 2.241 bar absolute pressure
580 / 2.241 = 258.8 bhp
Works out to 258.8bhp @ engine N/A

01-28-2014, 01:30 PM	#20
Barry Bordes Rotary Fanatic Join Date: Feb 2008 Location: Slidell, LA Posts: 191 Rep Power: 18	Hey Peter, We are having a Global Warming snow storm in New Orleans. Go figure. Everything is shut down so I thought I would contribute. Probably apples and oranges as far as taking data compared to your system. Mine from the TFX combustion testing (see attached). My daily driver set-up: 13B-COSMO (Judge Ito street ported) peak power @ about 7800rpm 3" exhaust 1 muffler (Racing Beat single) Cool intake box with 9" K&N. and either fitted with T04s or T04z both use a 1.0 A/R . 9.0:1 compression ratio and about 38 deg C charge temp. @ 15 boost T04s 50/50 WM injection (pre turbo and post intercooler). it made 492 bhp @ 7730 rpm (15/14.5) = 1.034 1.034 + 1 = 2.034 bar absolute pressure 492 / 2.034 = 242 bhp Works out to 242 bhp @ engine N/A at 18 psi and the T04z 50/50 WM injection and optimized ignition advance it made 580bhp @ 7854 rpm engine power (18/14.5) = 1.241 1.241 + 1 = 2.241 bar absolute pressure 580 / 2.241 = 258.8 bhp Works out to 258.8bhp @ engine N/A Last edited by Barry Bordes; 08-28-2015 at 10:05 AM.