Dyno run sheet - ZR-1 Net Registry Forums

-=Jeff=- · 06-18-2008

Quote:

Originally Posted by Aurora40

Yup, the Buick V6 had it before the 'vette ever did. But what I meant was most (none?) of the Chevy V8's never had it. I'd guess there are a lot more Chevy smallblocks out there than turbo'd Buick 6's.

True,

but for Dyno's the GN V6 is another popular motor to dyno...

also the TTA from 89

XfireZ51 · 06-19-2008

4 dynos I've been to all had a problem picking up rpm from a plug wire. You're better off using a low inductance pickup on one of the pink wires at the back of the motor and under the MAP sensor.

LGAFF · 06-19-2008

http://i134.photobucket.com/albums/q...aff/AFdyno.jpg

Here are my AF ratios on the car, ignore the blue line, the sensor fell out of the tailpipe at the end of the run, however you can see that the fuel curve leans after what would be 5100rpm which might explain my 6100-6300rpmmax power band vs the 6800 that Dominic saw.

I am sure Dominic can chime in to be more specific, but he was nice enough to check my DRM chip it is running 12% leaner than his tune at max hp, and fall off begins about 5000rpm.

LGAFF
92 ZR1
#234

XfireZ51 · 06-19-2008

I compared Lgaff's High RPM Open VE table to mine. Beginning at 5000 rpm, his VE is lower than mine by 7% and by 12% at 7000rpm.

jonszr1 · 06-19-2008

wow, you are lean , is dominic going to add more fuel for you. O would be very carefull till he or someone does . my car was like that till corey added more fuel and took out 1-2 deg of timing up top. the reason for the timing was californias wonderfull 91 oct fuel and special adiitives .id bet you would go over 400 whp easy with the right fuel curve.it shows you did a very nice job on the porting

06-19-2008	#3
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: Dyno run sheet http://i134.photobucket.com/albums/q...aff/AFdyno.jpg Here are my AF ratios on the car, ignore the blue line, the sensor fell out of the tailpipe at the end of the run, however you can see that the fuel curve leans after what would be 5100rpm which might explain my 6100-6300rpmmax power band vs the 6800 that Dominic saw. I am sure Dominic can chime in to be more specific, but he was nice enough to check my DRM chip it is running 12% leaner than his tune at max hp, and fall off begins about 5000rpm. LGAFF 92 ZR1 #234 Last edited by LGAFF; 06-19-2008 at 10:27 PM.

06-19-2008	#4
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: Dyno run sheet I compared Lgaff's High RPM Open VE table to mine. Beginning at 5000 rpm, his VE is lower than mine by 7% and by 12% at 7000rpm.

06-19-2008	#5
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,406	Re: Dyno run sheet wow, you are lean , is dominic going to add more fuel for you. O would be very carefull till he or someone does . my car was like that till corey added more fuel and took out 1-2 deg of timing up top. the reason for the timing was californias wonderfull 91 oct fuel and special adiitives .id bet you would go over 400 whp easy with the right fuel curve.it shows you did a very nice job on the porting

06-19-2008	#2
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: Dyno run sheet 4 dynos I've been to all had a problem picking up rpm from a plug wire. You're better off using a low inductance pickup on one of the pink wires at the back of the motor and under the MAP sensor.