PMO Carb help...dyno graph inside
 

Car is a 914-6 built by Zotz Racing...2.5, Equal Length headers, PMO carbs, Electromotive XDI (Locked at 28degrees as per Zotz) Race gas...

We are having a very hard time eliminating the lean condition in the upper rpms. Anyone have any suggestions as to what jets and emulsion tubes to run?


Right now we are running -

185 Fuel
190 Air
F16 Emulsion

and this is the result -

http://www.cgfyb.com/hosting/uploads/pmo.jpg


Thanks!

I'd call Richard Parr and PMO and discuss with him.

Fuel Pressure?

JW said F3 cause fuel mix to run very rich way up high.

SSETEK,
I have the same issues with my PMO's.
I started here:
Main Jets 150
Air Jets 180
Emulksion F11

I changed per Richard Parr to:
Main Jest 140
Air Jest 170

It didn't change anything. I run the HPV-1 ignition and was thinking about going to the XDi2, but if you are having the same issues I may hold off on that.

John

Change your air jets down to the 165-170 range.
That will raise the fuel higher into the emulsion tubes.
Get on the dyno when you do it. But you will have to just experiment to ya get it right.
We use F11 tubes aswell.
Good Luck Man ;)
http://forums.pelicanparts.com/uploa...1184779885.jpg

Don, thanks for the advice, I will see what we can do.

John, let me know if you make any changes and they help!

signing-up

PMO
 

Did Zitza dyno that engine ? we do most all of the dyno work for Zotz, If not give me some more info on your engine set up and I can help, e mail me if you like Brunsmspts@aol.com
Thanks, Mike Bruns JBRacing.com

Thanks to everyone who has offered help!

We are working with Mike Bruns, who has been great, and hopefully we can fix the issue.



I will keep you all updated.