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Location: stuart fl
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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 -  Thanks!
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Excell Racing Boca Raton fl |
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07-18-2007, 06:12 AM
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I'd call Richard Parr and PMO and discuss with him.
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- Tyler 1988 911 Carrera Grand Prix White/Black 2015 Cayenne Diesel Black/ Luxor Beige/Black |
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07-18-2007, 07:47 AM
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Fuel Pressure?
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erik.lombard@gmail.com 1994 Lotus Esprit S4 - interesting! 84 lime green back date (LWB 911R) SOLD  RSR look hot rod, based on 75' SOLD 73 911t 3.0SC Hot rod Gulf Blue - Sold. |
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07-18-2007, 08:54 AM
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JW said F3 cause fuel mix to run very rich way up high.
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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07-18-2007, 09:02 AM
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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
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07-18-2007, 09:04 AM
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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  
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Thanks! Don Ramsay E Mail: aircooledclassicsporsche@gmail.com The father of 964 Backdating!  www.aircooledclassics.co www.facebook.com/AirCooledClassicsPorsche/ www.instagram.com/aircooledclassicsporsche/ |
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07-18-2007, 09:31 AM
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Don, thanks for the advice, I will see what we can do.
John, let me know if you make any changes and they help!
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Excell Racing Boca Raton fl |
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07-19-2007, 05:05 AM
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signing-up
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Jon |
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07-19-2007, 06:54 AM
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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
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The two most useless things to a driver are the braking distance behind you and nine-tenths of a second ago. |
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07-19-2007, 07:52 AM
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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.
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Excell Racing Boca Raton fl |
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07-27-2007, 04:53 AM
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1984 Porsche 911 3.2
2024 
