Thread: WOT too Lean
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Old 05-26-2016, 06:43 AM
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fastd fastd is offline
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Join Date: Sep 2008
Location: Austin, TX
Cobra Make, Engine: ERA FIA, 351W
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Update:
Increased PVCR from 70 to 73
Reduced the PV from 7.5 back to 4.5
Reduced the primary main to 83 from 86
Reduced secondary main from 94 to 88

Results:
WOT is much better; comes down to low 13s at WOT
BUT still spikes to mid 15s for like the first 2 seconds of WOT

Next step:
I am thinking that I could use the 50 cc accelerator pump; I have a 42 squirter in the rear now so I am thinking the 50 cc will give me a longer shot of 42

Note: Before I did the above in increase the PVCR to 73 from 70 and changed the 7.5 PV to a "High Flow" 7.5 PV; I could barely keep it running it was so rich at idle. The engine was cold so I had to feather the throttle warm it up; but the feathering caused the vacuum to drop below 7.5 so I got a rich mess. Then I took out the 73 PVCR and went back to 70s but kept the high flow PV in and still the same thing; pig rich. My point is: that high flow PV really works; it has 4 windows instead of 2 so I am guessing it was like adding an additional 6-8 jet sizes. Was surprised how much it effected me at idle though; of course I the 7.5 was too high but still...
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