Cigarette Cafe Racer prop choice
Platinum Member
04-10-2019, 11:20 AM
#12
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I have fuel pressure gauges. Both reading around 6.5psi most of the time, admittedly I did not look closely at them during my last WOT run. Next time out I'll pay closer attention and also try raising the hatch an inch or so - and read plugs after WOT run.
04-12-2019, 08:26 AM
#14
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Haven't had a chance to run it yet - but I did notice that the inside surface of the 3 vents on each side of the hatch, had 3 layers of tight plastic mesh, which couldn't have been doing anything positive for airflow into the engine room. I removed it all.
Charter Member
04-14-2019, 05:50 PM
#18
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So running yesterday, fuel pressure over 4000 rpm drops to 5 or 5.5 psi. Opening up the hatch vents did not improve top end. I forgot to try running with the hatch up.
I checked timing today, both motors set to 38 degrees initial and locked in with no advance.
I checked timing today, both motors set to 38 degrees initial and locked in with no advance.
04-15-2019, 08:40 AM
#20
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38 is where it made the most power on the dyno, and it also idles quite nicely for the size of cam. I did not see the fuel pressure drop below 5 at any time. Yesterday I pulled both pickup tubes out of the tanks and verified that there's no strainer/screens on them to clog. Pickup tubes are 3/8" i.d.
