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Old 04-22-2011, 07:15 AM
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dlampe dlampe is offline
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Join Date: May 2004
Location: centralia, IL
Cobra Make, Engine: B&B cobra (sold), Hurricane HMS1002 (sold), Kirkham 289 FIA, (sold) RCR GT 40(sold) SPF GT40 2122(sold) Hurricane HMS2002, (sold) RCR SLC (sold) GTR on the way!
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I thought about that but they act as a check valve and I wasn't sure what effect closing them off would have had.

I went to the track for some testing and it was running rich, actually fouling plugs. I was running a 150 air corrector with a 165 main. I am going to try a 155 or a 160 main. I think that will fix the rich effect.

What was very interesting is that I had 2 spark plugs, 3 and 6, that where dangerously lean at the same time, I fouled 4 and 8. I initially thought that I had debris in the passage ways, choking the fuel supply. After some inspecting, I think it is a result of the hood scoop. It dumps air right into 2,3,6 and 7. I was running the float about a millimeter low on 3 and 6 to correct a casting difference between Spanish and Italian carbs. My guess is that if I put a baffle in the scoop like the 289 cars, this lean condition will go away. (after I re-adjust the floats)

Any thoughts on this?
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