Fordfamily63 Posted May 9, 2021 Report Posted May 9, 2021 (edited) 4mil short rod 513 66mm pistons stock cylinders 4mil 19cc dimes squish is 44 thousandths compression was 205 each cylinder . Now the fun Distorted piston after plug center came out BR7ES .30 gap . 35mm air strikers 160 main 48 pilots center on needle . C16 fuel 40-1 Elevation between 2000ft an 3000ft different 1/8 miles . So I need help new piston an dome on the way . An ported to 196 on a deg wheel maybe 10 passes . Edited May 9, 2021 by Fordfamily63 Forgot run time Quote
SKEETER Posted May 10, 2021 Report Posted May 10, 2021 Maybe your best bet is sending to someone with a clue to get it set up correctly. Like trick racing. Quote
seansy007 Posted May 10, 2021 Report Posted May 10, 2021 sounds like it was detonating if the sparkplug came apart. why are you running a br7? should be running a br8 or even a 9 on that setup. any detonation on the other piston? Quote
Fordfamily63 Posted May 28, 2021 Author Report Posted May 28, 2021 No on voitos an in Tennessee it was still cold an had jets right so I thought now it’s 100 over 1/8th start an stop that’s it what is max on compression I can go I raised base gasket up 4 thousandths have not set cylinders on yet Quote
Fordfamily63 Posted May 28, 2021 Author Report Posted May 28, 2021 An skeeter had a stock crank 80 over 170 on pump gas . 1/8th mile running 7.60s so I have a problem with fuel an jets not motor building. Quote
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