Hello-

After putting about 7 flights on my H9 J-3 Cub PNP, a member of our local club recommended that I fuel proof the firewall with some epoxy 30 and 90 percent alcohol. Because I have flown the plane without the cowl in order to adjust the engine, a small amount of fuel has already found its way onto the firewall. Our club member recommended the following:

1. clean off the fuel on the firewall using 90 percent alcohol and let it dry
2. once the alcohol dries, mix epoxy 30 and 90 percent alcohol and apply a thin coat to the firewall


Does this sound about right?

Thanks!
Bjfrankl