What makes a marine dist USCG approved where an automotive distributor is not? I tried doing a search and all I could come up with is a lot of arm waving and confusion on how a distributor works. I'm not advocating the installation of an automotive distributor on a marine application, I would just like to know what the actual difference is between say a 70's style points marine distributor and a comparable automotive distributor. Basically the only thing I can think of would be a non-vented cap with a rubber seal at the bottom. There must be more to it..?
