[ridervfr]

I have a custom ON/OFF petcock on my EX/GPZ. Turn it on when I ride, turn it off when I park the bike. I don't have a reserve tank anymore but it really does not affect the bike IMHO, I have two trip odometers which makes it a piece of cake. I store an old two stroke race bike with 100 octane gas in the bowl, it has a custom flat side carburetor on it, I turn off the gas and that is it. Every 3 months or so, I kick the bike over, usually it starts on one kick (has stuck clutch plates, but thats another story.) Have been into the carburetor a while back due to eliminating a working/winning combo in favour of trying some dry brake BMW fuel line I had kicking around - I had to remove an inline fuel filter which let some debris get into the the bowl and flooded it out. Upon inspection, I could really not find any offending debris, but I was amazed how clean the bowl was without any porosity or any other nasty surprises due to long term storage with gas in the bowl. You results may vary,

 

[ridervfr]

PRC® aerospace sealants were the first elastomeric products capable of resisting deterioration from long-term exposure to jet fuel. Since then, sealants such as PR-1422 and Pro-Seal™ 890 have become acknowl-edged industry standards for sealing fuel tanks in virtually every aircraft in the world.

This stuff stays flexible, Don't know what chance a regular "Joe" type has of procuring it. Never really thought about the tubes before. Cheers

 

[ridervfr]

other than the desire to tinker, I'm struggling to see the problem your attempting to solve. rater that directing the overflow over the side, why not try to prevent it. like a better petcock, or just shut t the thing off

FOG

A better petcock = Pingel ON/OFF with a their modified mounting plate (you have to dremel/enlarge the pee hole on the EX-GPZ 500 tank) wished I had this when I was racing these bikes. Its simple and elegant, you do have to plug a vacuum line. Easy peazy Peace