Ok, I wrapped my fuel line like scottw said with the high temp insulation tape only I wrapped only the long fuel line between the jugs and nothing else. Saturday I rode in a poker run with temps in the lower 90s with high humidity, little to no wind and two up. At each stop I just rode in and killed it. When I went to start it up no pukeing at all. Normally there would be a quart of fuel on the bike and on the ground. Not sure but I think it may have solved the problem. When it hits the upper 90s I'll know for sure but it looks good so far.
Stick,i am surprised it worked with only insualting the fuel line inbetween the cyls but am glad it did the trick in your bikes case.
I havent had any cabr puke since i insualted the enitre fuel sysem 3k miles ago including recently ridng in plenty of upper 95 deg HHH weather . Had 2 hotter days with i day @ 103 & another day @ 102 deg F HHH days ,it was brutal. But eve in those over 100 deg temps there was realy no carb
puke but i did see 2 little droplets of fuel hanging off the end of the overflow hose that never dropped off onto the pavement in the above 100 deg temps,i still call that sccuess vs puking a lot of fuel all over the place in that situation without the insualtion.
If your bike pukes fuel in the future then you can complete the job by also dbl insulating the float bowl along with 1 layer insualtion on carb body where it wont interfear with throttle calbe etc too.
But i bet in hotter temps or bad traffic when shutting it down in hotter weather bove the 90 deg HHH tmeos you had good results in it will still likely puke fuel because you didnt insulate the complete fuel system . Thats esp true without 2bl insulating the float bowl and 1 layer of insualtion on main
carb body where you can apply the insulation without interfearing with throttle cables etc on the carb which also just as important to insulate sa metal fuel ine inbetween the cyls IMHO
I just wanted to ensure i retstated i dont feel in all cases just insualting the metal fuel line inbetween the cyls is going to ensure no carb puke all the time. To ensure no carb puke i feel the complete fuel susyem needs to ne insulated from extreem & or constatnt heat just the way i described it should be done along with using the same hi quality hi perf 2k deg insulating material or all bets are off for eliminating all carb puke in most cases which is the main point i wanted to make here.
Ganain,If your bike does puke fuel in the future in higehr then mid 90 temps you could then insulate the carb & float bowl which wouldlikely take care of it for good at that point.
,did you also extend the overflow hose below the bike to keep fuel off the hot motor in case it puke's fuel again?
But thanks for trying it and posting your results here.