i heared the boysen water pump kit works wonders on the bikes, im going to be ordering it tonight when i get off of work..
and man i never thought this thread was going to have so much good information..
The Boyesen does work wonders. I gave it the ultimate test this weekend riding an extremely ugly Hare Scramble. Basically the whole race was 1st gear hell, BIG wet roots an rocks. There was 1 hill that was bottlenecked with a whole wack of riders. LMS kind of terrain. Took me 20mins to get up that hill, spinning and pushing the whole way.
Bikes overheating all around me and I didn't even get a burp in the puke tank
I've been using mine a year now racing Hare Scrambles and give it 2 thumbs up