Why is my banshee constantly over flowing radiator fluid ?

[Thomas_S]

Ok, well i recently rebuilt my whole banshee from the crank shaft which is now a 4-mil stroker with bored over pistons, power reeds, FMF SST fatty pipes, SST powercore exhausts and new seals/gaskets all around. Before the rebuild it ran fine and never over flowed.. Mow after the rebuild as soon as I start it the radiator fluid over flows and then eventually stops. Soo I ride it for half an hour or less then let it cool and then it over flows again. what could be the problem..?? I'm thinking i should just buy a new head and head gasket since that's the only thing that's not new besides the clutch basket and gears .. 

[Colby]

rebuild the water pump? new impellar, bearing, etc.

 

in the radiator ...  75% distilled water, 25% antifreeze

[Thomas_S]

If I'm mixing it 50/50 could that be the problem ?? Should I get an aftermarket impeller and motor ?

[sprinklerman]

Check the head gasket ?

[Thomas_S]

The Head gasket is new, and so are all the other gaskets.. Could it be on wrong ?

[hercalmighty]

did you have the head cut for the 4mil crank or are you using a spacer plate? did you do a leak down test after the rebuild?

[Jereme6655]

You do know that you can fill the banshee radiator all the way correct?  What I should say is that when you fill the radiator on the banshee all the way up.....it will puke out coolant until it gets to a certain point where it will then stop over flowing....its roughly about an inch from the top of the radiator.