Question about 2000 Yamaha WR 400 F
I put cilinder and cilinder head of a yz 426, is running fine but overheats
Check to make sure your cooling fan is turning on,since you have added a bigger cylinder and piston than you have more combustion,which will make it hotter.if your fan is working and you have plenty of coolant,than you need to compare the size of the 400 radiator to that of a 426.you my need to change out radiators.
Posted on Jun 03, 2009
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Posted on Jan 02, 2017
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