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HI Guys, well I've finally finished fitting my 100hp euro motor into my vboosted bike and have noticed that the flywheel pickups don't have as many pickups as the boosted model. euro motor only has two cables and boosted has five. i have the correct pickups to fit question is which cpu do i use...

Hi all i'm just about at the point of unbolting the motor and removing from frame, question can do you seperate motor from drive shaft with out removing the rear end. the yamaha work shop manual doesn't explain this step in the removing motor section.

HI Guys, would anyone know of any problems with replacing the motor in a 89 v-boosted max which has a compression of 10.5:1 with a euro 100hp motor which has a compression of 11.5:1, and conncet it to v-boost. I'm gonna be trying this out very soon as the orginal motor is very sick and needs...

Hi guys, after trying to solve my problem of voltage dropping with an increase in rpm's, i've been informed that the fault is with the magnet's in the magneto which are cracked causing more poles from within and a cancelling voltage between poles. Question is, where is the magneto? Service...

Well here we are again with a bit of a teaser question. I've got charging issues and after replacing battery and RR, voltage is up to 14.2v @ 1000 rpm, problem is the higher the rev's get the lower the supply voltage is to charge the battery. the yamaha service manual says the stator winding...

Hi guys I've got an 89 vboosted and it's had a had a hard life. I've just done a compression test and i'm down on one cyclinder others are reading 160 psi and 120 so i think it time for a valve grind. my question is do you have to remove the motor in order to get to the valve seats.