When we put my new cam in, and started themotor, and revved it up (cam break in) the reverse light flashed on and off. We were also changing the oil at the same time, and letting the oil circulate through the engine, does it mean that the oil is low?

By the way, does anyone know the Raptor valve specs?

 

The reverse light flashing is some sort of tool used by yamaha techs. It flashes when you rev the motor real high for more than a few seconds when sitting still.

 

yeah, its 3000rpm or more for a certain number of seconds.

 

Are you talking of the specs for the hotcam? .008 intake and .010 exaughst.

 

a reverse light flashing on and off usually means you are tumbling down a hill backwards. if you have time to watch the light! [img]i/expressions/face-icon-small-tongue.gif[/img]

 

.008 and .010, man that is a heck of a gap. Imagine the lift and duration you are losing. The powroll specs for my 250x's cam is .002 and .003.

 

Stock specs are .0039-.0059 intake .0059-.0079 exhaust. The instructions that come with the Hotcam say they use the same lash as as the manufacturer to slightly looser. The cam card that comes with it calls for .20mm intake and .25mm exhaust. Thats .008 and .010. That equals to slightly looser than stock.

As far as the lift and duration goes. The hotcam has a better lift and duration than stock so I would guess your getting whats intended.