Originally Posted by
haz87
The question is why? If its due to low idle pressure then this is a proper bodge around an actual cause.
Equally, have you considered the impact of speeding it up? Cavitation comes to mind immediately.
I agree with you about finding a cause first and solution after.
When I rebuilt my engine, I checked the clearances of the bearings with plastigauge. I was in the range but not far from the maximum clearance.
I changed the oil pump after the rebuild in a second time.
The pressure at idle is about 1.6 bar (28 PSI) hot.
For the cavitation, I am not sure if we are concerned with oil. I don't expect a big increase of oil pump RPM, maybe something about 10% to 20% maximum.
Mecanically, some people remove the rev limiter and they don't care about the oil pump if revolutions reach 7500 rpm or more.
Originally Posted by
20/20 vision
never heard of this mod on a YB engine but it is common on Hayabusa bike engines!
also, the jackshaft pulley is exactly twice as many teeth as the crank pulley and if you're using the distributor cap (or the phase sensor within the distributor body) the sparks will lose sync with the crank position which will be fun
Good to know about the Hayabusa. For the ignition distributor and the phase sensor, they were removed. I didn't need them anymore with my ECU.