Originally Posted by mrgsr
hey guys
i think my front bearing is worn, the one under the carb.
after every race i notice alot of oily gunk stuck on the carb above the flywheel. the engine runs fast and stroing and the temps are consistent.
could it be the front bearing or maybe still a rich tune? what size is this bearing?
Don't panic mrgsr - it's just the engine trying to tell you that it's running rich on the LSN. You would be able to lean the LSN a little and you may need to richen the HSN to keep the temps in check once you get the LSN right.
It only needs to be a little bit rich to force some oil out through the front bearing as it is lubricating it. Once this hits the flywheel it goes on the carb and anything else that is in the way of this radial arc.
Cheers,
Mike.