Originally Posted by Zerocyde
Just went and checked and my 50cc rear pump has the brown cam in it, but I have it installed flat side up, rounded side down. I remember thinking how the pump was like, already half squirted while just at rest with the brown cam installed rounded side up. Was I correct to install flat side up?
Depends on the style cam some are flat on top and bottom depends on their transition! And can be tailored by filing! Heres a good video by Holley watch close and pause it when you come to the cam installation and you will see!! And I wont have to type a book LOL
A pictures worth a thousand words!!
and heres a chart that may help you!