Soflowrider
New Member
hello new to the forum. Just installed my 66cc motor on my bike and started riding. I installed a tach so I could keep an eye on my RPMs while riding, I have since noticed that while the motor is engaged and at WOT I am only getting 2700rpms but when I have the clutch engaged the motor revs up to 5000 RPMs. I do have some upgrades to my motor, high compression head, expansion chamber, 30 tooth sprocket and dellorto carb with a #65 jet. The engine had this problem before I added the chamber, sprocket and the carb. My engine kit came with a high compression head which I swapped with the stock one before ever starting the engine. My top speed is only 33. Mph I figure I should be moving with this parts. Also the engine does excelerte past 2700 RPMs when going down hill but then settles back down to 2700. Any one have any ideas on what it may be? (One pic is of current condition other is of the high compression head)