Thread: Help
View Single Post
Old 12-01-2015, 09:55 PM
wvirnwkr wvirnwkr is offline
Motorized Bicycle Newbie
Join Date: Nov 2015
Location: Georgia
Posts: 2
Default Re: Help

Blue thanks. Have 66cc new dax 2 stroke motor in stingray. motor mounted and aligned. Preformance head ordered from vender because stock head lost a cooling fin in shipping. Vender also sent a replacement stock head for replacement. Installed the preformance head and torqued 8mm head bolts to 15 ft lbs. Motor has so much compression I cannot petal and pop-clutch to spin over. I can remove plug and motor will rev cylinder up and down. Have stock plug NanJing Z4C- M14-11 and spark when held to head by hand while petaling. Would prefer better plug but not able to cross to a preformance plug but I have to get motor started first. Vender says piston could be hitting head and suggested possibly a thicker head gasket but since motor does spin with plug out and no hitting noise I am questioning this. dMaybe I should reinstall stock head and see if that gives me less compression so I can get motor to rev up while petaling. Thanks Mike
Reply With Quote