MAFirst4
Member
Hey all,
I have been modifying my 66cc 29inch cruiser this past month and I have just a few questions. Here's where I'm at, I run the speed carb with the clip on the needle second from top. I have a mild expansion chamber exhaust pipe and the Fred high compression head installed. I am running a champion cj8 plug.
She runs pretty well overall, I'm 220pounds and it does about 27mph on flat over 30 downhill but I feel like it can do much better. I notice after about 20mph it goes from 2cycling to 4cycling. It continues to pick up speed but seems to bog as it does, or not sound like a real 2cycle should.
Why is it 4 cycling? It's not rich the plug looks great. Do I need to get a better carb? And what carb can I get that is the most adjustable? What about Cdi. I know there are some out there like jaguar, but will they help run my high compression engine and stop 4 cycling, do I need more spark? Different plug?
any information is helpful. And anyone running the 5.3 original Fred head, let me know your setup with it!!!
thank you!
-Brett
I have been modifying my 66cc 29inch cruiser this past month and I have just a few questions. Here's where I'm at, I run the speed carb with the clip on the needle second from top. I have a mild expansion chamber exhaust pipe and the Fred high compression head installed. I am running a champion cj8 plug.
She runs pretty well overall, I'm 220pounds and it does about 27mph on flat over 30 downhill but I feel like it can do much better. I notice after about 20mph it goes from 2cycling to 4cycling. It continues to pick up speed but seems to bog as it does, or not sound like a real 2cycle should.
Why is it 4 cycling? It's not rich the plug looks great. Do I need to get a better carb? And what carb can I get that is the most adjustable? What about Cdi. I know there are some out there like jaguar, but will they help run my high compression engine and stop 4 cycling, do I need more spark? Different plug?
any information is helpful. And anyone running the 5.3 original Fred head, let me know your setup with it!!!
thank you!
-Brett