CT70H First Build, A Wreck

I would also throw a timming light on it use a adjustable one and a 12v battery near by. If the advance is not working that could contribute to hot exhaust pipe.

Also there is a product called Blueaway it is like a polish it will remove the yellowing or blueing from chrome.
 

mbe093

Member
Little update here. I have 100 miles on the bike and ive learned a ton.

1. Nut and bolt check sooner than later. I found some loose ones including the front axel.
2. Chinese ebay look alike carbs suck in my experience. I jetted and messed with settings an unbelievable amount until i said screw this. I got a Mikuni VM20 and gained 10 mph after just bolting it on, hooking up fuel and getting crafty with the cable length. After installing a filter it ran too rich, went to the leanest needle setting and its still a hair rich. I will end up jetting it but the carb and response are excellent with no air cleaner. Granted its a way bigger carb so the jetting is understandable.
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I have taken it into some trails as you can see and as i said in my first post. Yes the green bike has done a lot of burnouts and runs better than mine and another fresh resto in my neighborhood. Beater 3 speeds are the best bikes no question. Happy fathers day to all the fathers, i wouldnt be into this if it werent for mine.
 

69ST

Well-Known Member
I'd want to know why the air filter is making it run rich, when it ran fine without it. That's the definition of an airflow restriction and it's costing you power/efficiency.
 

mbe093

Member
I'd want to know why the air filter is making it run rich, when it ran fine without it. That's the definition of an airflow restriction and it's costing you power/efficiency.

Yeah, poorly made aftermarket filter. The inlet of the Mikuni is 43mm and this filter was a stretch fit. After that it necks down to probable 25-30mm causing a huge restriction. New filter on the way.
 
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