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Old 04-19-2009, 07:11 PM
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datz510 datz510 is offline
Motorized Bicycle Elite Member
 
Join Date: May 2008
Location: Mesa, AZ
Posts: 290
Default Re: Mikuni carb for Whizzer NE5

went through the whole bike today checking things out. I played with the cam timing, checked ignition, and then checked the valve adjustment.

Turns out that the intake valve lash was very loose and was set at .020-.025"!!!! The intake valve was barely opening! I adjusted both the intake and exhaust valves and set them to .006" and .008" respectively and the bike runs SO much better now.

I tinkered with the carb a bit more, sealed up the intake manifold and found that it was missing a gasket. So, I made a gasket and got the intake air tight.

The carb is very close, but still not right. I can't get a consistant idle, but running down the road, the bike is at 90% tuned now. Its pretty darn close. It actually has reasonable power at the low end now.

I'll be ordering up a nice Mikuni 26mm carb to get it dialed in 100%. The carb that is on there belongs in the garbage..
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