
21 Jan 2003
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Registered Users
New on the HUBB
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Join Date: Oct 2002
Location: Wellington New Zealand
Posts: 12
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Thanks Fred, bike has a K&N filter and Micron exhaust but still with standard jetting, (130 in first carb), so should be running a bit leaner than std already.
Quote:
Originally posted by FredXTZ:
It all depends also on your exhaust and air filter. A standard 660 has a very rich mixture. The first thing to do is either drill a hole in the exhaust damper end pipe or mount an other exhaust, and mount another air filter like K&N. This is reasonably ok for sea level. If you want to mess with the carb, try a smaller main jet in the 1st carb, say 124-126 instead of the standard 130 [this is for 3YF models 91-94]. I have 122 which is standard for newer models, in combination with a lifted needle in the 1st carb. by 1 pos.
For mountains upto abt. 2200 m. you can drop the needle in the 1st carb by 1 pos.
I have no experience with higher altitudes.
Remember that measuring on a test bench is always the best.
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