Thread: Keihin CR Carbs
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Old October 21st, 2020, 04:46 PM   #4
Dave Wolfe
CCS Amateur #501
 
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Name: Dave
Location: Iowa
Join Date: Jun 2015

Motorcycle(s): '09 250 SE 'Booger'

Posts: 406
Ive recently got a set of cr special 33s on my bike. The main jet doesnt seem to influence off idle as far as I can tell.
These carbs only need a tiny crack of the choke.
To get mine to rev thru the mid range I had to move the needle clip down one position.
118 mj should be in the ballpark with no air filter. Im at 122 mj with no filter but have 300 ccs and 33mm cr carbs. All ive done for the idle mixture is turn the air screws. Of course im a racebike so I dont care much about low or mid range tuning.
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