Two Stroke Motocross

Two Stroke Motocross Forum => General Two Stroke Talk => Topic started by: oppenheimer77us on January 10, 2013, 06:04:17 PM

Title: 2006 CR250R Honda Keihin carb upgrade
Post by: oppenheimer77us on January 10, 2013, 06:04:17 PM

I was hoping for some feedback from anyone with experience fitting a PWK airstriker to a late model CR250 (2006). I just ordered the JD kit (I have had great success running their needles) and will go with their baseline jetting specs. I ride at 2000=3000 above sea level for the most part and the motor is mostly stock with the exception of an FMF system and V-force reed. I have been running high test pump gas and Maxima Super M at 40:1. If anyone could provide feedback about installation, jetting, or any other issues it would be most appreciated. TIA.

Title: 2006 CR250R Honda Keihin carb upgrade
Post by: luthier269 on January 10, 2013, 09:45:08 PM

We have a 2005 cr250 and we put a 38mm air strike carb on it and it made a world of diference. Ours came with a different throtle cable. We are at sea level jetting has been good we could use a leaner pilot jet but been to lazy to change. We are running a FMF gnarly pipe and V force reeds.

Title: 2006 CR250R Honda Keihin carb upgrade
Post by: 800screws on January 10, 2013, 11:08:03 PM

whats the actual benefit and results from running the pwk?

Title: 2006 CR250R Honda Keihin carb upgrade
Post by: luthier269 on January 10, 2013, 11:48:48 PM

The mikuni is very erratic and hard to jet consistantly. Also the kiehn gives it more bottom end. My son said when we put it on that it ran like a new bike compared to the old carb.

Title: 2006 CR250R Honda Keihin carb upgrade
Post by: oppenheimer77us on January 14, 2013, 04:12:36 AM

Got the carb today and it came with several needles and main jets, if it ever stops snowing I will report my impressions of the carb swap