Rps Hawk 250 carburetor

[Jmcgee]

Originally Posted by Ariel Red Hunter

The Keihin has 0.8 mm threads. The Mikuni has 0.75 mm threads. That's close but not identical. The Mikuni jets will thread into the Keihin carburetor ok, but the Keihin jets will screw up the threads in the Mikuni carb.

Where did you get this information, I would like to read it. everything I have found said the head of the keihin jets are a mm bigger also, these are not. maybe its a china thing and not real brand copy jets. wish I had a metric thread pitch tool....

[Ariel Red Hunter]

Originally Posted by Jmcgee

Where did you get this information, I would like to read it. everything I have found said the head of the keihin jets are a mm bigger also, these are not. maybe its a china thing and not real brand copy jets. wish I had a metric thread pitch tool....

I got this information from Human Being's post # 13 on the "Bashan Blaze can't get past 7000 RPM" thread. Human Being seems to be able to read Chinese. He often posts on electrical problems.

[Jmcgee]

Originally Posted by Ariel Red Hunter

I got this information from Human Being's post # 13 on the "Bashan Blaze can't get past 7000 RPM" thread. Human Being seems to be able to read Chinese. He often posts on electrical problems.

I believe he is mistaken.....
from jets are us
OVERALL LENGTH = 9mm
HEAD DIAMETER = 8mm
THREAD DIAMETER = 4.9mm
THREAD PITCH = 5.0 x 0.7
MIKUNI N100.604

and no KEIHIN is the same physical size, so mikuni knock off main jets may be in these stock carbs