Vintage Dirt Bike Q & A

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PostPosted: Tue Dec 28, 2021 4:10 am 
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Joined: Tue Aug 31, 2004 1:44 am
Posts: 283
Location: Maysville, AR
does anyone have a good starting point for jetting this carb on a 1979 CR250?

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(2) 1968 DT1 1970 RT1M,1970 DT1C 1971 RT1B Enduro 1974 MT250 1974 DT250A (2) 1975 DT400B 1974 DT100,1978 DT175
1975 CR250M1 1979 CR250R 1979 Kawasaki KZ400H1 Jesus is Lord!!


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PostPosted: Fri Feb 18, 2022 9:23 pm 
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Joined: Tue Aug 31, 2004 1:44 am
Posts: 283
Location: Maysville, AR
ok, since no one responded after all this time, I took the initiative. first you need one of these to install a 38mm carb Such as the Keihin Airstriker.
https://www.ebay.com/itm/122017534457

this is Airstriker I put on. https://www.amazon.com/dp/B00C178JY4?ps ... ct_details

I installed the new carb and it started after the 4th or 5th kick, Had to tweak the idle mixture and idle speed a bit but got it running pretty good with no jetting changes so far and it has nice throttle response.

here is the video.
https://www.youtube.com/watch?v=wYcedHNwVt0

_________________
(2) 1968 DT1 1970 RT1M,1970 DT1C 1971 RT1B Enduro 1974 MT250 1974 DT250A (2) 1975 DT400B 1974 DT100,1978 DT175
1975 CR250M1 1979 CR250R 1979 Kawasaki KZ400H1 Jesus is Lord!!


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