Going from PWK 39 tp 40.5
Going from PWK 39 tp 40.5
I picked up a atc250r that has a 310 cylinder and a 40.5PWK.
I am thinking of swapping the 39PWK off my 500.
Do you think if I just swap the jets everything will be good or do I need to change for the different size? Forgot how tippy these are lol.
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I am thinking of swapping the 39PWK off my 500.
Do you think if I just swap the jets everything will be good or do I need to change for the different size? Forgot how tippy these are lol.
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CR500...WINNING!!
- NightBiker07
- Posts: 1942
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that is a badass 250R!
really wouldnt think swapping the carbs on the 2 bikes would make enough of an improvement for all the dicking with the jetting on both bikes, unless youre chasing high-rpm power on the 500.
really wouldnt think swapping the carbs on the 2 bikes would make enough of an improvement for all the dicking with the jetting on both bikes, unless youre chasing high-rpm power on the 500.
2000 CR250, pipe, filter, Vforce
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
- Roostius_Maximus
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the 39pwk usually needs one pilot size smaller than the 41, otherwise the jetting can be very close just copying what you run
http://www.youtube.com/user/500bigbore
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- Rhino89523
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- louis mielke
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- iggys-amsoil
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Ever thought of swapping the forks side to side so that the axel is in the front? You'll have extra brake line but no problem. If I remember right your 350X is like that already.
Did that on mine way back then and it mad a big difference in arm and shoulder pump. Plus they look cooler that way.
Did that on mine way back then and it mad a big difference in arm and shoulder pump. Plus they look cooler that way.
Trinity Racing mild porting FMF
62 pilot, EGH needle, 172 main
03 Gen III CR250 frame
2013 Dodger Charger 5.7 Hemi
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Your Amsoil Customer # 350882
62 pilot, EGH needle, 172 main
03 Gen III CR250 frame
2013 Dodger Charger 5.7 Hemi
http://www.prisonplanet.com
Your Amsoil Customer # 350882
- louis mielke
- Posts: 96
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Changing from trailing to leading axle will change the handling on the 250r pretty dramatically. The 350x was designed with leading axle. Changing the rake and trail, could possibly make steering really heavy.
I've fought that battle on my conversion. Obviously mines a dirt bike frame and custom front end but through trial and error I've learned that the front end geometry can make the difference between a trike turning on a dime, or being unride-able.
I've fought that battle on my conversion. Obviously mines a dirt bike frame and custom front end but through trial and error I've learned that the front end geometry can make the difference between a trike turning on a dime, or being unride-able.
"Don't worry, it will grow back!"