Yz250 jets?

Beau_Given
Edited Date/Time 2/9/2016 4:33pm
I treated my self to a 2015 yz250 chucked on the vforce reeds and fmf expansion chamber and muffler... Proble is my bikes running rich and I need to rejett the bike has any one done this befor and if so what size jet did you replace it with??? I'm running my fuel 40:1
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floridaflash
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floridaflash 2/8/2016 6:02pm
2/8/2016 6:02pm
what kind of fuel
riggedfmx
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riggedfmx 2/8/2016 6:10pm
2/8/2016 6:10pm
I'm curious as well. I just picked up a 15 yz250 with a pro circuit pipe and silencer as far as I know it hasn't been rejected. It runs on straight c12. If I got vforce would I need to rejet it?
Beau_Given 2/8/2016 6:30pm
2/8/2016 6:30pm
98 premium.. Yeah because with the pipe and reeds your change the air flow in and out of the engine putting the fuel mix out of wack
Premix
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Premix 2/9/2016 3:56pm
2/9/2016 3:56pm
Needle all the way down, 48 or 45 pilot, 165-170 main is what I think I ran last year. 110/93 50:50 32:1 927.

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Hcallz5
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Hcallz5 2/9/2016 4:24pm
2/9/2016 4:24pm
Pickup a NECJ needle for a Suzuki
Jakes Dad
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Jakes Dad 2/9/2016 4:27pm
2/9/2016 4:27pm
You're on the other side of the world in an entirely different season, can't think that hard right now. But start leaning on the needle 1st. I think I have the NECJ needle in Jake's bike at 2nd from top right now with a 178 for the cool weather here right now. Run 100LL with Motul 800T at 32 to 1.
Evoracer
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Evoracer 2/9/2016 4:33pm
2/9/2016 4:33pm Edited Date/Time 2/10/2016 8:22am
There is a whole thread on TT. Start with a #8 slide, work on the rest from there. imo

Check the timing thread as well...

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