[just installed my 310 pv] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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just installed my 310 pv
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Posted by: deathman53

I just put in a lrd 310 pv in my 86 atc250r, its really nice. I think they sent me a different cylinder head(as I told them on the phone thats its going on a atc), it doesn't have the spark plug coming out of the center of the head, the plug is angled from the center(like how the stock way is). I had to legnthen my radiator line from the 2 radiators. I did two break-in cylces and I'm gonna put a richer needle in and figure out the main jet size I need(a 182 is in there now, believe it or not thats what I used in my stock ported motor). I'll be a chattsworth next saturday or sunday to run it on the track.

Posted by: beerock

dont chnage the needle first, change the main till you get that right then play with the needle

Posted by: deathman53

I richened the needle today and it seems better. I had the needle all the way lean, I'm gonna bring a 185,190, and a 195 with me when I go riding.