85 250r or the 282r lol.. bored 30.5 over gone through top and bottom end from frame up ...been 20 years since my last r,and it was a 86 and 85 200x
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85 250r or the 282r lol.. bored 30.5 over gone through top and bottom end from frame up ...been 20 years since my last r,and it was a 86 and 85 200x
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30.5 over makes no sense nor does it = 282 if stock size is 66mm and nor your at 96.5mm
a 310R is 72mm piston
if anything your maybe 3.5mm over the stock size because a factory sleeve wouldnt allow for much more.
Perhaps he meant .035" over? That would put him at a 66.889mm bore.
1987 Honda 250SX
1987 Honda 200X
I'm at a 69.5 bore max u go ...it's running pretty good but it kinda kinda citing out or sputtering lit bit till u get in higher gears ..gas line come off carb other day while zipping around and carb ran out of fuel it quit cutting out and was running like it should..why would it do that?
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your no ware close to a 282cc. Can't figure it, please take it to a local shop where they will be experienced in properly looking at it
69.5 bore x 72 stroke = 273.1 cc
The equation is done this way if others are interested .
6.95 x 6.95 x 7.2 x .7854 = 271.1
Bore x bore x stroke x .7854 = cc
This works on any motor to measure displacement
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