bad day in the sand pits

[250rdrag]

Planned a big riding trip to the sand pits up in poland new york today. Was going at good first, did a few drags with my ESR310 ATC250R. It was running good, like it has since i built it march of this year with a new ESR cylinder. Half way through a woods ride, it made terrible noise and locked up. Tore it apart and found broken honda rod, piston and sleeve skirt. Kind of bummed, since i havent even changed the plug all summer. No major wear, just freak rod failure i guess.

[benjaminearl]

hey man . where abouts you live? im from deerfield right below poland. i go to the pits quite a bit sometimes. be fun to do some ridin. i never see anyone in the pits when i go up weeknights

[Honda 250r 001]

wow, thats really weird this is the first honda rod failure i have ever heard of.

[steve250r]

I had a OEM short rod snap in half and put a hole in the cases and also broke the cylinder skirt. Pretty much trashed everything.

[Honda 250r 001]

Originally posted by steve250r
I had a OEM short rod snap in half and put a hole in the cases and also broke the cylinder skirt. Pretty much trashed everything.

man! that bothers me now, I got a 310 and NO money to replace it if i snap a rod. Were your guys motors set up mild or were they as far as a 310 would go?

[All250R]

Rods can fail for a number of reasons not related to manufacturing quality. At least the tins didn't fly off like a new wiseco.

[250rdrag]

Not sure what happened first. cylinder bore looked good and was still on 72 mm bore. had it apart few weeks ago, looked good but i re-ringed while it was apart. seems like sleeve or piston cracked first and top of rod ripped apart when it jammed, but i have no way of knowing. hope these new esr cylinders arent going to be bad luck. not sure what i am going to build now. still have a pro-x 310 i can run.

[steve250r]

Mine was pretty much a stock engine. The only crank failure I've ever had on a 250r engine out of the probably 20 or so that I've had.

[revman]

that sucks...i ve been running the same set up all year. lets just hope is was a freak thing. i just changed my plug for the first time this year also. i gotta say it a good relialble set up. you ever get up to gravesville??? were usually up there every sunday. some good drag racing goes on. some big iron up there.

[benjaminearl]

gravesville is the only place i ride that way. its the only pit any good. im headin up later this week as long as i get a silencer before then. Revman where you from?

[destey]

Impossible. Honda parts do not break or even wear.

Honda parts actually get stronger and more in spec as they age.

[revman]

Originally posted by benjaminearl
gravesville is the only place i ride that way. its the only pit any good. im headin up later this week as long as i get a silencer before then. Revman where you from?

im in mohawk. how bout you? were going up sunday we usually get there around 9 or 10. what do you ride?

[Honda 250r 001]

Originally posted by destey
Impossible. Honda parts do not break or even wear.

Honda parts actually get stronger and more in spec as they age.

ya you make a good point, was the rod you were using from a 86 quad with a 431 puma bolted on it? lol

[250rdrag]

i live in cedarville. a bunch of us usually go up to poland a couple times a month during the summer. we have 3 or 4 atc250r's in our group. i have two myself, a 310 and a 330. never re sleeved the 310 that shattered. hope see a good group in the sand pits this summer

[danhung11]

Just curious, was it the PV version?

[norcalduner]

Originally posted by danhung11
Just curious, was it the PV version?

x2 ..... also what brand premix and premix ratio are you using?