Mechanical help with conrod play

[Phil_86]

hey im new here so hello. Last week i brought a gas gas ec200 2002 and its already stuffed out. i checked the top end and all is fine just wondering how to check bottom end how much play side to side in the conrod should there be? my bike died on me and when i went to kick it it made a crunch there is some marks down by the bottom of the conrod on either side looks like the piston has hit.. anyone know any good two stroke mechanics with resonable rates ?? please help huys want to get back out triding cheers.

[flyingcr250]

hey im new here so hello. Last week i brought a gas gas ec200 2002 and its already stuffed out. i checked the top end and all is fine just wondering how to check bottom end how much play side to side in the conrod should there be? my bike died on me and when i went to kick it it made a crunch there is some marks down by the bottom of the conrod on either side looks like the piston has hit.. anyone know any good two stroke mechanics with resonable rates ?? please help huys want to get back out triding cheers.

gutted, were did you buy it from? you should talk to the guy you bought it from. was there any work done to the motor prior to you buying it? are you able to post some pics??

[B0000M]

just out of interest was it the one that got withdrawn from trademe? with all the road bits and pieces

http://www.trademe.co.nz/Browse/List...x?id=203184961

[flyingcr250]

just out of interest was it the one that got withdrawn from trademe? with all the road bits and pieces

http://www.trademe.co.nz/Browse/List...x?id=203184961

that was the first place i looked too.

[Rupe]

hey im new here so hello. Last week i brought a gas gas ec200 2002 and its already stuffed out. i checked the top end and all is fine just wondering how to check bottom end how much play side to side in the conrod should there be? my bike died on me and when i went to kick it it made a crunch there is some marks down by the bottom of the conrod on either side looks like the piston has hit.. anyone know any good two stroke mechanics with resonable rates ?? please help huys want to get back out triding cheers.

Hey phil, sounds like the bike you brought off me a couple of weeks ago.

Something doesn't sound right, piston wasn't that old, and new bearings were put in the bottom end. We checked the play in the bottom end and everything was in spec. As the cases were split we put it back together and replaced anything that needed. which was 3rd gear bearing, selector fork, crank bearings, and a fresh top end.

Barty5 on here knows my bike prob better than me so might be able to shed some light as what you said doesn't make sense.

Just a quick note, you mentioned changing the mixture, did you keep it the same? And did you let the bike warm before riding?

[LittleJohn]

Where abouts in Auckland are you?

[Phil_86]

yea off trade me payed pretty good money too. was told it had lots of work done did 4 hours and something has gone unsure what yet checked top end and was fine .. what could i possibly do maybe it just had a dodgey rebuild .
just my luck tho. should have stuck to jappas.

[Rupe]

yea off trade me payed pretty good money too. was told it had lots of work done did 4 hours and something has gone unsure what yet checked top end and was fine .. what could i possibly do maybe it just had a dodgey rebuild .
just my luck tho. should have stuck to jappas.

What do you meen gone? the rebuild was good as from the receipts you can see that was last year. What actually happened?

[Phil_86]

i chnged the type of oil but still run 40 to 1 25ml per litre just was riding wood hill when it stopped unsure whats happened but piston and ring fine bore fine. when i went to kick it it made a sort of crunching noise. but more to the point who would i b best to take it to to look at. i have head and stuff off. just want to fix other wise geeze .

[LittleJohn]

i chnged the type of oil but still run 40 to 1 25ml per litre just was riding wood hill when it stopped unsure whats happened but piston and ring fine bore fine. when i went to kick it it made a sort of crunching noise. but more to the point who would i b best to take it to to look at. i have head and stuff off. just want to fix other wise geeze .

Where in Auckland are you?

[Rupe]

i chnged the type of oil but still run 40 to 1 25ml per litre just was riding wood hill when it stopped unsure whats happened but piston and ring fine bore fine. when i went to kick it it made a sort of crunching noise. but more to the point who would i b best to take it to to look at. i have head and stuff off. just want to fix other wise geeze .

Don't panic mate, the bike was good when I sold it. To me that doesn't sound like the bottom end. If it was the kickstart would be seized.

[Phil_86]

manukau city how do you tell what has gone in the bottom end should the crankshaft have play left and right.

[barty5]

As rupe stated everything was sweet in side (if this is same bike) and had been running sweet. if you want you could bring into work shop in newmarket as rupe has said it its sezed up you wouldnt be able to turn ova. good chance somthing in kick start may have gone.

[barty5]

manukau city how do you tell what has gone in the bottom end should the crankshaft have play left and right.

will allways be a small amount

[barty5]

i chnged the type of oil but still run 40 to 1 25ml per litre just was riding wood hill when it stopped unsure whats happened but piston and ring fine bore fine. when i went to kick it it made a sort of crunching noise. but more to the point who would i b best to take it to to look at. i have head and stuff off. just want to fix other wise geeze .

What brand a oil.