dudz

Just watched this video .... http://www.youtube.com/watch?v=0Em0GiLSO70 Seems the side to side movement is normal. So it has to be rings I guess. Which would answer my my sherco had more compression too

I have had my 280 for about 6 months. Its a 2004. I used to have a 2003 sherco 250cc, which had lots more torque for some reason. Anyhow. Today a knocking down low got worse very quickly. Sounded like piston slap. Took the top end off. No scratches or grit inside the barrel. Rings look ok. Small end bearing has a little amount of play if I twist the piston along the line of the small end. (it rocks). The conrod has a massive amount of play when rocked side to side in parrallel to the crank (towards each end). Verticaly there is no play. Im strongly guessing this is wear on the big end bearing ?? The noise is not uniform. It sounds like a lump of wood in a slow running tumble dryer. Gets worse at higher revs. When cold it didnt seem to make any noise. I looked for the two bearings separate to the conrod, but it seems to come as a complete kit for 145 pounds !!. This seams very expensive to me. I have bought these bearings for different bikes before which didnt cost more than 25 pounds for the two.

Hi everyone, I am 45 years old. I use my gasgas 280 txt pro for just plain fun out in the forest. I am English but Im living in France.