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Discussion Starter #1
Checked vavles today and have an inlet thats closed up, now bikes done no more than 50 hours from new, already had 1 new piston and going to put in another. still on orignal valves, how much can they stretch before replacing? will mine be ok just for a shim or shall I replace?

Also when its apart is it worth going for a high comp piston (cosworth,wossner,wisceo?? what one do people recomend?) over standard? Will jetting etc need to be done if i do so?

Its a B***h to start when hot i DNF'd sunday coz of it so time its comes apart! also after i been doing 15 mins everytime i come off the track knock it down in to 1st to walk back to van my bike just dies it will not tick over? if anyone can give me some ideas to sort it would be greatly appreciated :) thanks
 
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