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The bike has been re wired properly following the hanes mauel im not new to bikes im just knew to this age of bike i think it will be my jets because who i bought it off of had everything cocked about with and all im tring to do is set it standered not make it a beast or a weapon jusy so everything is as it should. And the piston what was in it wasnt the best scratched to death along with the barrle so i changed it all to standered. The micrometre was for the piston not the barrle as its easy to messsure a piston to a barrle im well aware, ill be getting it sent off to someone who can set up my carb because that to me is the problem, when i started cleaning it all the af screw was jammed in and the idle screw all the way in inicating it ran like shit before for best words
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Im pretty sure the bore isnt oval, it is hovewer tapered slightly towards the bottom...
The manual should tell you where to meassure.
A crude way is to insert a feelergauge between the piston and cylinderm this will give you a ballpark reading.. -
@Jens-Eskildsen Not oval oval, but they are not round. The piston can go in both ways, but should ONLY be put in the correct way.
Always Originate, Never Pirate!
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How are they supposed to bore and hone a cylinder, and not have it just about perfectly round? It is round to within very fine tolerences, which I wont even bother to look up in the servicemanual, but a guess is a couple of thousands of a milimeter. If you call this conical, fine be me. But then anything is conical.
The piston has different thickness, not the cylinder. Piston is smaller at the top, because it expands more there because of the heat, so its made a bit conical
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@Jens-Eskildsen My bad, I was wrong about that sorry.
It's because the piston pegs foul the ports if it's inserted the wrong way round, not oval.
Still though, I am pretty sure you shouldn't be measuring the bore wither verniers etc.
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Agreed on the verniers you cant meassure the cylinder precisely with those.
