Different piston types?
On this parts display there are different pistons for the same bike. My guess is that the A size is STD size and all the sizes going down are slightly bigger requiring a borring and plating. My question, am i right with my therory and if so which one is stock and wich one is 1st and 2nd size over?
http://www.gofasters.com/index.php?m...0fd819d55672d0 Thanks for any help. |
The a, b, c, etc is very slightly bigger,, and does not require boring/plating. These are to keep the tight clearances as the cylinder wears.. I think they were like,,, .0005" difference?
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They change by 0.02mm I believe. Most bikes come fitted with an 'A' piston when new (check the cylinder - it's stamped on it) and then when you rebuild it down the road you'll change to the larger pistons.
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So i will not have to re-bore? Just mabe a replate if bad enough? If so thats realy cool. Thanks.
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