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My cylender is at the shop just got hone but for extra 40 they will bore it. Will i be able to tell much between standered bore highcompression and a .40 high compression bore?
 

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yes. But if your gonna bore it get the piston you want first and have them bore the cyl to the piston. Go find a nice 102mm piston and when your done you'll have a 686!!
 

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i thought the 100.5 was .40 over made it the 686 wesaco that was
 

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if you got the 100.5 yor cylinder would be 666cc
 

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as long as you are in the engine get a 4mm stroker and a 102 piston make it a 720 :)
 

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akawilliam said:
How far can the stock cylender be bored to?
102mm with the stock sleeve, 105.5 or 106mm with a new sleeve and case work.
 
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