what bore size do i have in my bike?

[joshv5.0]

what bore size do i have in my bike?

 

i measured the piston at 65.5 mm is it .060, .080?

[DIRTBIKEZ]

.060

 

 

 

Hope this makes sense.

 

Current bore - stock bore = overbore

 

65.5mm - 64.00mm = 1.5mm

 

1mm = approx .039"

 

1.5mm= approx .060"

[joshv5.0]

.060

 

 

 

Hope this makes sense.

 

Current bore - stock bore = overbore

 

65.5mm - 64.00mm = 1.5mm

 

1mm = approx .039"

 

1.5mm= approx .060"

282594[/snapback]

 

 

ok when i measured it with the micrometer i got 65.5 BUT the part number on top ends with 6600 and the local shop told me that that means that i have a 66.00mm piston which is .080

 

i am thinking i should go with the .080 over

[DIRTBIKEZ]

The cylinder bore is more important to you than the piston size. Do you have the tools to measure that?

[FIRST BANSHEE]

.060

 

 

 

Hope this makes sense.

 

Current bore - stock bore = overbore

 

65.5mm - 64.00mm = 1.5mm

 

1mm = approx .039"

 

1.5mm= approx .060"

282594[/snapback]

 

 

ok when i measured it with the micrometer i got 65.5 BUT the part number on top ends with 6600 and the local shop told me that that means that i have a 66.00mm piston which is .080

 

i am thinking i should go with the .080 over

282598[/snapback]

if i remember correctly the top of your right piston said .060, it was hard to tell in the picture though.

[Ducman]

The cylinder bore is more important to you than the piston size. Do you have the tools to measure that?

282602[/snapback]

 

 

What he said. Your piston may measure 65.5 but it needs to live in a hole slightly larger than itself. If it says 6600 I'd say that the piston is for a 66.0 mm bore which is a .080" over bore. You might be ready for a big bore sleeve kit soon.