Stock ATC 110 bore spec

[Tri-ZNate]

My bore is 51.56 and I dont have my service manual handy, Is it stock bore and if so is it within spec?

[Tri-ZNate]

ok I really hope someone has a service manual lol. I just checked the homepage's spec page and it said stock bore is 52mm and I have 51.56mm :confused:. Someone please sort this out.

[Tri-ZNate]

so noone has a manual they can look in and tell me what the correct bore is?

[redryder]

I have an 79-81 honda manual. It says the standard value is 50.0-50.01 mm. 51.0-51.01 is considered a 1mm overbore. I hope this helps.