HarleyTechTalk

Technical Forums => Twin Cam => Topic started by: D-1 on December 13, 2021, 01:14:18 AM

Title: CC per 0.001"
Post by: D-1 on December 13, 2021, 01:14:18 AM
Does the 0.007" per 1cc (approx) on TC heads work for 110 or MVA heads too. I need to go from 94 to 91.
Title: Re: CC per 0.001"
Post by: Don D on December 13, 2021, 04:28:06 AM
It will take a few hops. Start at -.015.
Title: Re: CC per 0.001"
Post by: D-1 on December 13, 2021, 04:14:38 PM
Thanks
Title: Re: CC per 0.001"
Post by: Hillside Motorcycle on December 15, 2021, 02:29:20 AM
We consistantly see .006" per cc.
Title: Re: CC per 0.001"
Post by: D-1 on December 16, 2021, 03:36:18 PM
Took 0.017 off and got 90.8cc, so thats just under 0.006" per 1cc as said above. Thanks for the guidance.
Title: Re: CC per 0.001"
Post by: Don D on December 17, 2021, 06:59:04 AM
In your case .0053"/CC, and that is not a static number. The chamber does not come down in a linear way as you move up with the amount milled. As stated by others in the past and for the benefit of others in the future, it is best to creep up on the number and not rely on a certain static CC/in figure except for the roughing cut.