Text only | Text with Images

HarleyTechTalk

Technical Forums => Twin Cam => Topic started by: 838 on October 29, 2020, 10:06:28 AM

Title: S&S 107 kit cylinders.
Post by: 838 on October 29, 2020, 10:06:28 AM
Can these be bored at all?
Title: Re: S&S 107 kit cylinders.
Post by: Ohio HD on October 29, 2020, 10:24:40 AM
Are they S&S 3.927" or S&S 3.937"?

3.927" bore +0.010"

3.937" paper weight
Title: Re: S&S 107 kit cylinders.
Post by: Don D on October 29, 2020, 11:13:35 AM
Sure no problem.
Pistons are KB714lca, in stock.
106 S&S is 3.927 and will allow the overbore.
I would not bore bigger than 3.937 with stock or S&S barrels with cast liners.
I have taken the 4" steel liner barrels .005 OS
Title: Re: S&S 107 kit cylinders.
Post by: Ohio HD on October 29, 2020, 12:51:55 PM
These could also be S&S 910-0500 which are 3.937", and is a 107" and can not be bored. That's why I asked to clarify what he has. He stated a 107". The 3.927" is a 106".
Title: Re: S&S 107 kit cylinders.
Post by: Hillside Motorcycle on October 30, 2020, 04:46:12 AM
We have bored/honed several sets, using our #HMM1070 piston/gaskets kits, J&E forging.
That coated piston skirt measures 3.935" a-typically.
Puts those back in service.
Title: Re: S&S 107 kit cylinders.
Post by: Bafflingbs on November 09, 2020, 07:45:39 PM
Why not just go 110"? S&S and HD cylinders are thin, but strong. I'm glad I went with it.
Text only | Text with Images