Andrews 48H + 103" cylinders

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Feb 13, 2015 | 09:27 AM

saz

Thread Starter

Cruiser

Joined: Aug 2014

Posts: 245

Likes: 7

From: Windsor, CO

Andrews 48H + 103" cylinders

Ultimately I want to build a 107" or bigger motor, but right now I am on a very tight budget. So the easy button would be to call Scott at Hillside or Kirby at V-twin and send them my jugs and heads and be done with it. BUT, like I said I am on a very tight budget.

I have found a set of 103" cyinders with SE flattops (#29893-07A), very inexpensive, and only about 5K miles on them. I want to use my current Andrews 48 cams, and stock heads. I have also found a SE 50mm TB cheap also. So with all this stuff together, where would my compression be? Can I do this with my current cams? Just rolling ideas around on how to do this on the cheap for now; I cant leave ANYTHING alone.......

Feb 13, 2015 | 10:50 AM

djl

HDF Community Team

Joined: Jun 2006

Posts: 12,779

Likes: 2,609

From: san antonio

Quote:

Originally Posted by saz

Have the cylinder/piston fitment checked in torque plates; hone cylinders to break glaze and cross hatch and new ring pack. You can use the 48s but retain the stock head gasket thickness of .045"; a .030" head gasket pushes CCP and corrected CR up a bit higher than my comfort zone; 9.62 and 202psi. With the heads off, I would have them drilled and fitted for manual compression releases. The 50mm T/B, if cheap, is worth the cost; your stock T/B is 46mm.