The Ford Barn - View Single Post - Specific questions re using a boring bar (Old school)

flatheadmurre · 12-10-2019, 05:29 PM

The boresize is your startingpoint...the pistons are made as much undersize as they need to be for clearance....compensating for a used piston is a gamble...don´t go much under the +.060.

How much you leave for honing depends on how good the bar is...check for taper and acuracy between cuts...in a perfect world handhoning you would like to do 10 strokes and be done...

You don´t need much for keeping the sleeve in place my rule is the lip should not be less then square...so depth of cut long atleast.

The scratch from toolbit returning shouldn´t be much on the last cut ( should be light enough so the bar doesn´t flex).

You need some clamps for the bar i have them here...yours for the shipping cost.

Murre

12-10-2019, 05:29 PM	#3
flatheadmurre Senior Member Join Date: Apr 2015 Location: Sweden Posts: 3,045	Re: Specific questions re using a boring bar (Old school) The boresize is your startingpoint...the pistons are made as much undersize as they need to be for clearance....compensating for a used piston is a gamble...don´t go much under the +.060. How much you leave for honing depends on how good the bar is...check for taper and acuracy between cuts...in a perfect world handhoning you would like to do 10 strokes and be done... You don´t need much for keeping the sleeve in place my rule is the lip should not be less then square...so depth of cut long atleast. The scratch from toolbit returning shouldn´t be much on the last cut ( should be light enough so the bar doesn´t flex). You need some clamps for the bar i have them here...yours for the shipping cost. Murre