The Ford Barn

Jack 34pu · 01-03-2011, 06:09 PM

As previous post stated, my 50 Merc block came up with a crack from cyl towards valve seat after being OK'd by magnaflux?? Machine shop says it will stitch it (drill and plug) and bore for sleeve. I'm in MD this week and stopped in to a machine shop looking for parts. Talked with owner who suggested I throw the block away and start over. But - he also said that if I go ahead with the cracked block, I should have the sleeve installed first and then stitch to the sleeve. He claims that boring for the sleeve will loosen the plugs if they are put in first. OK Walt, Ol Ron and other builders - what do you say?
Jack 34pu

01-03-2011, 06:09 PM	#1
Jack 34pu Senior Member Join Date: May 2010 Location: State College, PA Posts: 362	Stitching & sleeving an 8BA- sequence? As previous post stated, my 50 Merc block came up with a crack from cyl towards valve seat after being OK'd by magnaflux?? Machine shop says it will stitch it (drill and plug) and bore for sleeve. I'm in MD this week and stopped in to a machine shop looking for parts. Talked with owner who suggested I throw the block away and start over. But - he also said that if I go ahead with the cracked block, I should have the sleeve installed first and then stitch to the sleeve. He claims that boring for the sleeve will loosen the plugs if they are put in first. OK Walt, Ol Ron and other builders - what do you say? Jack 34pu