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richie 2 · 06-29-2010, 10:47 AM

they can split when ball sizing or burnishing a guide liner. the ball size can be too large for the liner too expand. always used to sneek up on the size. it should'nt happen if a solid guide is used. either way i was'nt conortable with that situation.

06-29-2010, 10:47 AM	#3
richie 2 Senior Member Join Date: Feb 2009 Posts: 971 Likes: 426 Liked 205 Times in 93 Posts	Re: Cracked guide boss in Aluminum head they can split when ball sizing or burnishing a guide liner. the ball size can be too large for the liner too expand. always used to sneek up on the size. it should'nt happen if a solid guide is used. either way i was'nt conortable with that situation. Last edited by richie 2; 06-29-2010 at 12:30 PM.