The Ford Barn

Cape Codder · 07-27-2012, 10:45 AM

Having just received a HC head I was wondering if anyone has had to have their new head resurfaced? How could I check it to make sure it was ground flat?
Thanks for your time.
Joe Grobleski

Jim Brierley · 07-27-2012, 10:56 AM

A precision machinist ruler long enough to cover the full length of the head, and a set of feeler gauges will tell you if it is flat. Check it one way, then flip the ruler over (one edge to the other) as a check on the straightness of the ruler. The head and block should be within .006" of perfectly flat.

columbiA · 07-27-2012, 11:50 PM

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If the gasket surfaces are perfecly clean,you could slip the head in place & see what gap you have with a feeler guage This would not tell you if its the head or block that is out of spec,but if it is out it would most likely be the head.

07-27-2012, 10:45 AM	#1
Cape Codder Senior Member Join Date: May 2010 Posts: 1,262	High Compression Head Having just received a HC head I was wondering if anyone has had to have their new head resurfaced? How could I check it to make sure it was ground flat? Thanks for your time. Joe Grobleski

07-27-2012, 10:56 AM	#2
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,096	Re: High Compression Head A precision machinist ruler long enough to cover the full length of the head, and a set of feeler gauges will tell you if it is flat. Check it one way, then flip the ruler over (one edge to the other) as a check on the straightness of the ruler. The head and block should be within .006" of perfectly flat.

07-27-2012, 11:50 PM	#3
columbiA Senior Member Join Date: Nov 2011 Location: B.C. Canada Posts: 1,746	Re: High Compression Head Sponsored Links (Register now to hide all advertisements) If the gasket surfaces are perfecly clean,you could slip the head in place & see what gap you have with a feeler guage This would not tell you if its the head or block that is out of spec,but if it is out it would most likely be the head.