CLASS RACER FORUM - View Single Post

Alan Warman · 11-28-2007, 12:38 AM

How much crush should a head gasket have.I am using a Fel-Pro head gasket for my Oldsmobile.The book says it should be .040 but when I measured it I come up with .045.So I thought when I torqued the head down to spec it would be .040.But it wasn't, it was .045. So I checked the bolt length, and thread engagement.I chased all the threads with a bottoming tap and reassembled and checked again, the same thing .045.So what am I doing wrong.

11-28-2007, 12:38 AM	#1
Alan Warman Member Join Date: May 2002 Location: San Angelo Tx Posts: 231 Likes: 0 Liked 0 Times in 0 Posts	Head Gasket Question How much crush should a head gasket have.I am using a Fel-Pro head gasket for my Oldsmobile.The book says it should be .040 but when I measured it I come up with .045.So I thought when I torqued the head down to spec it would be .040.But it wasn't, it was .045. So I checked the bolt length, and thread engagement.I chased all the threads with a bottoming tap and reassembled and checked again, the same thing .045.So what am I doing wrong. __________________ Alan Warman STK 4107