The Ford Barn

47COE · 08-22-2011, 12:11 PM

The copper head gasket failed at number 1 cylinder in my truck about 1300 miles after a rebuild.

Looking at it I saw that there are 2 water passages at the front of the block, one between #1 and #2 cylinders, and one in the middle of the head that are substantially larger than the corresponding holes in the head gasket.

It seemed to me that pressure building up at those restricted points could have contributed to the failure.

I see that there are 2 styles of gasket: small hole and large hole as can be seen here: http://www.autopartswarehouse.com/sh...er_deluxe.html

But talking to a couple of people here it seems that having small hole gaskets is preferred to send more water to the back of the engine.

So which should I go with: small hole or large hole gaskets. This is for my 47 COE, a working truck that is used to haul loads of a few tons now and then.

Tom

08-22-2011, 12:11 PM	#1
47COE Senior Member Join Date: Apr 2011 Location: Oregon Posts: 220	59A-B head gaskets The copper head gasket failed at number 1 cylinder in my truck about 1300 miles after a rebuild. Looking at it I saw that there are 2 water passages at the front of the block, one between #1 and #2 cylinders, and one in the middle of the head that are substantially larger than the corresponding holes in the head gasket. It seemed to me that pressure building up at those restricted points could have contributed to the failure. I see that there are 2 styles of gasket: small hole and large hole as can be seen here: http://www.autopartswarehouse.com/sh...er_deluxe.html But talking to a couple of people here it seems that having small hole gaskets is preferred to send more water to the back of the engine. So which should I go with: small hole or large hole gaskets. This is for my 47 COE, a working truck that is used to haul loads of a few tons now and then. Tom