Burtzs block

[dave in australia]

Originally Posted by Terry Burtz, Calif

Brent,

Thanks for your post regarding adjudication and the use of new parts that appear to be original.

Like you, I also enjoy reading comments and seldom respond.

There are a lot of subtle variations on the cylinder block, and I chose to laser scan an original cylinder block that was not at the extremes of the variations.

The small lump at the rear of the cylinder block that provides wall thickness for the drilled hole used to lubricate the rear camshaft bearing is not documented on a Ford drawing, and there are many variations.

The bottom radius on the pad for the serial number can vary from small to large. The Ford drawing specifies a radius, but when the pad was lengthened, not all lengthened pads have a radius that agrees with the drawing.

My thoughts are that the pattern makers were instructed to make a change in the field instead of at the pattern shop, and that is why there are variations.

And there is also differences between USA castings and Canadian Windsor plant castings. I have approximately thirty engines in my back shed, and I don't think there would be three or four that would be the same. When you start to look, there are a lot of small differences.