Diamond block

[Walt Dupont--Me.]

I just spotted something I've never noticed before. I'm building a 42 engine with the raised intake surface. After getting it baked and short peened I noticed a diamond down in the valve spring valley in the center in that caverty in the center that's always filled with gunk. It has a diamond and a seven cast in braille. It had already had the sleeves removed and Ford .0825 pistons in it. I bored it another .045 to 3-3/16. By sticking my finger down one of those big water holes and the cyl, it feel a little thicker than others i've bore these to. Maybe not. At least this gives me bragging rights, right? Walt

[f1builder]

hey walt, real interesting. do you happen to have a picture of that you could post? seems like i might have seen one like that before quite a while back but i am not certain. george.

[Peterooster]

Most 4 bangers have a diamond cast in the front. Pete

[Walt Dupont--Me.]

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Originally Posted by Peterooster

Most 4 bangers have a diamond cast in the front. Pete

Yea Pete, I have a diamond B engine in my 31 Model A. I don't know if I remember of seeing a diamond on a flathead. If I did I probably didn't pay attention. Walt