340 Static Compression Numbers and Test Procedure

nm9stheham said
Yes, that's the right area for the old pre-70 damper.....

There are holes like that in almost all of them for balance of the whole assembly, to make the part itself neutral balanced. That looks like a standard neutral balance damper.

I'll be honest... that old? No way the elastomer is going to work like it should as a damper. The rubber absolutely will have hardened up with 50+ years of time and unknown years of use and exposure to engine heat.

Thanks! I thought all those mailable weights would make that Such an uneven distribution it would have to be for an externally balanced set up. So this leaves me with trying to determine if the crank is cast or steel. I don’t know anyway to tell without pulling the pan down and inspecting. Does the nose of both cast and steel look the same??

The HB I ordered from summit has a weight I can add for external balance or run internally without.

The damage to the Key wasn’t done by me. That would be another meat head...