Great writeup on Dynamic Compression

I like it. Takes guts. Do it soon so I can learn :)
If I push it, it will only be a little as I'm not up for much of any re-do LOL.
Do you measure cylinder pressure, or use leak down?
I'm not suggesting this is you at all but one could sure fool themselves with a leaky engine.


I didn't leak the engine yet this winter. I did it last spring and I had 2% or less on all the holes. I do run a PCV system with the ME Wagner PCV valve and pan evacs over that.

I've been needing to mount my new tach and pull the intake manifold. I want to use an antireversion plate I've had sitting there for better than a year, and to make it fit correctly I need to do some welding.

Once I get that done, I'll leak it again. And...I need to pull my distributor and unlock it and put a curve back in it. I think I can do better with a curve rather than locked out.

I may even venture into using a vacuum advance. Haven't used one since probably 1985 when I got out of the army but I think now, maybe, I can make one work.