Quote:

Not quite.
As the stroke is reduced, or the rod is lengthened, or both, piston motion around TDC slows down. Piston motion around BDC speeds up.

Longer stroke, shorter rod etc. = reverse.



Yes and no... I had to go out and visualize this just now and my 4 inch stroke and 3.31 stroke short blocks both with std SB rods, the piston motion is slower at BDC and TDC on the short stroke (within 20*) and they are the same travel or piston speed weather at TDC or BDC. I am gonna mock up the 4 inch motor with a 6.25 long rod since it has chevy journals and check what just rod length does to the motion, it is nice having many motors in different stages around the shop.

I am not causing global warming, I am just trying to hold off a impending Ice Age!