SLANTY BLUES

Combustion
Chamber
63


that cannot be right,,
most stock slants have combustion chambers in the 56 to 58 cc's and you said
the head was milled .040
if the head was milled .040 I would expect to see chambers in the low 50's high 40's

also I have doubts on the .170 piston recession.
most stock slants have pistons around .180 down,
and here to again, you said the block was milled .040

either you have a stock head with oversized chambers and a block that
had a light clean up cut or you input data has errors.

how did you measure the combustion chamber cc's
how did you set the piston at Top Dead Center when you measured piston recession?
Or possibly the rods are bent or short,lol.
So,Al, you seem to be up on the slanty stuff. I am not. Could you estimate what you would expect the total chamber volume might be in this combo with the info provided, and therefore make it possible to estimate the Scr; I mean just an estimate?
If you estimate the Scr, and I estimate the ICA,and RatRod Al can remember what he set the hot-lash to; that could help to get a handle on WTH happened here, and why,and what the next move should be.