add up 3/16 + 3/16 + 3/16 is 9/16th of an inch ohh.. you got me. I mistook the 9/16ths as 9/12ths and simplified to 3/4. 3/4 > 9/16 by 3/16th. Nothing a little ZDDP in the oil won't fix.
YOU SAID: "the water temp slowly increases up to nearly 220 and pukes out some coolant" the cap does not puke out coolant because it was at 220F. It pukes out coolant because the PRESSURE of the cooling system was above the cap's set point.
Drilling holes in the t-stat means that something is either clogged or broken. 2 dead t-stats are not unheard of.. when its summer time you'll see if the motor keeps cool.
I read everything fine... now I have to go line bore some motors.. right Mr. Lincoln?? hahahahaha
Last edited by pfarber; 02/27/2015 3:05 PM.
