Posted by Andrew in MI [172.68.206.37] on Sunday, March 11, 2018 at 13:44:57 :
Did compression test today on my 66 WM300, measures about 95 lbs on all but two cylinders number 2 and 6.
Number 2 reads 75 lbs but when I shoot oil in cylinder she comes back to 95 lbs; seems like rings for sure.
Number 6 reads 55 lbs and only comes back up to 75 lbs after shot of oil; seems like ring and valve problem here.
Got good oil pressure, after warming up there is about 35 to 40 lbs idling.
I think I want to keep the truck original, I like the 251 driving around town with compared to the 230 I had in the 53 PW.
I guess I need to find an engine shop that knows something about the Mopar flat head sixes.
Andrew
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