Reply To: Compression for 58 Johnson 10 hp?

[Bob Wight]

My ’58 10hp runs about 85psi in both cylinders.   If yours has been sitting for some time, you might just have some stuck rings or maybe a bad head gasket.   I wouldn’t give up on yours just yet without some more investigation.   Post your questions here as you go – lots of folks will be glad to help out.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20
1982 Evinrude 25hp

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."