Reply To: Head Bolt Replacement

[Bob Wight]

I bought some of those high dollar head bolts from Marine Engine a few years ago and what they sent me was just a Grade 5 bolt with a yellow zinc coating.   I sent them back and now all I use on any project is Grade 5 zinc plated bolts from the hardware store.    Never had any problem with that approach.   They are not torque to yield bolts like you’d find in the cylinder heads on your truck.

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."