Re: Another Big Twin Observation….

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bobw

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Replies: 2448
Topics: 56
#81110

Bill,
In your previous post, I thought you were onto something when you found the loose exhaust cover screws and what looked to be water intrusion at the bottom of the exhaust cover/exhaust chamber. The inner exhaust baffle plate looked good, right?. I couldn’t see any sign of perforation in the plate.

Assume you used gasket sealer when installing new exhaust gaskets?

Applied gasket sealer to exhaust cover bolts?

Any sign of water seepage around the outside of the cylinder head gasket?

Unfortunately, might have to pull powerhead and check lower crank seal.

Those are some great looking motors. Hope you can track this down.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1957 Evinrude Fastwin 18
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“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."