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    1977 Johnson 140 Leave the thermostats and poppets out?

    Does anyone have actual IRL experience with this on a 4v x-flow? I spoke on the phone with a big distributor here in Florida that also happens to work on a lot of motors . The old timer OMC mechanic said that when ever he got a Central-South Florida x-flow 4v in that was having any major work...
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    Hole in the block. 77 J 140

    For your review is an image taken of the block of my 1977 Johnson 140. Had a seize on #1 and the sb side ran hotter than port.. Pulled her apart replaced piston #1 cleaned the cylinder wall of all left over aluminum with acid and a q-tip very carefully. Didn't pull that top water jacket cover...
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    Alternative to The diverter tubes in the head? 1977 Johnson 140.

    Hello Fellow Boaters, I want to share a tale of exuberance and sorrow. I have a 1979 Thunderbird Formula 18 O/B with the original 1977 Johnson 140 Seahorse. The engine turned over well and ran when I bought it And I got it for a very good ($0) price. I knew it would need a deck replacement...
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    1977 Johnson 140 something is off

    picked up the 18' Thunderbird Formula With a Johnson 140 on it for a song. only 216 hours on the motor for real. original owner for 35 years. garage kept for 30 years last used 7 years ago. Serviced religiously and the last service record is from 7 years ago. the guy moved had financial...
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