The exhaust manifold maintenance I was referring to is to remove them, and reinstall them so they stay sealed at the head. All four of mine were showing developing leaks. Was mostly due to failed gaskets over time. Small leaks will eventually become big leaks. So they were removed, surfaces checked, dry sections cleaned of all corrosion (area where the pain burns off), repainted dry section with high temp paint, and reinstalled.
Mechanic did not mention any other service they might ever require.
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Thread: Detroit Diesels
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Re: Detroit Diesels
1966 34c
1982 46 HP
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Re: Detroit Diesels
Neil,
Thanks for that info on the 471N manifolds. I will take a better look when I get over there today or tomorrow. Have you serviced (or removed) yours? I am guessing (hoping) if they are water cooled that they are NOT raw water cooled.
Years ago, on my old gasoline inboards, I'd toss those risers and manifolds every 5 years or plan to replace the engine soon after if I didn't replace them.
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08-04-2022 10:01 AM #13Senior Member
- Join Date
- Sep 2021
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- 91
Re: Detroit Diesels
Doing this right now actually.
Screen Shot 2022-08-04 at 9.48.55 AM.jpg.....
David Moore
1973 Hatteras 58 Yacht Fisherman
Whimsy
Charleston, SC.