Re: 1957 Johnson 35hp Getting Hot
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June 24, 2018 at 9:43 pm
#78394
I’m not sure if all the Big Twin/RD motors had this bleeder or drain hole going into the water jacket but it dumps water into the exhaust to help cool it. Might be time to pull the powerhead to see if it’s plugged. A broken piece of an old impeller could easily plug this hole.