Recent content by andyj

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    engine temp reading cool

    as an update if you read my last question - I changed a thermostat out on a 1989 Merc 350 Mag. Now it idles at the correct temperature, when under way or WOT the gauge drops and reads 100. as soon as I slow down and idle again, it goes back to 145. Any suggestions to get it to hold constant?
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    merc 350 mag temperature variation

    I have twin 350 mags in a 27 foot SR pachanga. Port engine, while running fine @ 4000K the temperature gauge gradually swings from 100 - 200 degrees every 15 - 30 seconds or so. exhaust plumes look even - no overheating sirens. At Idle speed it holds true at about 145. Does this sound...
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