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Would you trust a motor that has been overheatEd?
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<blockquote data-quote="Johnny" data-source="post: 381340" data-attributes="member: 13599"><p>I bought a 1979 25hhp Johnson that had overheated to the point the</p><p>white paint on the power head turned gray.</p><p>Compression was 90 in both cylinders, complete new water pump, so I bought it.</p><p>5 years later, it still has 90 compression and runs good.</p><p></p><p>Second motor: 1988 35hp Chrysler Force.</p><p>Seller said it overheated to the point that the warning buzzer sounded.</p><p>He said he rebuilt the water pump - so I bought it. (after having good success with the Johnson)</p><p>Problem was not the water pump - it was the thermostat .....</p><p>He probably did 90% damaged to the motor.....</p><p>The remainder 10% was on my watch.</p><p>The motor is toast - 60 compression on top cylinder, zero (0) on the bottom.</p><p></p><p>So make SURE you know WHY the motor overheated...... it could be a couple of reasons.</p><p>If it has good compression, I would say use it . . .. just keep an eye on it until you are comfortable.</p><p>If it were mine, I would add a little more oil to the gas for a little more lubrication until</p><p>any glazed surfaces get back to normal.</p><p></p><p>Jus my dos centavos</p></blockquote><p></p>
[QUOTE="Johnny, post: 381340, member: 13599"] I bought a 1979 25hhp Johnson that had overheated to the point the white paint on the power head turned gray. Compression was 90 in both cylinders, complete new water pump, so I bought it. 5 years later, it still has 90 compression and runs good. Second motor: 1988 35hp Chrysler Force. Seller said it overheated to the point that the warning buzzer sounded. He said he rebuilt the water pump - so I bought it. (after having good success with the Johnson) Problem was not the water pump - it was the thermostat ..... He probably did 90% damaged to the motor..... The remainder 10% was on my watch. The motor is toast - 60 compression on top cylinder, zero (0) on the bottom. So make SURE you know WHY the motor overheated...... it could be a couple of reasons. If it has good compression, I would say use it . . .. just keep an eye on it until you are comfortable. If it were mine, I would add a little more oil to the gas for a little more lubrication until any glazed surfaces get back to normal. Jus my dos centavos [/QUOTE]
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Would you trust a motor that has been overheatEd?
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