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    1967 Mercruiser 120hp Backfiring.......

    Greetings I have a 1967 Mercruiser 120hp 2.5l 153cu that is backfiring through the carb between 2000-2400 rpms. Prior to it being torn apart and pressure tested, it ran perfect. The reason for testing it was due to water in the oil. That problem has been solved. However, not sure what to do...
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    Lower unit/outdrive testing....

    I have a silly question to ask. Is it ok to test a lower unit/outdrive with muffs and at the same time submerge it in a water tank? I believe this will allow me to rev my engine and at the same time create enough resistance on the prop to keep the motor from over reving. I need to use the...
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    Hole in Manifold Riser/Elbow....

    Greetings Upon reassemlby of my manifold and riser, I noticed a hole through the internal wall of the riser/elbow. The hole is closest to the manifold connection and not the exhaust bellow. I suspect this maybe the culprit to my milky oil. If not, can this riser/elbow still be used or should...
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    1967 mercury 50hp prop recommendation

    Greetings I have removed the current three blade prop from the lower unit of my newly aquired 1967 50ph Merc. However, there are no markings on it to tell me what I have. Does anyone have information on what it could be i.e., pitch or Mercury part # Thank you Holiday120
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    1966 Johnson Super Seahorse Electromatic 40hp

    Greetings I have recently bought another wonderful vintage/classic aluminum Starcraft boat with a 40hp Johnson Super Seahorse on the back. Would anyone have information/details on changing out the impeller? I would like to do it myself, but not sure about the electric shifting and removal of...
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