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Recent content by tmack41

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    Replacing 1973 Johnson 65 hp powerhead with 1974 Johnson 70 hp.

    I do have a contact many hours away that can do the boring/honing. It all takes time and money. If I can't find a good replacement then I may have to go down that path. Thanks for your interest.
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    Replacing 1973 Johnson 65 hp powerhead with 1974 Johnson 70 hp.

    Located 30 miles south of Plattsburgh, NY
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    Replacing 1973 Johnson 65 hp powerhead with 1974 Johnson 70 hp.

    Yes, that is an option. Thx
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    Replacing 1973 Johnson 65 hp powerhead with 1974 Johnson 70 hp.

    Thanks for your help. The 65 hp has a bad upper cylinder and haven't been able to find a good replacement within a reasonable distance.
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    Replacing 1973 Johnson 65 hp powerhead with 1974 Johnson 70 hp.

    I did see that the inner and outer exhaust housings were changed. Thanks very much for the information.
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    Replacing 1973 Johnson 65 hp powerhead with 1974 Johnson 70 hp.

    It appears that the 70 hp is a direct bolt in. The carbs are the same type but the ignition systems may be different. I will appreciate any feed back. Thanks
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    Stuck 1969 Mercury 500 50 hp

    Recently purchased a 4-cylinder Mercury 500 that was stuck after years of sitting in storage. After taking the plugs out, which were not rusty, I soaked the cylinders with Seafoam Deep Creep for about a week. I then installed an automotive valve holder plug that screws into a spark plug hole to...
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    Are 1972 and 1973 Johnson 65 hp powerheads interchangeable?

    Thanks very much for the reply. You helped me decide to just fix what I have. I really appreciate it.
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    Are 1972 and 1973 Johnson 65 hp powerheads interchangeable?

    Thanks very much for the reply. I will see if I can figure it out.
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    Are 1972 and 1973 Johnson 65 hp powerheads interchangeable?

    My 1973 Johnson 65 hp has one bad cylinder (scored). Can I replace the powerhead with a 1972 Johnson 65 hp?
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    1999 Johnson 2 hp no spark.

    I have a manual for this motor that provides the test data for the various ignition components. All of the resistance values match. The charge coil target output is 180 volts but the measured output is only 100 volts. There is no spark when everything is connected and the motor is spun with an...
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    65 Johnson 18hp won't stay running

    Yes, that is the typical reason for failure and yes you can test them with a multimeter. See Youtube videos.
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    65 Johnson 18hp won't stay running

    Yes, there are several Youtube videos that are very helpful.
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    1976 Chrysler 35 hp coil issue

    My 1976 Chrysler 35 hp has the battery type ignition that uses two, 12 volt, externally mounted coils. One has cracks in the casing. It still produces a spark but runs very hot. Probably won't last much longer. These coils are very expensive to replace. Has anyone else had this problem and used...
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    Chrysler outboard paint

    Does anyone know of a source for Chrysler Frost White outboard paint or a substitute? Thanks
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