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    Do these cylinders need rebore Pics

    [[/ATTACH]Think these cylinders need rebore? I think it was run with carb cleaner and the skirts started to gald. Top of bore looks good. Recently bought powerhead did not rn it myself. 2 cyl 55hp 1978. Had 150 compression.
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    Recommended Machine shop on East Coast near NC

    Rebuilding my second 55hp a 78 Johnson (first 79 runs great so far). This one I will rebore. The local machine shops are so so around here. Anybody have there own machine shop near NC? OR Nearby state. I want somebody who has top notch equipment and specializes in marine. Going for a precision...
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    Is a Tachometer for a 2-cylinder Johnson a 5 pulse application

    I need to get a tachometer replacement. The engine is a 79 Johnson 55hp. Is the 5 pulse right for this engine? Will any tach with a 5 pulse designation work? From what have been looking at a Teleflex has 4 cylinder 2pulse, 6cyl 3 pulse , 8cyl 4 pulse selection plus a 6 pulse and 5 pulse. Will...
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    Gearcase driveshaft tolerance / runout question How much is acceptable?

    I bought a used gearcase. From the input shaft number it is from a 89 45hp commercial. The drivehaft is bent. How much runout can there be and what is the best way to check it? Dial indicator?
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    Swapping gearcase from a commercial 50hp

    I have a 1979 Johnson 55hp Seahorse Been searching for info on a 50 hp commercial Johnson. Looking to interchange a gearcase. This gearcase in question is on *bay for a 1987 ish 50hp Johnson commercial engine (Supposedly , seller with little info). I was considering buying it for my 79 55hp...
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    Power tilt fluid ATF substitute

    Picked up a new OMC tilt kit for my 55hp. I have read ATF is OK to use instead of OMC trim fluid. Does it matter what type of ATF? Type F , Dexron 3 / 5 or is power steering fluid better? I don't want the seals to disagree down the road. Who knows for sure?
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    OMC Trim add on kit for 79 55hp part # 172833

    I have a 79 Johnson 55hp. Just rebuilt it and got it running right. Found a OMC tilt kit 172833 new in box. The unit is a motor and cylinder that bolts to the side of the transom bracket with 2 brackets. I know this is designed to lift the outboard at rest. What would happen if I tried to use it...
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    New connecting rod with hair crack in cap USE or NOT? Help

    Re: New connecting rod with hair crack in cap USE or NOT? Help Cove I know you are smart. Look what was written on the box! Wow! Looks good from here.HAHA on me
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    New connecting rod with hair crack in cap USE or NOT? Help

    Rebuilding my 1979 Johnson 55hp . Been waiting all week for the 2 connecting rods.Got them today. Ready to assembly but wait is this a crack! I used a pick to show the crack start and finish in the pics I noticed a hair crack in the connecting rod cap for 1 rod? Should I definitely not use it...
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    Wiring used tachometer

    Bought a used OMC Tachometer (172674) old style with needle for my 78 Johnson 55hp. Supposed to work 3 wires on back tach . Grey, black, purple Seems straightforward Black=ground, Purple=12+V, Grey=grey/yellow wire on terminal block for a quick test Hooked it up and needle seems to move...
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    Engine wiring harness cleaning and repair

    1978 Johnson 55hp. Appear to have an aftermarket wiring harness that looks to be in good shape except for the pins on the main connector / plug on the engine side. I was able to "disassemble" the plug remove the female cap and adhesive holding the pins in, remove them and clean all the pins...
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    Leaking shift shaft seal (replacement) without disassembly

    78 Johnson 55hp Water intrusion in gearbox. Pressure tested and found the shift shaft seal to have a leak. I can unscrew the shift rod and unbolt the shift cover to replace the o ring, gasket and shift seal Question I have is will I be able to re install the shift rod from the top without...
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    Fuel pump bladder 1998 4hp what does it do? Flooding out after sitting

    Bought a non running Evinrude 4hp 1998 Took apart carb cleaned it out good Found a orange cylinder shaped tube ( Bladder fuel pump # 0324661) on the fuel inlet side of carburetor bowl It has a small cut (puncture) in the side of it What is that Bladder supposed to do? This...
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    Block interchange 70's model ?

    Can anybody tell me if a 1978 Johnson 55hp block can be replaced by a 1976 (Found a used 1976)? Johnson or Evinrude matter? What year range will work will bolt up without modifications? I know that electonics vary but are any shared? Did a search and couldn't find specifics.
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    1978 johnson 55hp Huge HOLE in BLOCK Help!

    Re: 1978 johnson 55hp Huge HOLE in BLOCK Help! Another hole pic
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    1978 johnson 55hp Huge HOLE in BLOCK Help!

    Re: 1978 johnson 55hp Huge HOLE in BLOCK Help! Here she is in her holey glory! Ouch
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    1978 johnson 55hp Huge HOLE in BLOCK Help!

    I just got a used boat in a trade 16' aluminum Lowe . Has a 1978 Johnson 55hp model 55EL78S The engine wiring harness is completely gone/ rotted out. I ordered a new one already from CDI electronics. I did a compression test 130psi both cylinders. OK ? Seems low but at least even. Here is a...
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