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    Tach for 1977 Johnson 70

    Don't know if this is the right category to post this thread under, but anyhow here it is. Last year I purchased my second boat (first one with a motor over 6hp). There is no instrumentation of any sort and I would really like to put a tach in the dash. Anyhow to make a short story longer can...
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    16' Runabout Windshield Wiper

    Does anyone know where I can find a small wiper blade and motor to mount on a late '70s split window?
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    1977 Johnson 70 EL low speed problems

    Hi there, had a couple quick questions maybe someone would have a few ideas about. Last fall I got a new to me '77 Johnson 70 it works great except for one detail. Sometimes when I go to plane out ,within a minute or two from a cold start, and I throw the throttle down my motor seems like it...
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    1977 Johnson 70 water pump confusion

    Today I stated to replace the impeller on my Johnson 70. I purchased the only kit that I found on iboats.com, I believe that it was Sierra 18-3388. Anyhow while removing the w/p housing from the gear case just the housing came up without the impeller. When I was sold the motor the inspection...
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    Need help finding part for 1977 Johnson 70

    Hey there, well I had a little bit of a moment here earlier today when I went to change the lower unit oil. I have only changed it twice on this motor and was in a little bit of a rush. Anyhow, I thought that I was removing the bottom drain plug, wasn't thinking and started to loosen the screw...
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    I/O vs. Outboard Fuel Consumption

    I had a couple quick questions about I/Os vs. outboards. I've read up on outboard fuel consumption, and from my own observations, it seems that an outboard will burn approximately 10% of the rated HP in gallons per hour (GPH) at WOT. So does this hold true for an I/O? Or is the fuel consumption...
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    Transom repair/ random rebuild questions

    So I was watching a couple videos on youtube of guys doing transom replacement/rebuilds and was wondering where exactly do they get the pattern for the plywood? (Put maskingpaper on the glass and trim with knife/then transfer to cardboard/ to ply?) How difficult is it to perform a floor...
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    Hydrofoils

    Are the hyrdrofoils worth it? Are they model specific or are most of them universal?
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    Lund Tri-Hull

    Earlier this fall I purchased a Lund Shellstar tri-hull. Did some looking around on the net and have found very few pictures of these. Most of the ones I have seen look as though they never had an interior or were just designed for fishing. I bought the boat in Wisconsin not far from Shell Lake...
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    3 amp alternator 1977 Johnson 70

    I believe that my Johnson 70 has a 3 amp alternator. Is this enough current back into the battery to run a CD player, two speakers, the occasional spotlight, and nav lights?
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    Charging a deep cycle

    Hey there, so I recently purchased a battery charger Shumacher "Ship n' Shore" from Walmart. I have a 4 month old Durlast 24MD-DL battery. My charger has three options for charging standard, agm, and gel. I called the people at autozone that sold me the battery and they said that it is gel. So...
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    Camping aboard tri-hull

    So I've been pondering this over for a little while now. I have a 16' Lund tri-hull with ski/lounge seats a bimini, zip on windows, back, and front covers. I was thinking about maybe pulling an over-nighter on the boat on a smaller lake (i.e. not the Great Lakes). Some areas in my state have...
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    1977 Johnson 70

    Hi there! I am not the most experienced boater but am slowly learning. So to cut to the chase; the past few times that I have taken out my 15' Lund I back the trailer into the water until water intakes are below water. Then before I unhook the bowstrap I start the motor with the warm up lever...
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    Do I need to replace seals on lower-unit when water pump is changed

    Hi, I had a couple of quick questions for anybody willing to give it a shot. I have a 1977 70hp Johnson Model: 70EL77. The tell tale is weak and I had planned on replacing the water pump, impeller, and thermostat. I am going to purchase a thermostat and water pump kit on here. Now for my...
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