Re: New Motor Questions, 1950 Johnson SD-20

[equad99]

i got a wild hair a couple of years ago, and because it ran so well at low speed,and tended to overheat while doing that, i got busy in the machine shop, and put a mark 25 mercury water pump in mine. not an easy task, but well worth it. it will sputter at minimum speed for hours and wont overheat…its one of those deals that really left me wondering why johnson didnt put a water pump in them..it was that much improved….art b