Reply To: 1961 Johnson 40 (RDSL-23) stops pumping water

[jdunham]

That’s OK Frank, the salt concern was warranted.
The pic of the head didnt come out well, but it is just as good looking inside. It is white so I believe to be original vs the replaced powerhead. From this I would infer that the rest of the original parts are likely OK inside. Just ugly on the outside.
Ill try pretty much anything you guys can think of. Still need to do Fleetwin’s leakdown test this evening.
The only thing I really don’t want to do is pull the exhaust cover and risk breaking those little 1/4-20 screws.

I’m just not sure what to dig into next.
Maybe it is time to get more serious about spending money on a gearcase and/or impeller housing.

really bad idea time, please feel free to stop me:
A gearcase from a 1956,57,58 35 or the 60s-70s 33 looks like it will bolt up. Not correctly but with the large rear bolt and the forward most 2 smaller bolts.
I happen to have 2 complete known good gearcases, impeller housings and impellers for those motors.
By eye the driveshaft and shift rod locations are the same. I already confirmed that the driveshafts are identical save key/pin for the impeller.
For tank testing only, I could bolt one on, connecting ONLY the supply water tube and just letting the return dump to the exhaust housing.
if the shift linkage wont engage ill abandon it, I want to make sure I can stop a runaway if it ever happens.