Reply To: Pressurizing the Lower Unit

[Don]

Steven’s instruments makes some very nice gearcase pressure gages, but they aint cheap.  Nonetheless, this is a solid investment for anyone who is into this hobby.

You can also just buy parts from Stevens as well.  So, you could buy the threaded fitting from stevens, then use a different gage.  Just keep in mind that a bad gage set up introduces errors into your testing procedure.  You don’t want to confuse an actual gearcase leakage issue with a gage/tool  that has internal/hose leaks of its own.