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@Fatzbullet Agreed! So, I left the lower unit on the engine for these tests. Looking at the tolerance stack-up of this assembly I'm amazed it seals at all.
UPDATE:
I did a vacuum test with he help of a buddy and his Mityvac on Friday. Here's what we did and what we found:
Setup:
1. Removed the spark plugs (safety first)
2. Connected vacuum pump to gear case upper port using the fill pump adapter. We first verified the connection to the adapter...
Yeah, I should have just said side-to-side play. My suspicions are:
1) my SST prop (older heavy OMC painted Stainless) which has a slight wobble at the hub is likely out of balance and toasted the rear needle bearing. Basically the front the prop hub wobbles opposite to the rear of the hub...
1999 Johnson 130, 20' leg (J130PLEED)
While changing the prop I noticed a very slight amount of run out on the prop shaft - I haven't put a dial gauge on it yet but, I will. So, if I try to move the prop shaft side-to-side or up/down I can feel it hit the limit of its run out but not see it...
