Overhauled the stuffing box (along with just about everything else on the boat) which of course included new packing. Based on recommendations and reviews
(including an endorsement from MaineSail) I went with the Gore GFO packing.
Shaft 1 1/2", space between the shaft and ID of the packing nut 1/4" by measurement. Also all the info I find on the internet
specifies 1/4" packing so I bought 1/4" packing.
Diagonal cut 3 rings, loaded into the packing nut, loose hand tightened. When I launched the boat
I verified I was getting a few drips/minute at the dock
. Cranked the engine
and in gear
started about a drip every 5-10 seconds.
First time I ran the engine
I didn't check the temp on the shaft, ran the engine about 45 minutes first run, about double that the second run. Checked and still had drips before the second run but when I checked the temp it was too hot to hold my hand on it.
Next day I pulled out one of the three rings of packing. Left the nut loose enough to get a slow trickle and ran it again. At idle in reverse (still at the mooring) withing 10 minutes the nuts showed 147 F. Also the slow stream had slowed to an occasional drop without any change in the nut adjustment.
Next test is to pull the two remaining rings for inspection
(quickly before the boat
sinks) and if they look ok, put them back loosely and try again.
BUT, any other ideas or suggestions? How come running so hot?
I read a comment from another member
on another thread (that I can't currently find) that he had the same problem, put in a smaller size packing and problem solved
. I may try this but all information indicates 1/4" is the right size.