So finally got the pool opened after diy liner install and found my pump (which was loud last year) is now very loud! Last weekend I spent a few hours determined to rebuild it. I failed! I got it apart but broke three long bolts that hold the motor case together - they were very rusty. The back bearing wasn't bad at all. I couldn't access the front bearing as the two little bolts that hold it behind the faceplate would not budge! They are also very rusty and now stripped - of course! I gave up and put it back together. It still runs but it's really loud!
Therefore, I'm looking into new motors. I inherited all this stuff about 5 years when I got the house and it appears everything is original since install in 1999. I have a hayward max-flow pump. Wet end looks pretty good - installed new seal when I had it apart this weekend. The motor is magnatek 1 hp with a SF of 1.0, 3450 rpm, threaded shaft, yada yada, all pretty standard... Surprisingly the best deals I see for motors are on Amazon. The one I'm looking at matches everything but says it has a SF of 1.1. Does this matter? I've read up a bit on here and it sounds like SF doesn't really matter and has more to do with marketing...
Any advice would be appreciated before I get this motor ordered.