07-28-2013, 12:23 PM #1
Synthetic lube 80W / 90 for pump bearing (in cone 1/3 rd deep) vs standard grease
Was browsing on youtube and came across a vid where the OEM cone was filled approx 1/3 synthetic lube 80W / 90 for pump bearing because the grease would just collect at one end of the cone.
07-28-2013, 12:52 PM #2
- Join Date
- May 2005
that's what I do when I take one apart
07-28-2013, 01:11 PM #3
2oz in the cone. I run Amsoil marine gear lube 75w.
07-28-2013, 06:18 PM #4
yes a sorta "Slurry" mix is what i do
07-30-2013, 12:52 PM #5
07-30-2013, 04:51 PM #6
If you have ever done this you would see 2 oz. is almost 1/3 of the nose cone...The whole deal with this mod is to bathe the bearings,not submerge them...you want just enough oil in there to coat them....if you fill the shit out of it you risk blowing out the front seal....especially when there is no need to fill it that much...
07-30-2013, 05:15 PM #7
Wow, Less than 1/3? The impression i got from other threads was roughly 1/2, while the other 1/2 served well enough for the pressure once hot.
07-30-2013, 05:23 PM #8
- Join Date
- May 2011
- West Texas
Use a 75w90 with color so you can tell a change from water intrusion.
I change mine with every impeller change/tweak.
Oh, and there's a minute friction loss, which equates to a teeny tiny (probably insignificant) speed gain--but hey, if the other guy isn't doing it, you have that on him.
Just be careful the next time you remove the cone as it will make a hell of a mess if you forget!
07-30-2013, 05:32 PM #9
FASTEST least rolling resistant lube u can use IMO:-$......HANDS DOWN;)............BET!!!!!!!!!!8-)
p.s. try this then spin your prop over by hand after a few times out VS grease or gear lube!
07-30-2013, 05:40 PM #10
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