Dap thanks.
On my Harley it's an '09 CVO with the 110" motor, the largest production motor Harley does right now. I think it's 1852cc?
On my bike the comp is the weakest around and most all have upgraded to three newer versions all still the captured ramp type like the older M3W's. The latest Harley comp has Torrington thrush bearings and it also has an oil direction plate inside the primary to direct flinging oil in the primary to flow into the comp. Even these are failing...
My point is that I have about 14k miles on my bike and I'm not easy on it and usually ride two up, we're not the lightest couple either.
My comp shows very little sign of wear at this point.
So in this case some wear out and some don't...
There is no rhyme or reason to those that last and those that fail.
I took it all apart to change out my trans drive sprocket from a 32t down to a 30t. This gives me about a 6.6% increase in torque throughout all my gears. I checked my rear aluminum sprocket and it's still looking good. It's a bit shiny, but not all chipped up or anywhere near needing replaced. It's typical on a Harley to 50k to 60k miles on the rear aluminum sprocket. The later touring models '07 and newer use a 1" (25mm) wide 14mm pitch belt, the same pitch as on the M3W.
My bike is very quiet in the primary area and keeping my fingers crossed, should last for quite some time more.
I think you're right, the packed grease is a means to keep the ramps lubed under the extreme pressure these comps are under.
