Retrogrouch in Training
Join Date: Sep 2004
Location: Knee-deep in the day-to-day
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I tend to ride hard and put away wet.
The BB unit you got should treat you very nicely. I've got a few of those that have been in truly disgusting conditions with no special treatment and they still spin smooth and quiet many thousands of miles later.
I do think it's worth drilling a hole in your BB shell. Looking at the foul puddle that comes out of mine, I hate to think of that festering in my frame. I do have one frame that had no hole until just recently and when I pulled the BB out of there, there was quite a bit of surface rust (hopefully no deeper, but I need to get in there with some rust reformer now) and other nastiness.
Apart from that, keep your chain nice and lubed unless it's corrosion resistant. I'm of the opinion that most wet lubes are the same, gross, sticky, and effective at what they're for. Personally, getting a nice nickel-plated or stainless steel chain is well worth the money not having to sweat lubrication as much. As a side-benefit they tend to stretch less. Many people love Wipperman chains.
Apart from that, it's nice to just sweep the crud out of the moving parts as much as you're comfortable with, especially the drivetrain interfaces where it will cause accelerated wear. You can use a chunk of mtb tube as a headset seal. Cut it so it's like a 2"-or-so wide rubber band, take the fork out so you can get it around head tube, put everything back together and then slide it down so that it covers from the top of the fork to the head tube. Basically the crown race/lower cup interface should be completely covered to keep the smut out. You may want to do likewise with the upper cup/race interface, but generally I find that it sheds water just fine and it's just sand and crap from down below that's a problem.