"Uh-uh. Respek Knuckles."
Join Date: Jun 2005
Bikes: '06 LeMond Versailles, '04 S&M Beringer, '03 Quamen Bowls, '68 Raleigh Grand Prix (converted to fixed gear)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If the threads are in reasonably good shape there's no real reason to have them chased, just make sure they're cleaned and regreased when you install the new BB. The question of facing is an easy one if the frame has never been prepped...yes, absolutely. The more prep you do yourself (removing old parts, cleaning out old grease and gunk), the less the shop is going to think of giving you a good deal and doing the work right on the spot.
On frames that have already been prepped properly the first time, I would just inspect for visible burring or scoring or wear and proceed as necessary (easier done on thick aluminum than skinny steel). Since steel is easy stuff to cut and a light run over it with the tool just to remove wear and ensure parallel surfaces won't *hurt* anything, go ahead and do it if it'll make you sleep better at night. Your frame and headset and peace of mind are probably worth the meager amount they'll charge if the frame is clean and ready to go before you even hand it to them.