tonight i spent several hours at work putting on a 'super' oil pump, HD clutch springs, larger main jet, bar ends and a gripper seat cover. it was about 15-20 outside and a toasty 70-75 inside my shop. i snapped some pics real quick since i didn't get any from the bore kit install, and for anyone that might wanna do this stuff in the future. everything went on smooth and i didn't really have any problems getting it done, but i've done most of this stuff before so i kinda knew what i was doing.
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once i got the bike running i did have to adjust the clutch nut on the right side case cover, 1/2 turn in (right). i wouldn't suggest touching it before hand though, it can cause some headaches. the oil passage that gets drilled out is an aluminum insert and really easy to drill, took about a minute to drill and clean out the shards (xr50's inserts look like they're brass though).
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oh yeah using an impact to get the clutch nut off is a must unless you have a flywheel holder, but even a cordless impact (makita, snap-on, etc.) will work fine. the seat cover was a huge f*cking bitch for me, maybe b/c i'm such a perfectionist. next time i'd take that to the upholster (they'll do it cheap). i had to grind maybe 1/8" off of my billet fast50s throttle but that came out perfect, and i couldn't find any grips i liked more than the ones i had so i ended up cutting holes out of the ends.
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a few more... you can see how much larger the 52mm piston is compared to the stocker. i put everything back together but it turns out i'll be tearing it all down again on monday, i'm having the frame, swingarm, forks and bars all painted by a friend at the bodyshop (bling).
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Very nice write up and photos.... thanks
MFM

 

i also forgot to mention that i'd recommend putting these springs in by hand instead of using a screwdriver, they drop into the clutch assy pretty easily and then you gotta take it all apart again... and maybe it was just my bike but i couldn't get the phillips that hold the clutch assy off very easily, even w/ an impact hammer. i ended up using needle nose vice grips b/c i was afraid i'd strip the screws.
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