Getting the bikes dissasembeled was easy, getting it back together is going to take a while.
2/17/07: More than a year later, everything is powder coated:
10/11/07: An update, actually started to put the bike back together! The transmission needs to be re-sealed, which is going to be the biggest hang-up right now:
For the engine, the pistons got new rings, damaged fins on the heads were repaired as well as installed new exhaust valves/guides and minor port and polish, clutch components replaced, new rear main seal and oil pump o-ring installed.
The pictures below show before and after soda blasting various parts. Checked the fork tubes on v-blocks and were in tighter tolerance than what you would likely get new from forks by frank, this was a surprise considering how messed up the rest of the bike has been. Forks were rebuilt. Went with BMW heavy-duty springs.
Wheels were disassembled, hubs soda blasted, new bearings & set preload, new SS spokes and Akront 18"x2.5" rims for front and rear (this is not going to be a stock R90S):
Trig trues the front wheel:
Starter cover and air box cover prior to soda blasting:
Starter cover and air box after soda blasting and the completed front wheel pictured below.
New bearings & seals in the swing-arm. The drive shaft that came in the bike was toast so that was replaced with a used drive shaft. The final drive was also shot. It was cheaper to buy a good used final drive than re-new the original:
12/2/07: Re-sealing the trans, Ed Korn tool in action:
New seal in place:
Final Drive re-seal, more Ed Korn tools in action:
Re-building the carbs. This one had some water in it:
Soda blasted carb body comparison:
Getting Close:
Bodywork Painted:
1975 BMW R90S
