B
brianthack
Guest
A few months ago I picked up a 91 R100GS project bike. It had sat outside for at least 2 years in coastal California, and almost all of the cast aluminum has suffered varying degrees of oxidation, from light to pretty heavy. The frame has a lot of rust coming through, but no significant pitting. The spokes are wasted. Miraculously, the body work is in good shape. And it fired up before I started dismantling.
I have stripped the bike down- removed motor, separated the tranny from it, removed the entire rear end, yadda yadda. I'm trying to establish an order of things for restoration, and looking for some input.
I'm pretty sure I'm going to have the cast parts soda blasted. Past threads seem pretty supportive of this method. Do I need to strip the crankcase all the way down, gut the tranny, etc, before doing this, or can I just mask/plug any openings?
The other thing I could use some advice on is cooling fin repair. Two fins are broken on the right-side head, and I don't have the fragments. Anybody been through this? About how much did this repair cost, and what kind of shop did you take it to? Also, to get technical about it, does anyone know how much cooling power is lost by the absence of a few fin fragments, and is this likely to damage/warp the head or valves?
Sorry for the glut of questions in one thread. I will post pictures shortly.
I have stripped the bike down- removed motor, separated the tranny from it, removed the entire rear end, yadda yadda. I'm trying to establish an order of things for restoration, and looking for some input.
I'm pretty sure I'm going to have the cast parts soda blasted. Past threads seem pretty supportive of this method. Do I need to strip the crankcase all the way down, gut the tranny, etc, before doing this, or can I just mask/plug any openings?
The other thing I could use some advice on is cooling fin repair. Two fins are broken on the right-side head, and I don't have the fragments. Anybody been through this? About how much did this repair cost, and what kind of shop did you take it to? Also, to get technical about it, does anyone know how much cooling power is lost by the absence of a few fin fragments, and is this likely to damage/warp the head or valves?
Sorry for the glut of questions in one thread. I will post pictures shortly.