What a pickle. I was pitting gear teeth, spalling main bearings, seizing pistons, wearing out my clutch bushing, and who knows what else.
I thought I had figured out the main bearing spalling. Drilling holes in the cam lobes would restore oil flow to the main bearings. Who would have thought that those holes in the cam lobes were crucial for main bearing longevity.
Seized pistons could be mitigated with a bit more running clearance. I never felt comfy with .0019” clearance to begin with. The 94mm Wiseco has a recommended clearance of .0025”, why should the 97mm be less. My wrist pin was always on the dry side when I opened it up for inspection. I don’t think it would be a good idea to add more clearance there, so more oil seemed like it would be beneficial.
But those pitted gear teeth. How was I gonna fix those? I am running a 4-speed gear set because it is beefier, but more oil would help too. Any increase in oil flow to the transmission would require more oil from the source. I needed a bigger pump, or a faster pump. If I could provide more oil flow, I could increase flow to all three circuits, or enlarge the transmission orifice. Maybe some of the extra oil would find it’s way to the gear teeth. I didn’t think it would hurt to have more oil flowing everywhere.
If I could increase oil flow enough, I could possibly add a fourth oil circuit to provide direct lubrication to the gear mesh, and still maintain adequate pressure and flow to the original three circuits.
I came up with two options, a High-Volume Oil Pump and a High-Speed Pump Drive. This old report provides the details on those pump mods.
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1680140612