thought this might be helpful for new guys getting into drag racing with the first gen 12R
the purpose of the following mod is to get oil from the trans shaft to the clutch pack. Muzzy has a kit that modifies a sleeve and the hub (hard to copy without maching equipment) or you can drill the hub and do the flat spot trick or drill the pusher(with EDM).
I had a Muzzy modified sleeve and hub in my bike when i got it. I copied the drill pattern in the hub where the clutch pack goes for dads hub, and did a flat spot to the pusher. its very hard to copy the machining by the sleeve/hub nut on the hub. hes running an MTC lock up so his pusher is different than the stock ones, so ill include a pic of how to modify a stock one too







dont grind too much off or you will have too much oil in the clutch robbing power, and it will lower the oil pressure. start with a small amount and work up untill you no longer have dry clutchs.

I haven't ever taken a clutch apart, so don't flame me. But I am going to be attempting this sometime with my new 12r in the near future. I'm trying to understand the first and second pic. The way the holes are in the hub now, do they go 3 holes/ 2 holes/ 3 holes / 2 holes all the way around? The ones with 3 holes you drill as marked, and the ones with 2 holes drill as marked? Just curious as to how many "sets" of holes their were, and if it mattered on what side of the hub they were on.

Also, when grinding the stock pusher, does it matter what side you grind down? I assume it doesn't.

yes they go 2 holes, 3 holes, 2 holes, 3 holes all the way around, just count the notches inbetween to get the spacing, mark them with a sharpie before you go at it.
everything spins, so no it doesnt matter.