Join Date: Aug 2008
Location: Christchurch, NZ, New Zealand
Fester, I'm sure you've well solved these issues, but to offer an answer for those who may have the same questions:
1) Yes, you can convert to the later arrangement. Ive done so. You'll need a new clutch side engine cover to do so, and the later basket and hub (now alloy) and a push rod, etc.
2) Yes, you can also ventilate the early covers. The racing 851s had the best examples of factory ventilated covers. Pic 1 is a pic I found, looks great but factory? Dunno. Pic 2 is mine. Slightly ventilated.
Hope this helps. See my bike now; thread is: 1989 900ss Performance rebuild. (or something like that)
Hamish, ex Britten Motorcycle Company
'89 900SS now Superdue: '95 cases, close ratio box, XX9R Ohlins R&T front end, Monoblocs, Speedymoto Upper Triple, Apex Clip-ons, 5 spoke Marchesinis, Bespoke discs, Hel Lines, Carbon/Composite tank with c/f filler, carbon Supermono fairing, dual projector beam headlights, billet rearsets, carbon 955 Corsa tail, 944cc, Lightweight flywheel/Barnett clutch, Aluminium Plates, DP Cams, ported heads, 41mm split FCRs with 90mm CNC velocity stacks, 45mm Spaghetti pipes with carbon cans, Ignitech, Dyna Coils, Magnecor wires, Ohlins shock, 1000DS swingarm. Lots of Carbon and Titanium. EVERYTHING else is custom. Just about finished...
Bought May '11.
07 Aprilia Tuono: Sold. '06 GSX-R1000: Full Ohlins: Sold. (written off same day by MadMartin!) '03 Monster 620ie: Sold. '00 Aprilia Mille R: Sold. (Gone but not forgotten) Several 750 Pasos, ZZR-1100, VFR750 and other small Hondas etc