In Reply to: weber 45 sidedraft suitable for street use posted by viet on April 26, 2000 at 02:50:56:
Before smog rules intervened, the TI setup on the BMW 4 cylinders (2000TI 4-door, 1800 TISA, etc.) used 45DCOE's with 38mm venturis, lumpy cam, higher compression, stock cast iron exhaust manifold (without thermal reactor stuff, similar to TII manifold), mechanical-only distributor.
I have a complete 2000TI motor, and I set up the 45DCOE's on my stock 2002 motor-- had to fiddle with the jetting, and it's still not quite right, but there's plenty of flexibility in the Weber design. You can swap out the main and aux venturis, all jets, accelerator pump, etc.
Incidentally, I can't get a smooth idle below 1800 RPM (then again I've only tried a few jet combinations)--any suggestions from sidedraft experts out there?