tjcarr

I recently purchased a 1998 315R with the Dellorto PHBH carburetor. The bike was pretty much a stock unit and I've been updating over the past year. She now runs well with a new clutch, rebuilt F&R suspension, recent piston, good gas, a fresh plug and a clean air filter. A new reed is on the short list. No performance complaints however I hear that a carburetor upgrade will take the bike from good to better. There are several opinions scattered across the forum as to which is the best upgrade. Some offer the later PHBL as the best choice while OKO, Keilin and Mikuni are also tossed about. So my question is three-fold: 1. Was the PHBH never a really a good carburetor and should be replaced ? 2. If the PHBH should be replaced, will the PHBL be sufficient or is the OKO, Keilin or Mikuni the best investment of time and money ? 3. Will there be a noticeable return for the upgrade effort ? Thanks in advance for your thoughts and comments, tj carr