copemech Posted February 17, 2011 Report Share Posted February 17, 2011 Good to see you on here mate. I am glad to see you posting up info and help for others. It is sometimes difficult to diagnose things long distance, but all input is appreciated, even if one can never be correct at all times! Keep it up man, as it seems there are a good lot of bright lads on here trying to pitch in. I for one would be interisted to see your views on the standard PHBL jetting for UK, and with what fuel, as this seems to vary a bit as compared to US pumpgas! Feel free to share comments on VHST, if you like? Cheers, MC Quote Link to comment Share on other sites More sharing options...
splatshop Posted February 19, 2011 Report Share Posted February 19, 2011 Hi Cope Thanks for the kind comments. To be honest I've hardly run the PHBL carburettor since 2002 when I bought my first Keihin PWK 28 Carb, as I found this far superior I've always changed the carb when I get a new bike. On the brief periods of me running the PHBL I've always pretty much run the carb as standard but with a larger pilot jet usually a 33 but on some of the bikes up to a 35. I use BP super unleaded petrol (97 octane) from a large busy petrol station. I have experimented with different needles and I prefer a slightly longer taper to make the mid range slightly richer but leave the top end the same or slightly weaker. The VHST, I've been using this for the last year or so, I find it offers very similar performance to the Keihin PWK in response, clean running, power and reliability. I have found it requires the float level to be set perfectly. Cheers Chris Quote Link to comment Share on other sites More sharing options...
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