Re: Carb problems ?
Posted: 07 Sep 2020 09:52
Are you still riding 122 main jets with the big original 501 airfilter?
I guess with this filter (probably the best for this motor, although dificult to mount in a street frame) you should use a much smaller main jet. If I remebmer well the Excalibur/New York has a 76 main jet, X18 3rd notch, 264 BC, 38-42 idle jet. And I think the filterbox of the 501 customs is the same as Coguaro.
- I´m running a 501/PHBH28 with an original 350 filterbox with 130 main jet.
- another 501/PHBH28 with Polini pot filters with 115 main jet (with K+N Replikas bigger main jets)
(I use 268T and 50 slides, but that doesn´t seem to have too much influenco on my main jets)
If the problem of stunning only appears with a hot motor, try without the pickup tap(if you have a Ducati ignicion). To me it happened two times that the pickup was slowly starving. And it began like this, the pickup began to fail when getting hot.
norbert
I guess with this filter (probably the best for this motor, although dificult to mount in a street frame) you should use a much smaller main jet. If I remebmer well the Excalibur/New York has a 76 main jet, X18 3rd notch, 264 BC, 38-42 idle jet. And I think the filterbox of the 501 customs is the same as Coguaro.
- I´m running a 501/PHBH28 with an original 350 filterbox with 130 main jet.
- another 501/PHBH28 with Polini pot filters with 115 main jet (with K+N Replikas bigger main jets)
(I use 268T and 50 slides, but that doesn´t seem to have too much influenco on my main jets)
If the problem of stunning only appears with a hot motor, try without the pickup tap(if you have a Ducati ignicion). To me it happened two times that the pickup was slowly starving. And it began like this, the pickup began to fail when getting hot.
norbert