No problem, glad i could help. I will pass your thanks on to the lads at SPR for the use of the dyno.
I had the over pressurising carb pump issue. Just replace the y connected with a t connector. Problem solved.
I spoke to Baines who reckoned that the needle valves can be not so good on the Keihins, can differ from set to set. Mine are off at the mo and was going to sell them but might try them again ? The only other thought would be reduce the flow from the pump ?
Incorrect. the Y connector forces fuel into the carb as the tank return is not the path of least resistance. When using the T connector you run the pump across the top of the T to the tank return, the 90 degree take off to the carbs. Much lower pressure, and I found it worked a treat. no more over pressurisation problems. buy a white plastic T from demon tweeks for £2, nothing to loose.
Erm no return on monster so not T or Y Reality is FCR's are very picky to pressure. As far as I remember best pressure is 3.2 psi and going over it by 0.1 will already overcome float bowls. To be honest FCR's work much better on SS as any petrol that is forced through will go back to tank. On monster it will dump it to engine or on floor.
I think if you're relying on the difference in flow between a 'Y' and a 'T' to 'depressurise' then you're in trouble and need to rethink the fuel circuit as it's obviously borderline - maybe a fuel pressure regulator is what you need? I have an electric in-the-tank pump (for EFI bike so high pressure) which feeds an 8mm loop from tank feed to tank return, this loop has a 'Y' (because it fit better) with a 6mm feed off to the carbs, passing through a 'T' (because I had one in the right size) which splits to the individual carbs and I've not had any over pressurisation yet as all the pressure & most of the flow just goes back to the tank. Mind you given the amount of fuel I'm using I don't think I could overfeed the carbs...
Getting back to tcip data wanted, i have another conundrum. I am fitting an ss motor with one of these ignitions but, not using the conventional kokusan pickups. i am using a crank position sensor set up to read the gap of two teeth on the cam pulley/gear. I have it running but cannot get the motor to time up correctly, also it refuses to rev cleanly. Does anyone have any info to do this or am i on my own?
Spike, good to hear you've got it built up, I'd be interested to see it one day. Don't know about the setup on that configuration but it might be worth contacting Brad Black in Australia; BikeBoy.org as he has done lots of different Ducati builds & projects?
I have narrowed my problem down. I am using the ducati 48-2 part of the program and cannot seem to get the firing point at or anywhere near 10deg btdc, it is floating very unsteadily at about 4 atdc. no amount of compensation wil adjust this? any ideas anyone? it seems to follow the advance curve after 2000 rpm but under that its all over the place.
