swapping injection for carbs.

[embee]

Originally Posted by janbros

it won't detect the injectors and that is a too big fault, system will shut itself down

Simulate the injectors? Power resistors?

Originally Posted by fastdruid

The point I was making was could you not replace the 'carb-fuel' pump with a 'curvy' vacuum operated one that won't overheat and doesn't restrict flow.

Druid

didn't thinck off that. Good idea, but I thinck it wouldn't cure it totaly. I'm sure I could use more liters out off the tank, but problem would remain with the last couple off liters : to much time between sucking air and fuel again. the high pressure fuel-pump needs constant flow of fuel. I'm already at my second Busa-pump, because I thinck the first one gave up having turned too much without fuel .

I'll see if I can get one quickly and try it out, 'cause I'm already searching ebay to see who has most parts I need to save on shipping costs .

[yorkie_chris]

IMO you need a loop and reservoir at intermediate pressure. Rather than complete flow and return cycling by HP pump.

This would reduce duty cycle of your low pressure fuel pump to point where it would not overheat.

Section of 25mm pipe maybe 2" long would be fine reservoir IMO, does not need huge volume. You could hide it down side of subframe or something.

if you create a loop, and air gets in the loop, it'll never get out. that's why the return has to go to the tank.

[yorkie_chris]

Create small reservoir like I say, bleed off small proportion of flow from your LP pump from top of this back to tank. Will get rid of air without exceeding capacity of your LP pump.

Originally Posted by embee

Might be talking blollocks, but is there a fundamental reason why you can't run the FI ignition system and simply do away with the injection side of things? Sure there'll be all sorts of fault codes thrown up, but I'm sure that wouldn't be a show stopper providing the ignition still worked. You'd need to transplant the TPS to the carbs for the ignition mapping, but there's one on the rear carb so creating some sort of adapter shouldn't be impossible if it goes the right way, or pick up off the linkage somehow (doubt the carb TPS is compatible with the FI ignition).

Originally Posted by embee

Simulate the injectors? Power resistors?

actually, I'm starting to like this idea a lot

looked into the manual, and appart from the injectors and TPS, everything else could stay. So if I just take out the injectors from the bodies and keep them on the loom, and if I can transfer the TPS (or maybe, just maybe if I'm very lucky if just works with the TPS from the carbs), it should work.

now off to ebay and buy some carb's

edit : forgot about the STVsensor/activator . will have a look first if I can just put the sensor directly on the actuator and leave it also in place.

[TSM]

Originally Posted by janbros

if you create a loop, and air gets in the loop, it'll never get out. that's why the return has to go to the tank.

from what ive been told that is correct and it also aids in cooling the injectors and pump by making sure fuel is always flowing around

have you thought of cutting the tank and changing its internal profile or lifting the tank at the front

Originally Posted by TSM

have you thought of cutting the tank and changing its internal profile or lifting the tank at the front

FI tanks are normaly high, with the pump at the bottom; my tank is long , with no flat spot at the bottom (ther are the airfilters in the way), it really is impossible

did some tests :

* STVA needs to be connected, but the electrical motor on it's own is enough, it doesn't need to function.

* STP needs to be connected, and in the valve closed postion with the STVA-motor detached from the throttlebodies - if not -> fault

* injector's don't need to be attached (at least not with just ignition switch on)

For the ignition to work, only the CKP, TPS, GPS and engine coolant are required.

So I'm gonna buy carb's , leave everything unnesascary in the loom (and that's a lot : IAT, STP, STVA, IAP, TO, and PAIR) and try to get the TPS from the carb's working. Should run like that.
Than I can have some time to test it. But in the end I'll swap everything for the curvy parts, but like this, I can wait for cheap parts, and not have to buy something ridiculously expensive because I'll need it

[TSM]

Originally Posted by janbros

did some tests :

* STVA needs to be connected, but the electrical motor on it's own is enough, it doesn't need to function.

* STP needs to be connected, and in the valve closed postion with the STVA-motor detached from the throttlebodies - if not -> fault

* injector's don't need to be attached (at least not with just ignition switch on)

For the ignition to work, only the CKP, TPS, GPS and engine coolant are required.

So I'm gonna buy carb's , leave everything unnesascary in the loom (and that's a lot : IAT, STP, STVA, IAP, TO, and PAIR) and try to get the TPS from the carb's working. Should run like that.
Than I can have some time to test it. But in the end I'll swap everything for the curvy parts, but like this, I can wait for cheap parts, and not have to buy something ridiculously expensive because I'll need it

this will not work, the system will generate an FI fault as there is no feedback, the tacho on clocks dont work with a carbed bike either

just get a carbed loom as its fairly cheep, you dont need clocks to check if things are working