I've been thinking for a few years of trying a pumped alcohol/water injection system on the thingy but may soon trial it on the test bike.
I have fitted this setup to a fair number of cars in the past but never a bike. The carbs aren't ideally set up for a syphonal draw. The butterflies in the keihins could be used for control with miks a little more problematic due to not having butterflies. Slide control can be used but seems less than ideal. So I'm thinking a pumped system with a throttle position switch to trigger the pump.
Once again, this would be easier with the keihins than the miks as the miks have no linkage to add the plunger switch to. The throttle position switch would be difficult to work out here.
As stated before, I have run this in a number of cars in the past. Some didn't show any improvement to either power output or economy but some had large improvements. Particularly an XA falcon 250 cubic inch 6 we had which had sky high compression and pinged without the injection. {too many head shaves and a decked block} It went like stink.
At 10:1 compression {should actually be closer to 11:1 in both the thingy and the thingummy motor in the test bike} the CX motor should be a good candidate. Gains seem to be greater with higher compression. It also helps to prevent knock and pinging from high compression and aggressive ignition advance.
I'll likely go ahead with this when I can more consistently get out to the shed again though having trouble figuring out how to do the switching.
The system itself is fairly simple and would be basically cloned from the economist setup that was sold here many years ago and that I used to clone.
This would be a pumped rather than a syphonal system though with low mounted tank to prevent gravity feeding, likely utilising a windscreen washer pump. I had a similar setup on our commodore that picked up moderate power gains with it running to the twin throat weber fitted. AKA the baloney device. {made in Bologna} This from a later model falcon.
The switching would be the most difficult part and the part I've yet to figure with the miks. I think the keihins would be relatively easy to install switching to the throttle bellcrank on the left carb.
A possibility for injection point is through the intake runner rather than the carb itself. Some experimentation with injector tube {nozzle} size would be required to get the correct spray pattern with the amount of pressure delivered by the pump. Likely in the 1.5 mm range.
This would also allow a greater degree of ignition advance without pinging. Also for higher compression without pinging.
Anyone tried this? Thoughts?
I have fitted this setup to a fair number of cars in the past but never a bike. The carbs aren't ideally set up for a syphonal draw. The butterflies in the keihins could be used for control with miks a little more problematic due to not having butterflies. Slide control can be used but seems less than ideal. So I'm thinking a pumped system with a throttle position switch to trigger the pump.
Once again, this would be easier with the keihins than the miks as the miks have no linkage to add the plunger switch to. The throttle position switch would be difficult to work out here.
As stated before, I have run this in a number of cars in the past. Some didn't show any improvement to either power output or economy but some had large improvements. Particularly an XA falcon 250 cubic inch 6 we had which had sky high compression and pinged without the injection. {too many head shaves and a decked block} It went like stink.
At 10:1 compression {should actually be closer to 11:1 in both the thingy and the thingummy motor in the test bike} the CX motor should be a good candidate. Gains seem to be greater with higher compression. It also helps to prevent knock and pinging from high compression and aggressive ignition advance.
I'll likely go ahead with this when I can more consistently get out to the shed again though having trouble figuring out how to do the switching.
The system itself is fairly simple and would be basically cloned from the economist setup that was sold here many years ago and that I used to clone.
This would be a pumped rather than a syphonal system though with low mounted tank to prevent gravity feeding, likely utilising a windscreen washer pump. I had a similar setup on our commodore that picked up moderate power gains with it running to the twin throat weber fitted. AKA the baloney device. {made in Bologna} This from a later model falcon.
The switching would be the most difficult part and the part I've yet to figure with the miks. I think the keihins would be relatively easy to install switching to the throttle bellcrank on the left carb.
A possibility for injection point is through the intake runner rather than the carb itself. Some experimentation with injector tube {nozzle} size would be required to get the correct spray pattern with the amount of pressure delivered by the pump. Likely in the 1.5 mm range.
This would also allow a greater degree of ignition advance without pinging. Also for higher compression without pinging.
Anyone tried this? Thoughts?