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Charper732
6/9/2017 8:38pm
6/9/2017 8:38pm
Edited Date/Time
6/12/2017 5:16pm
Just curious if it's possible to convert to E85, specifically on Newer KTM 450s without upping the injector or fuel pump size. Does anyone know what the duty cycle is on the stock injector at WOT?
I recently converted my car to E85 and holy hell did it make power
I recently converted my car to E85 and holy hell did it make power
The Shop
Stick to mtbe
I'm by no means a fuel expert, but I did work as a tech for 7 years and have seen some intense corrosion from oxygenated fuels...talking about exhaust valves seized to the guides.
I do know E85 has a longer shelf life than an oxygenated fuel. So for anyone that runs oxygenated fuels now, it would be no different as they are draining the system between uses
Invest in a tester from Summit Racing. Sometimes it's E80, and sometimes it E90 coming out of the pump.
https://www.youtube.com/watch?v=AnETtiRdTjU
And if your rig can run E10, it's designed to stand the effects of alcohol parts, rubber, and gasket wise, because they build in a tolerance for even E15.
It's still shit fuel, but anything with MTBE here is pretty much banned for sale.
Learn how to pickle an engine is what I tell people. You can run 100% alcohol of either kind in anything if you do that.
For racing applications, it works though where mileage isn't a concern.
Pit Row
After reading this, I can only conclude that people have been drinking e85
And before you say your bike is a race vehicle, read this.
https://www.arb.ca.gov/enf/advs/advs397.pdf
Especially the part where it defines Competition vehicles.
Now I'll finish my rambling with this. You don't need 85% ethanol content to start seeing the benefits. If you could run an e30 to e50 blend you'd be able to run plenty of timing and it would save you some overhead on fuel volume. Even on e65-ish my car shows no sign of knock on that same 34psi and 16 degrees timing.
To the original question, if you know the flow rate of the ktm injector at a given fuel pressure, know what the fuel pressure is (and static or rising) then you can determine how much fuel and horsepower you are capable of supporting. Fuel pump, you'd have to find liter per hour rating which shouldn't be too tough.
If you build the bike to take advantage of E85 (higher CR, properly designed fuel system, and calibrated properly) you would see some large benefits. As mentioned by some other users, this is done pretty commonly in the automotive world (more so with boosted engines, though). You'd see some pretty large benefits from lower charge temperatures due to evaporative cooling at a minimum. I'd strongly suggest bumping the compression ratio significantly if you do actually decide to move forward with this build.
There are some challenges associated with E85, though. A few are: the inconsistency of ethanol content at the pump, ethanol's affinity for water, fuel system material compatibility, and difficulties with cold start.
Anyway, the best way to figure out the flow rate of the stock injector is to see if you can cross reference the injector part number over to an automotive equivalent and find flow specs that way. If you can't find that, you can flow test the injector pretty easily on your own, or ship it off to be tested. Some places will do that work pretty cheap, and can sell you a larger injector if stock won't work.
Little do they know that only a few companies make fuel injectors for like 100 OEMs including cars, boats, trucks, etc etc etc.
These idiots didn't even know that Honda spark plugs in the red boxes labeled B9ES are just NGKs in a red box and cost double.
Post a reply to: Is anyone running on E85?