BannedCR500Riders.com

http://cr500riders.com/cgi/yabb/YaBB.pl ... 2445/10#10

I was slumming it over at the other site, came across this gem...

"You should be able to run the engine in an extreme lean condition cooling it with water vapor. Start it up rich (or normal mixture) then once its warm lean it way out and give it some water to keep cool. There is a lot of info on the lean burn 4-stroke that is just now going under development for economy reasons. It is controlled in a similar sense but only with fuel. Normal mixture start up no throttle body, rpms are controlled with fuel delivery only. Giving it a very lean burn. Just like a diesel."

1. Is this guy retarded?

2. WTF? They know their riding freekin' DIRTBIKES? Right?


After they figure this one out, perhaps a anti-gravity machine should top their list...

that is freaken retarded!!! yeah, lets ad 20-40lbs of junk to a dirtbike to get some better fuel economy, and it the process, rust out the bearings and blow the motor.

im definatly no expert on this topic but this is how i understand, from what ive read the water/methanol injection is used mainly on turbo applications (gas/deisel 4stroke) to reduce detonation, which in turn will give the motor more power. i give that dude on the other board a high five for using his brain to think of this idea, but i dont see that it would have any significant benefits what so ever in a cr500 application. in fact it would cause more headache and harm to the motor than its worth. you would have to purge the freaking motor after every single time you rode it, other wise the bearings and cylinder and rings would rust like a old boat anchor. not to mention you would need solenoids, hoses and some kind of a bottle to hold the fluid= not feasable. this is all nothing but my lame opinion and i may be way off on the real facts

I knew a guy on my old mitsu board who ran water injection to raise octane levels. It enabled him to run pump gas in a race gas application. This way he could fill up on pump gas and drive his racecar to and from work no problem, but the second he saw some punk ass in a really expensive car, he could flip a couple switches to turn on the h2o injection, raise the boost and even change timing curves and everything else through his engine management. Great addition to a turbo car application, 2 stroke dirt bike... definitly not!

I guess you could give the guy props for thinking outside the box though. I do like to see original ideas. I've been trying some different things on my own bike because I know there are plenty of things to do to a 500 or any motor for that matter that most people over look or don't think is worth the effort.

i did a search on water/meth injection and they were doing a test on a '08 cummins and it was working excellent. but thats a turbo deisel wich is a totally different. if you were to spray water through a 2 stroke you will have serious corosion issues that have to be dealt with, similiar to methanol. water injection by itself doesnt really gain you power from what i understand, but it aids in other issues that in turn give you power. i guess it raises compression, cools intake fuel temp, allows timing to be advanced more- which give more power. water injection aint like NO2, where you just spray it in and instant 20hp, atleast thats how i understand it

well i guess on a 300hp engine the water injection might be 20hp or more hp, but on a cr5 it wouldnt be even close

A conventional 4 stroke gasoline engine needs a throttle on it, period. OEM's have tried lean cruise calibrations in the past, the resulting emissions increases almost sent people at one particular automaker to jail. It's not happening anytime soon, unless we see a giant leap in catalyst technology.

The idea of water injection is fine on a nitrous or boosted combo, but is definitely without benefit on a N/A dirtbike....especially one that doesn't get operated at WFO from the minute it's started to the minute it's shut off.

I'm with Bob, it's just a dirt bike...

We used to use water injection systems on turbocharged applications in the late 80's.
Intercoolers work much better, no maintenance, no adding alcohol to keep em from freezing in the winter

Water injection in a 2 stroke...........You really don't want to wash the lube off the piston.

check this out. water/meth injection on '08 cummins. gained 46hp- 51 torque.

http://www.dieselworldmag.com/content/view/70/37/

I got alot of shit for putting nitrous on my 500 also....said it'll blow up for sure, flip over backwards, etc....

I wouldn't use it on a 2 smoke, but hey,,, let him give it a try.

Side note- my buddy has it on his Cummins. Turbo, injectors, Smarty, MP-8, water/ meth.... It friggen kills sports cars!

I have a manual urine injection system, it is engaged when I encounter terrain that makes me go . problem is it is external and most of it runs down my leg and missing the barrel. But the bonus is having to return to base camp for another Black Ice refill

Water injection into the COMBUSTION CHAMBER of a 4 stroke rocks...

Water injection into the CRANKCASE of a 2 stroke dosent..

Ever see the insides of a outboard? Rust everywhere...

I agree it is a no go on a 2 stroke but I did have a 79' dodge motorhome with a 440 engine that did have an adjustable water injection system consisting of a pump, driven by v belt and a regulator with in dash control and a nozzle mounted into the intake manifold near the carb. it used to work well and boost fuel milelage, never ran anything hotter than 89 oct. but i can see the use of a miniturized version on sportbikes and four stroke dual sports. The motorhome was scrapped and the motor was torn down for a project, and to our surprise at 338,000 miles it had hardly any carbon in the intakes or on the piston.
well a little carbon but nothing compared to a lot of engines i have seen. So maybye its worth reinventing just for engine longevity and a little more M.P.G.

The water needs to be mechanically injectd into the cyl directly. No matter how stupid the fuel metering for rpm sounds thats exactly how the mercedes engines are working, and very clean, and powerful. But ya its a pile of over engineered crap that in all practicality would be millions in R+D to properly do it. There is alot of more basic systems that will work in 2strokes and yes it does go in after the reed.

No doubt there is going to be added materials to the bikes in the next few years, but parts are always getting made lighter aswell.

I would rather forget completely about the water injection that is obviously adding crap to the bike, and chase the 16:1compression compatable E-85 fuel. With Canada restricting leaded gas for racing in jan '09, there is talk we will get E-85 here. as soon as that happens there is absolutely no way I'm running anyting else. and it will make alot more power too.

Roostius_Maximus wrote:.... and chase the 16:1compression compatable E-85 fuel.

Graves & MFDB are all over this one too..

Contact them for more info.

Danny is having alcohol compatible seals made.