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Tractor Pulling Discussion Forum

Hey CHADS, Know anything about water injection?

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Red Puller

10-04-2004 15:34:27




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Built a water injection system for my 1206 diesel puller from instructions on another site. Using a SHUREFLOW 12v pump that puts out about 60lbs pressure. Having a discussion with other pullers as to effiency of this system when tractor is already building about 45lbs boost. Q1 Do you think that pump pressure is too low to overcome boost and still be able to atomize water? Any formulas for the amount of water per run/per second?

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buickanddeere

10-06-2004 08:30:24




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 Re: Hey CHADS, Know anything about water injection in reply to Red Puller, 10-04-2004 15:34:27  
Pressurize the water supply tank from the manifold. That way the water flow won't decrease as manifold pressure increases when needed most. Injecting water into the turbo intake really beats up the blades and takes airflow capacity away. There is some stronger industrial peroxide that higher oxygen content. Reacts with just about anything too.



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Redman

10-06-2004 19:22:17




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 Re: Hey CHADS, Know anything about water injection in reply to buickanddeere, 10-06-2004 08:30:24  
if you stay with say a 3lm,the water in the intake does not bother them.
the bigger ones it does,a T-18 will cut the fins off of the intake wheel.
i never thought of hooking the tank up to the boost,a pretty good idea there.



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Redman

10-05-2004 16:35:36




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 Re: Hey CHADS, Know anything about water injection in reply to Red Puller, 10-04-2004 15:34:27  
are you injecting in the cross over?if so,1 psi boost will cancell 1 psi water.
i will guess you have a rotary pump yet,and with that i would say about 1 quart in 30 seconds-actual water flow.
the water is mainly to keep the piston tops from turning liquid and save the turbo,but it also makes power but only a small amount.
in the old days we injected in the intake of the turbo with a windshield washer pump,and it also worked.

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ChadS

10-05-2004 09:03:51




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 Re: Hey CHADS, Know anything about water injection in reply to Red Puller, 10-04-2004 15:34:27  
Dont know much about them, I have not talked to anyone that has explained why they run it on their pullers. Not many of them around here have that on them, as far as the local pro stock tractors that run in this area. Where are you injecting the water in the manifold,, before the turbo, or at the port? Is it to help with detonation, or preigntion in the cyl, or keep it cooler? Have thought that if there was not enough fuel to match the amount of air coming in, the water may fill the gap, and build steam pressure in the cyl. Does your system have a regulator for the water? SEEK OUT REDMAN on this site, he may have some info on this. I dont know alot about how it works, or why it works, but aint scared of learing too! ChadS

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G-MAN

10-05-2004 13:52:13




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 Re: Hey CHADS, Know anything about water injection in reply to ChadS, 10-05-2004 09:03:51  
Water injection will improve performance and economy on nearly any engine, whether it's used for pulling or driving down the highway. The evaporation of the water when it's introduced into the intake air stream cools the intake charge and makes it more dense, resulting in being able to burn more fuel. The expansion of the remaining water vapor flashing to steam during combustion provides a little more cylinder pressure, in addition to the anti-detonation effects listed on the website link. John Deere "D"s were water-injected from the factory back in the day, although I can't remember what years that was done in. Water was taken from the cooling system and injected to help control detonation when running at high temps on the heavy fuels they were designed to burn. There are a lot of benefits to a good water-injection system.

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PULLER

10-05-2004 11:50:20




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 Re: Hey CHADS, Know anything about water injection in reply to ChadS, 10-05-2004 09:03:51  
Some info on water injection



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Red Puller

10-05-2004 20:23:07




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 Re: Hey CHADS, Know anything about water injection in reply to PULLER, 10-05-2004 11:50:20  
Thanks for the comments on my water system. I am still using a rotary pump by Schied and have a two stage system injecting into the crossover pipe. The system activates at different boost pressures thru the use of two Hobbs switches that operate 2 soleniod valves. I am currently only using about 16 oz. water in 30 seconds. Looks like I may need to get a higher pressure pump and bigger nozzles.



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Redman

10-06-2004 19:15:33




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 Re: Hey CHADS, Know anything about water injection in reply to Red Puller, 10-05-2004 20:23:07  
get out the northern hydralics book and look for a vickers or other brand of hydralic pump.
find one you like and order it,then call simpsons performance in MI for the nozzels and boost control.
his control never turns on all the way,so on the right night when the charger pushes just a bit harder you get the extra water you need.



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Chip

10-05-2004 21:13:55




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 Re: Hey CHADS, Know anything about water injection in reply to Red Puller, 10-05-2004 20:23:07  

The trick is to get the water into a fine mist or atomized (like a good diesel injector) 2500 psi. Add alcohol, peroxide to the water. Alcohol burns faster than diesel (faster piston speed) more rpm's Peroxide contains oxygen. If you get "CAUGHT" they ban you AND tractor 5 years, just a thought!!



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REDEYE

10-14-2004 19:38:21




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 Re: Hey CHADS, Know anything about water injection in reply to Chip, 10-05-2004 21:13:55  
that alchol/peroxide mix sounds interesting, what kind of a mix would you run...how much water % do you have to have to keep the detenation out. also have you ever tried this on a na diesel engine? and can alchol mix with the fuel? and just do water and peroxide injection? and as far as the alchol goes...ethyl, methyl, isopropal?



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