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Old 05-26-2015, 11:12 PM   #21 (permalink)
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Quote:
Originally Posted by Coyote X View Post
The trick is just to get a reliable method that is easy to duplicate and install on most cars without having to go to something like a megasquirt computer or some other extreme stuff.
I already did that. Proven to last, can inject as little or as much water as you want, uses very little power.
Details are on the water injection wiki.
Gas, diesel, cars trucks and you can buy almost all the parts off ebay and tractor supply.

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Old 06-13-2015, 06:17 AM   #22 (permalink)
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Quote:
Originally Posted by deejaaa View Post
reminds me of one i got from a neighbor in the 80's. it was built commercially but was old when he gave me it. the jar was very large and was hard finding a place to put it. was too young to care about measuring mileage but remembering him say it did and that was the reason i tried it.
this is a homemade unit and the operation is the same:
...
Maybe im being a bit pedantic, but I would at least get the input air for this setup through a filter of some kind. I would do this both to prevent clogging the metering valve as well as to prevent any chance of dirt making it into the engine. This is especially the case in dry dusty areas. The rest of the system is pretty unique- I like it!

My dad's system approached inducting water a different way. While yours seems to aim to have air and water mixed, my dad's setup aimed to output only water. The wick would soak up the water, and the vacuum would cause water to be pulled off the wick only so much as the needle valve would allow flow. The weakness of his setup would be needing to reset the needle valve every so often, or cleaning it once in awhile. Your setup doesnt have that issue as the metering valve controls air into the system instead of water out of the system.

I have read that excess levels of water can be hard on catalytic converters, though im not sure exactly how. I know water is one byproduct of converting hydrocarbons, so this doesnt make much sense to me.
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Old 01-03-2017, 04:10 PM   #23 (permalink)
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Awesome thread, thanks for all the info.

I also desire to do this on a modern TDI engine. I am able to read much of the data from the OBD2 port or by connecting to the canbus of the engine. And I can use a gasoline pump and gasoline injector to output the exact amount of water.

How much of a gain in MPG can be expected using this? (the newer cars have electric water pumps so in the worst case it should lower the load on that).

Also how can one stop the corrosion of the fuel pump and the injector. (or is it even an issue with EV14 injectors) I have been reading this for the past week, and some people add some kind of oil to stop corrosion (no idea what it is).
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Old 01-03-2017, 04:38 PM   #24 (permalink)
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Anyone I have seen doing this uses an agriculture spray pump and some sort of water mist spray nozzle.
None I have seen use gasoline fuel system parts.
I'm sure that there are people who do use gasoline fuel injection parts but I don't think it lasts very long.
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Old 01-03-2017, 04:40 PM   #25 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
Anyone I have seen doing this uses an agriculture spray pump and some sort of water mist spray nozzle.
None I have seen use gasoline fuel system parts.
I'm sure that there are people who do use gasoline fuel injection parts but I don't think it lasts very long.
Just read that the new gasoline engines are supposedly compatible with E85, which has corrosive water and alcohol inside. So I am pondering why not.

What water soluble oil/lubricant would not upset a diesel engine?
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Old 01-03-2017, 05:10 PM   #26 (permalink)
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So, what kind of mpg gain on turbo diesels can be expected?
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Old 01-03-2017, 07:50 PM   #27 (permalink)
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Quote:
Originally Posted by teoman View Post
And I can use a gasoline pump and gasoline injector to output the exact amount of water.
No and yes. Fuel pumps do not like water, but I've had good luck with a surflo style pump and a Ev-14 injector. Needs a soak in vinegar every few months but no other issues so far.
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Old 01-04-2017, 11:13 AM   #28 (permalink)
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Quote:
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So, what kind of mpg gain on turbo diesels can be expected?
Up to 6% on diesels only in warmer environments.
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1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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Old 01-04-2017, 11:16 AM   #29 (permalink)
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Is there andvantage in traffic situations or just cruising/accelerating? I suppose cooling the engine once in a while looking at the exhaust temp could relieve some load from the engine cooling system.
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Old 01-04-2017, 11:19 AM   #30 (permalink)
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I don't know anyone that tried it in stop and go. I don't think it's a good idea to use water injection at idle.

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1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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