Water/Meth Injection

[blunt]

What would be the advantages, if any, of running a water/meth injection system on a N/A Diesel,  would it see any power gains i would be doing it on a 1Y (1.9d, mechanical pump)

[OM617]

You won't get more than 2whp. There are far better $/hp options available for a non-turbo engine, a turbo for example.

[jtanguay]

a water meth combination could net some considerable gains on a turbocharged engine, but i don't quite see how it would work on a non turbo.  i would be worried about atomization issues and water droplets being sucked in... wouldn't be good!

[moldyoldy]

I know the water injection systems were used back in the old days when cars still had carbs, the big selling point was that the steam vapor it created would "scrub" the cylinders/combustion chambers clean, so you wouldn't get the build up of crud that was inherent with the old leaded gas. I had a leaking head gasket in my old Ford Falcon once, and all the cylinders were gunked up, but the one that had the small leak in it was shiny new, so maybe the water injection thing really did have some merit. On a diesel however, I'd think twice....all those water separators and filters are there for a reason! ANY water introduced into a diesel engine could be a disaster, as the steam is expanding as the piston is trying to compress....result = blown head gasket. This was a major factor in the reliability problems that the old GM 5.7 diesels racked up. The 5.7s had very filtration, coupled with the fact that the US was just starting to make auto diesel fuel available at local stations and people didn't realize diesel is a completely different animal than gas.  I agree with some of the others, put your money into a turbo or something much safer, at least VW proved the turbos worked (and GM found out that water and diesel don't mix)

[OM617]

Water separators are to protect the injection system not the engine.

The steam will not harm the engine unless you inject far too much water in which case you will quench the flame front and loose power long before you blow the head gasket.

Pickup racers with the 5.9L Cummins engines are injecting up to 1 gallon of water in a 1/4mile race.

[jtanguay]

Water separators are to protect the injection system not the engine.

The steam will not harm the engine unless you inject far too much water in which case you will quench the flame front and loose power long before you blow the head gasket.

Pickup racers with the 5.9L Cummins engines are injecting up to 1 gallon of water in a 1/4mile race.

would really help keep the egt's down

[truckinwagen]

I just installed a water/meth injection system on my turbodiesel.
I put it pre-turbo because I couldn't afford a high pressure pump.
I got a mister nozzle for a garden sprayer for $8 and a windshield washer pump for $20.

it works great, I am sure that it would have similar effects for an N/A diesel as it would for a carbureted gas car.
go for it and let us know how it works.

[OM617]

I put it pre-turbo because I couldn't afford a high pressure pump.

You shouldn't use that at all. It will wear down the turbo blades, reduce its efficiency and make it unbalanced.

[shegel]

You won't get more than 2whp. There are far better $/hp options available for a non-turbo engine, a turbo for example.

2whp for less than 40 is worth it imo

[truckinwagen]

the water is very well atomized, so really it is little different than driving in the rain and the water that passes through the air filter(you know it does)
and as I got the turbo, intake and exhaust manifolds for $40 I will see how long it takes to fail without fretting.