Author Topic: Water injection on a TD (Read 9406 times)

QuickTD · « **Reply #15 on:** October 07, 2004, 07:04:23 pm »

Quote

Who's Bruce...?

That would be me.

dieselpower · « **Reply #16 on:** October 07, 2004, 11:25:04 pm »

ok,
so would windsheild washer fluid add power then if it has methanol in it? im not worryed about oil breakdown because im rebuilding my engine soon anyway. the way i see it the water would do its evaporating thing and add more cylinder pressure so more torque while acting as a charge coolant so the methanol doesn't detonate. then the methanol would add power. and the detergents would just shorten the life of my engine.
i really want to get as much power out of this thing that i can except i don't have thousands of dollars to spend on it. so do you think the power gains would be worth the time and money to build such a system?
anyway thanks alot for the help so far

mark

QuickTD · « **Reply #17 on:** October 08, 2004, 06:30:21 am »

If you want me to tell you it'll all work out just fine, it ain't gonna happen.

Like any modification, it's an experiment. Be prepared to lose an engine over it and don't blame me for the loss. I've never tried this because I need my car for daily transportation. I have spoken to others that have used methanol and water injection with some success.

You want to be careful of the quantity injected. Start small. Too much will hydraulic lock the engine and bend the rods. At low RPM the risk of hydraulic lock is much greater due to the quantity per cycle being larger. Also watch out for "pooling" of the fluid in the intercooler and piping. If the engine gets a big gulp of liquid it will be destroyed. When injecting anything flammable into the intake of a diesel, make absolutely sure to have a fail safe method of turning it off that is within easy reach of the driver. The engine will run away if fuel is provided. I wouldn't recommend injecting anything ahead of the turbo. Droplets will erode the blades of the compressor. You need a pump capable of overcoming boost pressure to get it in downsteam of the turbo. Something that develops 50-60psi would be good. Make sure to install a check valve in the line to prevent boost pressure from pressurizing the tank when the pump is switched off. I would set it up to turn on only at WOT (switch on throttle linkage) and full boost (pressure switch) and only when manually armed by a dash mounted switch.

dieselpower · « **Reply #18 on:** October 08, 2004, 07:10:44 am »

ok thanks,
that was my new idea after reading about it. something like a 100 psi pump and injecting it into the bottom of my last intercooler tube at 10 psi boost, WOT, and have an arming switch. start with a 0.02 gpm injector and work my way up till it starts not being happy with it. my intercooler was also modified and mounted in a way that it is possible to drain it out. im talkin more of oil because my turbo is acting like a secondary oil pump. yes i kno what the dangers are of putting liquid into my engine but i am willing to take that risk. my only question was do you think it will add enough power to make up for the time involed in building and testing such a system? cuz i don't wanna spend the next week builing it to find that it makes not much of a difference at all. does anyone have a calulation that shows airflow into 1.6L TD engines? so i can figure out how much water is needed?
thanks for the help.

mark

hillfolk'r · « **Reply #19 on:** October 17, 2004, 04:47:53 pm »

i use it,,i made a dirtball setup that sprays in the intake,,the turbo books ive read,says thats ok,,put a momentary button on the shifter,got an ol washer bottle located in pass.side footwell routed to the hole in the int tube that normally held bov hose,ploayed w.some spray tips+old carb jets+stuff,,make it secure,remember to think in yer design,if it falls off u eat mr turbo,,,,i spray it in top gears, like 4th-5th,drops egt 150f or so easy,better systems use boost to = the psi,so you can spray it in compressed side of int,,mine works,and costs me a bottle of blue washer fluid every 500-750 up to 1k miles,,doesnt freeze,,has some meth in it for better cooling+power,,the poor mans naws

:evil:

Turbo DS · « **Reply #20 on:** October 23, 2004, 12:50:11 pm »

This is a good resource of parts:

http://www.alkycontrol.com/

hillfolk'r · « **Reply #21 on:** December 11, 2005, 10:07:48 am »

my setup was made fromstock vw parts,,and iinject water into the turbo inlet,,no need for hi psi pump,,,i use washer fluid,,been doin it for a few years,,,iknow it works,,,heres proof,,,,,drivin onrt 80 thru pa,,going up a hill,,and holding steady throttle to hold speed up hill,,,activate the water,,and iihave to let up on throttle,,cause itll accelerate,if i want to hold steadyspeed,,,,like,to hold a steadyspeed up a hill i may need like 8 psi boost,,,,but then i water inj. it,and let up on throttle,to hold speed,,itll drop to 5-6 psi,,,,,i used a a2 washer bottle,mounted onpass side floor,,routed line to intake,and used a carb jet from my old 73 suzuki 125,,and this is funny,,the jet is marked "125" also,,,,glued jet in hose securely,,cause it would suck (literaly),to injest a jet into the turbo,,,but no probs sofar,,when im really beating on it, i notice 150-200f reduction in egt,,,ihave it setupwith a button on the shifter,,,suppose you could activate it with a wot switch,,but i like mybutton,,the button scared the tire guy who installed new tires+alignment,,,he thought it was nos,,i just let him keep thinkin,,,,,,,

bvanetten · « **Reply #22 on:** December 11, 2005, 05:54:13 pm »

http://snowperformance.net/default.asp