Author Topic: Water/alcohol injection system. Give me your opinion.  (Read 12487 times)

Reply #30February 17, 2008, 08:09:46 am

shegel

  • Veteran

  • Offline
  • ***

  • 312
Water/alcohol injection system. Give me your opinion.
« Reply #30 on: February 17, 2008, 08:09:46 am »
Quote from: "hillfolk'r"



that must be a *** to add oil if you dont have a funnel
1986 Golf 1.6l non turbo (R.I.P.)
1999.5 jetta (bought with 122145)
1969 karmann ghia(diesel swap dream)(most likely going to be subaru powered)
1998 jetta tdi (parents car)

Reply #31February 17, 2008, 08:52:41 am

hillfolk'r

  • Veteran

  • Offline
  • ***

  • 1532
Water/alcohol injection system. Give me your opinion.
« Reply #31 on: February 17, 2008, 08:52:41 am »
Quote from: "gnavs"
so hillfolk, for your setup, is the spray pattern more of a jet or is it an atomized cone?  I've been researching the DIY water/meth injection systems and am under the assumption that a cone shaped spray pattern would be best.


it actually sprays out  the sides in 4 streams,i let them aim at the walls of the intake pipe to breakup the fluid more
its atomized somewhat,but since its being drawn into the turbo,that finishes the job nicely
Quote from: "shegel"
Quote from: "hillfolk'r"



that must be a *** to add oil if you dont have a funnel

the price you pay to go fast
besides.less oil in the pan,less windage,etc :lol:  :lol:  :lol:
yea i carry a funnel,but it doesnt really use more than a qt every 3k,and i have an open crankcase breather
actually,you can pull up on the boost tube slightly to give more room


Quote from: "MikkiJayne"
You don't even need a pump if you're cunning  :wink:

If you plumb a boost line in to your reservoir you can use that pressure to push the water in to the intake through the nozzle, since the intake isn't under pressure. The reservoir obviously has to be sealed so your boost doesn't escape!

You can use a solenoid and pressure switch to control the water flow, and the nozzle size will determine the flow rate relative to boost pressure.

A VW tuner in the UK thought this up a few years ago and it worked really well  8)

Mikki x

find a book called turbochargers by hugh mcinnes ,published by hp books
it has tons of turbo /water injection/ ic/install setups

my new setup(when i put on an ic ) will be like this,sorta
but ill use a metal can that can hold 40 psi of boost
run a boost reference line to the tank,but ill keep the washer pump,and put the jet after the ic
dont put water injection thru an ic,itll puddle out
since the boost line equalizes the psi in the tank,and boost is pushing against the jet,,when you hit the washer pump,you should get flow of fluid thru the jet
and from some of my turbo books ive been reading,it may give a little more power than putting it in preturbo

its fuzzy,i scanned it from the book,maybe you can see whats goin on though

this one is the "m+w water injection for dieselfarm tractors"
no wonder nothin runs like a deere

yea the blue washer fluid is best
my turbo book says "theres no advantage in running more than a 50-50 mix of water meth"
i noticed not much of a power increase  with straight water
washer fluid is best
if you use a switch like me remember to let off the mix  in between shifts because if you dont shift fast,it sort of runs away and wants to rev to the moon
i describe the water injection as a "controlled runaway"
Throttle cables ftw

Reply #32February 17, 2008, 04:39:10 pm

OM617

  • Guest
Water/alcohol injection system. Give me your opinion.
« Reply #32 on: February 17, 2008, 04:39:10 pm »
Water injection should always be done post turbo if you value your turbo's compressor wheel.

Reply #33February 18, 2008, 05:44:50 am

Gearhead

  • Junior

  • Offline
  • **

  • 87
Water/alcohol injection system. Give me your opinion.
« Reply #33 on: February 18, 2008, 05:44:50 am »
I always wondered if the water would erode the compressor wheel.  Seems like anything hitting an aluminum wheel spinning @ 80,000+ RPM might do a little damage.  How much is a replacement wheel?  The one for my 7.3 Powerstroke is around $99.
'82 2 Door 1.6N/A :( Rabbit  '85 Cabrio project