any ideas on a cheap water/meth setup or how to make??

thanks

Yessum... sit down grab a coffee.. put your reading glasses on..
RB Racing

now try and stay focused.. and not venture too far in your reading...

coffee, more like bottle of scotch and some beer chasers.

I'm assuming you want something with fine spray/mist, rather than the 'old as the hills' option of a windscreen washer bottle pumped into a solid brass nozzle, with a pinhole in it, that sprays a solid thin 'jet' of water - and back in teh day, we aimed them at either the 'needle' of an SU carb, or to hit one of the booster venturis - either option done to try and help break up/spread the water out. This was mostly on drawthroughs and arguably going through the compressor itself would help break it up.

About the cheapest 'really good' setup is going to set you back around the $100-130 range. Get a 12v shurflo pump (there's usually some on ebay around the $100 mark). There is a place (or at least there was) called 'spraying systems' - in brooklyn - they sell wholesale/direct agricultural spraying hardware. You get a #2 or #3 nozzle (I forget the exact part number, but they have sold them to people for WI over the years so would know the right ones - if not, let me know, I'll dig mine up, I've still got on in the shed) and an adapter to fit it inside (which is a fitting that lets you drill a hole into the intake plenum (or wherever you want) and attach the nozzle there - a bit like an EFI injector. you can also get tiny inline pressure relief valves. What they do is they only spring open and let water through when the pressure is over approx 5psi. what this will do is prevent a dribble of water getting constantly pulled through the system when there is vac in the manifold (eg part throttle cruising).

You'd need a reservoir (some of the camping type water containers - almost like a jerry can for water) can be used. Then you'd need something to trigger it - simplest thing is just a pressure switch. You can pay top dollar for an automotive one, or if you drive around your suburb the next time they have a hard rubbish collection, you can grab pressure switches out of washing machines. They trigger around 1 psi, and are used to turn on/off water refilling the machine when it is full. Some of them are even adjustable up to around 3-4psi.

include some hose and clamps and there you are. almost. You'd want to make a t piece and have some of the water returning to the tank and you could fit a restrictor in the line going to the nozzle, so that you could limit the water flow, if the overall rate was too high (of course that'll make it a set rate across the board more or less. Sophisticated setups can alter pump voltage or a bypass regulator to alter flow vs rpm and boost, but that's where the cost starts going up. About the only other thing, is you'd probably want to make the reservoir air tight, and run another hose from the intake manifold to the top of the reservoir (too high to pick up water) then if there was vac in the intake, there'd be vac in the reservoir, boost in the intake, boost in the reservoir, equalising pressures so the pump output would always be X psi above intake manifold pressure. If that makes sense

good tips Jmac..:)

good ol' jmac :)

Good link there. I've long been toying with the idea of building a kit.