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water injection questions
I am looking for a water injection kit for my car I am rebuilding, It has I holden 179 with a cr of around 8:1, stroked to 208, ported and cc'd head, yt rockers, acl race series dished pistons and a custom camtech cam in a 1200kg 1959 holden.
It has a small sc14 supercharger I will run at about 9psi with 2x2" SU carbs. I wanted to add water injection but dont want to spend over AU$350 I have read alot of different views, it seems there are 5 kinds- -Vacuum operated (no pump) -variable with a fairly low psi pump like the ones from edelbrock and holley. -boost activated, on/off high psi (like cooling mist) - the dearer variable high psi like aquamist. And last the direct port multiple ijector expensive fancy ones. Here is some stuff I have heard- 1. water should be variably injected at a ratio of 20 water and 80 fuel and atomizing is not important. 2. water should be atomized at above 60 psi to make a safe and effective mist wich will not work well if the pump slows when controlled by a variable control module What is crap, does anyone have any dyno comparisions or theorys? Should I inject the water into the inlet side of the supercharger or at the manifold? What would be a good low cost kit for the above car that will be driven to work, on trips and raced at the drags. do you need a different size jet to run straight water than if you are running a methanol mix? Any useful advice would be appreciated, Cheers |
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Lots of your answers are on this board or www.snowperformance.net/forums that can be found by reading and searching. I'm a newb to this stuff and I've already got a system up and running and making ~350hp on a 2.0L Suby without a special tune.
I would plumb in the water after your SC to save wear on the compressor. I think the Snow stage 1 kit would meet your needs and budget. As far as I know you don't need to change nozzle size when changing from water to meth mix. -Steve. |
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