mobythevan Posted March 4, 2006 Share Posted March 4, 2006 I will be drilling and tapping a 3/8 NPT hole right before my TB today for an air temp sensor. It would be real easy while everything is apart to drill and tap a second for water injection. I plan to run that shortly, is a 3/8 NPT hole OK, will that let me get a nozzle in there? And is right before the TB OK? I will be running a water/methanol mixture. I could search up some of this, but if you help me out on this one I can get everything finished today. Quote Link to comment Share on other sites More sharing options...
Supra510 Posted March 4, 2006 Share Posted March 4, 2006 Not to be Captain obvious but it will work if the nozzle/jet has 3/8 npt threads. My Aquamist jets have a metric thread. Right before the throttle body is fine. I've had mine there since I installed the system (6 years) with no issues. Right before the turbo inlet is the no- no as the water can pit the compressor blades over time. Pic of my location for the jet. http://memimage.cardomain.net/member_images/2/web/674000-674999/674663_44_full.jpg Quote Link to comment Share on other sites More sharing options...
mobythevan Posted March 6, 2006 Author Share Posted March 6, 2006 I don't have a water injection kit yet, i just wanted to pop in a fitting while everything was apart and I only have a 3/8npt tap. SO I went ahead and added it. It is plugged for now and if I don't end up needing it, no big deal. Thanks Quote Link to comment Share on other sites More sharing options...
GrayZee Posted March 9, 2006 Share Posted March 9, 2006 I drilled a hole in the pipe, then I bought a 3/8 pipe coupling.. cut it in half, and welded it on. I found it to be alot easier. Quote Link to comment Share on other sites More sharing options...
mobythevan Posted March 13, 2006 Author Share Posted March 13, 2006 This is an aluminum elbow, so welding was out for me. No I need to get the injection kit/pump on order. Quote Link to comment Share on other sites More sharing options...
Bernardd Posted March 14, 2006 Share Posted March 14, 2006 Are buying a kit or making your own? Progressive? If you're somewhat handy with a soldering iron:mrgreen: I can send you a set of plans for a progressive controller. It's very easy to put together. Quote Link to comment Share on other sites More sharing options...
mobythevan Posted March 14, 2006 Author Share Posted March 14, 2006 I'm always up for another DIY project. Are these email plans or snail mail plans? Quote Link to comment Share on other sites More sharing options...
Doug71zt Posted March 14, 2006 Share Posted March 14, 2006 It has been recommended to me that the nozzle be downstream of the IAT sensor, apparently there are evaporation cooling issues and the GM sensor for one doesn't work too well after repeated baths. I have a 90 deg right before my throttle body, so I can pretty much do a straight shot with the nozzle. I just have to move my IAT out of the intake manifold and into the IC piping. I am having heat conduction problems with the IAT installed in the manifold anyway. Doug Quote Link to comment Share on other sites More sharing options...
mobythevan Posted March 14, 2006 Author Share Posted March 14, 2006 Excellent, thanks for the tip. I wondered about the IAT placement. Bernard, I will control the water injection with MSnS so I don't think I need anything else, just a relay for the pump. I forgot about that when I saw your post earlier. I checked the water injection page for MSnS and it also uses a fast acting valve to pulse the injection nozzle along with the fuel injectors. Quote Link to comment Share on other sites More sharing options...
240hoke Posted March 14, 2006 Share Posted March 14, 2006 Bernardd -- I would be interesting in taking a look at your plans... could you please email them to twiistedsixx@gmail.com ? Quote Link to comment Share on other sites More sharing options...
Bernardd Posted March 16, 2006 Share Posted March 16, 2006 I checked the water injection page for MSnS and it also uses a fast acting valve to pulse the injection nozzle along with the fuel injectors. Do you have a link to the fast acting valve? Quote Link to comment Share on other sites More sharing options...
mobythevan Posted March 16, 2006 Author Share Posted March 16, 2006 in the picture it is labeled as an "aquamist fast acting valve" http://megasquirt.sourceforge.net/extra/waterinj.html Quote Link to comment Share on other sites More sharing options...
forzfun Posted March 25, 2006 Share Posted March 25, 2006 The valve on the megasquirt system also positively shuts down the water injection system. It eliminates lag on shut down if you have a long line between the holding tank and siphoning depending where the injector is located. I like the suggestion on locating the IAT sensor before the injector, which will be in front of the TB. I'm putting an air/water intercooler that directly bolt in where the J tube is after the turbo in the 81 to 83 280zxt. I found it on E bay last year and it was desinged for that engine. Very clean and very easy. Planning on using the water injection if water temp get too high in intercooler on long runs. My goal is to safely boost to 15 lbs. using regular 91 octane gas. I run 12 lbs. now on a air to air intercooler with no problem on a 83 zxt on 91 octane. Also on that aquamist fast acting valve, checked the price and it's over $200. Found a 12 volt 1/4 inch direct acting diaphram valve that should work for around $60. 81zxt- daily driver, except in snow. 81zxt- project car-imsa body-ms- intercooler-water injection 83zxt- project car- same as above for my son 83zxt 2+2- showcar "It's not for the speed:burnout:, it's FORZFUN:lmao: !!" Quote Link to comment Share on other sites More sharing options...
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