This is a discussion on "A nozzle mount idea." within the Off-Topic Discussion forums. This forum, and the thread "A nozzle mount idea. "are both part of the General Performance category;
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| Alcohol Injection Year: 1969 Make: Dodge Model: Dart Join Date: Oct 2007
Posts: 37
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I have done the mechanical part of this mount, but haven't run the car yet, so can;t speak to it's effectiveness. I will do so within a day or two, and get back to you. It may seem like extra work, but I thought it was worth while, and worth sharing. Throughout this project, which is a very custom one, I have tried to make reliability,and practical servicability a high priority. For instance, this Dart has a Ford Mustang T-5 intalled, which involved cutting out the stock crossmember and fabricating a new one to make the change of clutches easier. I have done this once already, and was glad I went to the extra work. The idea of taking out the intercooler to TB tube in order to change nozzle size did not appeal to me, and I wanted to be able to change the nozzle more easily. Plus, the warning that the nozzle could get sucked into the engine scared me. So, my solution was to weld a bung to the intake, tap it for 1/4" NPT. Then turn the nozzle hex head off in a lathe, and thread it with a 1/4" NPT die. The nozzle then gets threaded into the bung from the outside of the pipe, just like the temp sensor. In order to remove the nozzle without messing up the threads, I turned a 1/4" NPT union onto the back side of the nozzle, and sealed this with green locktight so the uniion would stay with the nozzle when removing the nozzle from the tube. In order to be able to disassemble the nozzle for cleaning, I sawed a slot in the top of the rear thumb screw assembly so I could get the nozzle apart with it still inside the 1/4"NPT union on the back side. This all has worked great mechanically, and I can see no reason why it won't function fine. So each nozzle now has threads on the front side, and a union permenantly on the back side. I then threaded a short 1/4" NPT nipple into the union which is now sticking out the back side of the nozzle in the intake tube, and turned the elbow (that was intended to be threaded directly to the nozzle) onto the nipple. The nipple is sealed to the elbow with locktight so that I can easily seperate the entire elbow/nipple assembly from the nozzle when I want to change or clean it. I know this sounds complicated. But there are only two maching operations that take about five minutes, and two additional fittings that cost about a buck apiece, if that. And now I can change the nozzle with ease, and I do not have to worry about the nozzle coming loose and getting sucked into the engine. I did not do the machining, although I could have. I had a professional do it. With this arrangement, the nozzle cannot get sucked into the intake. This is not to be critical of the stock design. This kind of thinking is just what makes the hobby fun. That is why we are putting water injection on in the first place, is it not? Sam Last edited by Sam Powell; 10-20-2007 at 06:40 AM. |
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| Alcohol Injection Year: 1969 Make: Dodge Model: Dart Join Date: Oct 2007
Posts: 37
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I am relieved you didn't spot some giant "gottcha" I didn't anticpate. The most time consuming thing, and it only took about ten minutes was to gin up a fixture to hold the nozzle in the lathe. This was why I went to the professional. It was not his skill that was the big deal, although he is a talented guy. It was his huge pile of junk fittings that we needed. We were looking for a 1/4" NPT female fitting that had some kind of bottom in it to keep the nozzle from tightening itself too tightly into the fitting as the tool was machining off the hex shape from the nozzle head. We found an old fitting that had 1/4" NPT on one end, and a vacuum hose style nipple on the other. I don;t know what it was used for originally. It was just in his junk. We then piled just enough washers in the bottom of the female 1/4" NPT fitting to allow the nozzle threads to tighten up, but not lock up under the pressure of being rotated against the cutting tool. It worked great. If I were doing this again, I would simply start the process by taking the 1/4" NPT union that becomes the back of the nozzle eventually, screwed that onto the back of the nozzle with green locktight, and chucked that assembly into the lathe. Then there would have been no need to remove it after the machining process. We did take the insides out of the nozzle while it was being machined. I wish I were set up to show you pictures here. The pictures others have posted have been a big help to me. I have not arranged to get a Photo bucket account yet. I can e-mail pictures to anyone who will send me their e-mail. My E-mail is spowell786@verizon.net. I participate in slantsix.org, and one of our members was nice enough to take a photo I e-mailed him, and hosted it on his server so it shows up in my signature there. Sam |
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| Alcohol Injection Year: 1969 Make: Dodge Model: Dart Join Date: Oct 2007
Posts: 37
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OK PHil, I will give this a try. This is a photo of the car. If I can make this work, I will upload more. I tried two different pictures, and both uploads failed? Do you suppose the files are too big? All my photos are around 400 KB's. In the key it says the max jpg file is 2.38 MB, but I honestly have never kept it straight how these two suffixes relate to each other. Is 2.38 MB the same as 238 KB,or 23.8KB. I hear these terms thrown about the office all the time, but never really bothered to understand them. That was somebody else's job. You wonder why jpg is the only file format in the code index listed in MB, while all the others are KB's. This is the kind of block I always seems to run up against when I get to fooling with computers. It's like I really don;t know the alphabet, much less the language. Any ideas on how to make this work? I would like to try again. Thanks for having patience with an "old guy's" cultural limitations. I know, that's no excuse. My 89 year old Mom does more with computers than I do. Of course my kids are very computer literate. But that is the reality at this point. Sam |
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| DevilsOwn Tech Year: 86 Make: Buick Model: T Type |
send the pics to me here , ill see what the deal is.. punderwood@stx.rr.com are you using outlook express?? if so right click on the pic you want to send click "send to " then "mail recipent" then it will ask if you want to make your pics smaller.. click yes then send it to yourself " your own email" go to your mailbox, get file, save and try reposting in here |
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| DevilsOwn Tech Year: 86 Make: Buick Model: T Type | Quote:
Sam i'll see if i can get them uploaded to my web space | |
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