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Thread size for outside nozzles?
This is a discussion on "Thread size for outside nozzles?" within the Technical Questions forums. This forum, and the thread "Thread size for outside nozzles? "are both part of the General Performance category;
Devilsown Methanol Alcohol Water Injection
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Thread size for outside nozzles?
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03-12-2008
| #1 (permalink) |
| Water Injection Newb Year: 1986 Make: Dodge Model: Omni GLH-T Join Date: Mar 2008
Posts: 6
|  Thread size for outside nozzles?
I received my universal kit just a couple of weeks ago and plan on the install here in the next few days. I noticed that everywhere I look the nozzle threads are called out as 1/8" NPT, but I can tell just by looking at them they are a straight thread (not to mention the o-ring gives it away). So I tried to thread it into an 1/8" NPT fitting, and sure enough, no go. Does anyone know what size they real quick before I run to the industrial store to match them up? thanks, clay
Last edited by Clay; 03-12-2008 at 01:16 PM. |
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03-12-2008
| #2 (permalink) |
| DevilsOwn Staff Year: 2000 Make: Pontiac Model: Grand Prix  Join Date: Apr 2005
Posts: 1,101
  | Re: Thread size for outside nozzles?
They are a tapered 1/8npt thread. When cutting npt threads in your intake and they are too loose the Oring becomes the seal. If you Cut the threads properly or use 1/8npt bungs you usually will not tighten down to the o ring.
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03-12-2008
| #3 (permalink) |
| Water Injection Newb Year: 1986 Make: Dodge Model: Omni GLH-T Join Date: Mar 2008
Posts: 6
| Re: Thread size for outside nozzles?
yup, your right! I couldnt hardly thread it in by hand, but once I tried it with a small wrench, it went in ok. Must have been a burr on the 90' fitting I guess. Plus, with such a short section of thread, it looks like its straight and not tapered. Thanks! clay
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