HPO Cross-Over With Test Port? - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 37 (permalink) Old 06-18-2010, 12:44 PM Thread Starter
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HPO Cross-Over With Test Port?

Today I'm going to build an HPO X-over, and in the center, I want to put a "T", and cap that so that I can hook my HPO gauge to it.

Has anyone done that? Is it useless? I just want to be able to read the average pressure in each head, instead of just one side at a time.





And some 4AN fittings and tubing... Anyone see any issues?

I was also worried about too many leak points... Any possibility I could use lock-tite or something on the unions at the "T" to make sure they don't back off? Or just tighten the piss out of them?


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post #2 of 37 (permalink) Old 06-18-2010, 01:50 PM
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Re: HPO Cross-Over With Test Port?

I've never done it that way, but it should work OK. You have a bulkhead tee there - if you can mount it somewhere with an angle bracket and it will keep it from flopping around and be less likely to have a fitting come loose. Those are JIC fittings - you shouldn't need loc-tite - and if you "tighten the piss" out of them you will deform them and make them more likely to leak.

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post #3 of 37 (permalink) Old 06-18-2010, 01:56 PM
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Re: HPO Cross-Over With Test Port?

overtightening them is as bad as under tightening them. They use the flare inside to seal.

No anything is supposed to be used on the threads of a JIC fitting.

Also, I would recommend you don't use JIC and pushloc. 3,000 psi of oil empties quick.

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post #4 of 37 (permalink) Old 06-18-2010, 02:02 PM
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Re: HPO Cross-Over With Test Port?

Is the gauge going under the hood like a fuel guage...may be kinda hard to read when you need it....but an interesting idea.

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post #5 of 37 (permalink) Old 06-18-2010, 02:02 PM Thread Starter
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Re: HPO Cross-Over With Test Port?

That T isn't the actual one I'm using, but I do like the idea of securing the bulkhead T with a bracket...

I'm not using push-loc Marty.

Ratard.

I've got 1/4" stainless tubing. Like the ITP HPOX, just with a T union in the middle.


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post #6 of 37 (permalink) Old 06-18-2010, 02:05 PM Thread Starter
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Re: HPO Cross-Over With Test Port?

Quote:
Originally Posted by southmike View Post
Is the gauge going under the hood like a fuel guage...may be kinda hard to read when you need it....but an interesting idea.
Nah, It'll be running to a bulkhead fitting at the cowl and mounted where I can read it while driving. I have caps and plugs for when it's not being used.


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post #7 of 37 (permalink) Old 06-18-2010, 05:37 PM Thread Starter
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Re: HPO Cross-Over With Test Port?

Ok. I got it done and on, but changed it up some from my original plan. I got a T with two male fittings on each end, and a female fitting in the middle. I put the female fitting on my pipe-AN fitting in the head, went under the turbo, and back to the other side with the tubing. For now I have the test port capped. The only issue I see now is that I need a 90* male to female fitting to keep it from hitting the turbo intake. I'll have pictures when I get back to the truck.


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post #8 of 37 (permalink) Old 06-18-2010, 11:54 PM Thread Starter
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Re: HPO Cross-Over With Test Port?


I'm planning on using flex hose to run the gauge instead of hard line. It's going to work pretty good IMO... I test fitted the gauge up and it worked nicely. My idle is a lot more steady now as a cool side-effect of the X-over.


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post #9 of 37 (permalink) Old 06-19-2010, 12:09 AM
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Re: HPO Cross-Over With Test Port?

hey would you build me just an hpx?

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post #10 of 37 (permalink) Old 06-19-2010, 12:26 AM Thread Starter
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Re: HPO Cross-Over With Test Port?

PM'd.


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