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Discussion Starter #1
I'm looking for you guys' experiences/opinions/etc...

Brand new aeromotive a1000-6 regulator and 2 different marshall and Jegs liquid filled gauges, both 1/8npt like aeromotive says.

They do not thread into the gauge port far at all, I know NPT threading isn't like that on AN fitting, but it doesnt thread in very far at all. Nor does it on my -6AN to -6an gauge adapter w/ a 1/8npt thread tap for a fuel pressure gauge.

I dont want to crank these down, but 2 different fittings and 2 different gauges, somebodys had to have this problem.

Let me know, I'm fine with just threading it in within reason as far as it can go without stressing it much, just wanna' hear your experiences!
 

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If you are definitely threading 1/8NPT into 1/8NPT, then you may just have to open up the female side. If it is into an FPR, you'll need to take appart the FPR before you tap it, because you don't want to let any metal shavings get into it.

How many times can you turn the guage before it binds? The last few turns on NPT fittings should be tough, as the threads have to bite into each other to seal (you should be using a fuel safe liquid seal on the threads too). If you can get around 4-5 turns, that should be good enough.
 

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Discussion Starter #4
i can probably get 3-4 turns then it starts to get right, its not just on the regulator the problem, same even w/ my 6an to 1/8female npt gauge port adapter... and i have 2 brand new regulators. Marshall and a Jegs cf one, which I believe to be a rebadged marshall aswell. any ideas?
 

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i can probably get 3-4 turns then it starts to get right, its not just on the regulator the problem, same even w/ my 6an to 1/8female npt gauge port adapter... and i have 2 brand new regulators. Marshall and a Jegs cf one, which I believe to be a rebadged marshall aswell. any ideas?
You may be making a problem out of something that is not. Do you have a fuel safe thread sealer for pipe threads? Put some of that on the threads and tighten the guage into your FPR. If it doesn't leak and doesn't feel loose, then there's no need to worry. Most companies keep the tolerances on their NPT fittings tight because the more NPT fittings are installed and removed, the looser they become. If the tolerances are loose to begin with, you may install the gauge once, remove it, and never be able to install it and get it to seal properly again.
 

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Discussion Starter #6
i have a few fuel-safe/resistant pipe thread sealants, one from permatex and one from russell. I already put the 1/8"npt plug back into my aeromotive regulator and used the thread sealant. I'm just going to use the -6an to -6an fitting with the 1/8"npt gauge port on it right off my fuel rail, so we'll see how it goes when it comes time to get the car together.

Ive looked over numerous setups and it looks like these gauges dont thread in much at all, and it's the same gauge most everyone offers w/ the aeromotive regulators as it's liquid filled and cheap!

If i run into a problem down the line this thread will be updated, thanks again!
 

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i have a few fuel-safe/resistant pipe thread sealants, one from permatex and one from russell. I already put the 1/8"npt plug back into my aeromotive regulator and used the thread sealant. I'm just going to use the -6an to -6an fitting with the 1/8"npt gauge port on it right off my fuel rail, so we'll see how it goes when it comes time to get the car together.

Ive looked over numerous setups and it looks like these gauges dont thread in much at all, and it's the same gauge most everyone offers w/ the aeromotive regulators as it's liquid filled and cheap!

If i run into a problem down the line this thread will be updated, thanks again!
No problem. I really don't think this will end up being as big a deal as you suspect. Like I said, as long as it seals and isn't loose/wobbly, you should have no problems.
 
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