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  1. #1
    Kristian Keppel Waterholics's Avatar
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    RIVA Fuel Pressure Regulator Fittings ?

    Anybody can tell me for sure what size fittings does the RIVA FPR uses. It looks like the sides are AN-10 fittings and the one on the bottom is a AN-6 fitting. Can anyone confirm this for me? Also what fittings is used in the bulk head for the return line on top the fuel tank ?


  2. #2
    Kristian Keppel Waterholics's Avatar
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    Bump !!! Anyone ?

  3. #3
    lol i doubt if anyone is dropping $500 on a riva regulator they are swapping the fittings out on them.try this go to your local hardware store and if the brass ones there dont work you need to go to a performance shop and get -an fittings.

    when i had an r&d regulator the fittings where all brass npt 3/8 barb fittings that you can get at your local hardware and then when i switched to an aeromotive i had to buy all new -an fittings because the threading was different.

  4. #4
    big john's Avatar
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    the aeromotive regulator i bought uses an6 fittings, an10 is pretty big...

  5. #5
    speedskixp's Avatar
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    I'm almost positive the large fittings on the riva reg are an-10.

  6. #6

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    Bro, If you are broke like the rest of us $500 is a lot to spend on a regulator. I picked up a regulator (Aeromotive 13129), AN-06 braided hose, 2 fuel line connectors (tank and fuel rail), 3-AN-06-90's and 3-ORB to AN-06 fitting for like $250.

  7. #7
    Kristian Keppel Waterholics's Avatar
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    I already have the regulator. I am putting in a custom fuel rail that utilizes AN fittings so I just wanted to be sure. Thanks everyone. I'll try the two side ports as AN-10 as speedskixp said. And the return port as AN-6. Thanks. If anyone could tell me they are 100% positive that would be nice.

  8. #8
    speedskixp's Avatar
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    Quote Originally Posted by Waterholics View Post
    I already have the regulator. I am putting in a custom fuel rail that utilizes AN fittings so I just wanted to be sure. Thanks everyone. I'll try the two side ports as AN-10 as speedskixp said. And the return port as AN-6. Thanks. If anyone could tell me they are 100% positive that would be nice.
    Correction. Mine are AN-12. They measure 3/4. AN is measured in 16ths. so 3/4= 12/16. thus AN-12. They are huge fittings for a fuel reg.

  9. #9
    Gus13letter's Avatar
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    Quote Originally Posted by Waterholics View Post
    I already have the regulator. I am putting in a custom fuel rail that utilizes AN fittings so I just wanted to be sure. Thanks everyone. I'll try the two side ports as AN-10 as speedskixp said. And the return port as AN-6. Thanks. If anyone could tell me they are 100% positive that would be nice.
    If thats the case dont you have a local speed shop you could take it to and test fit the fittings? Post a pic of what you are working on. Will help out greatly! Some of the regulators have pipe thread fittings. I think 1/8 inch NPT.
    I looked at some pics and does look like they are AN fittings, but sorry, I am not sure of the size. Someone has to know this.
    Last edited by Gus13letter; 05-20-2013 at 09:12 PM.

  10. #10
    Yellow93's Avatar
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    I know the R&D regulator I have has 1/4 npt ports.

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