Just joined? Please introduce yourself.
Page 3 of 6 FirstFirst 12345 ... LastLast
Results 21 to 30 of 56

Thread: thread size of drain plug 55 nomad fuel tank?

  1. #21
    Registered Member rockytopper R.I.P 5-13-2017's Avatar
    Join Date
    Sep 2013

    Member #:1884
    Location
    Covington Texas
    Posts
    1,039
    http://m.summitracing.com/parts/fra-499462[COLOR=rgba(0, 0, 0, 0.701961)]
    [/COLOR]
    [COLOR=rgba(0, 0, 0, 0.701961)]This part will fit the drain hole. I'M 99.9% sure its 1/8 npt after seeing it as you guys suggested. The threads on this size pipe do appear to be fine thread just looking at them compare to real pipe lol.[/COLOR]
    [COLOR=rgba(0, 0, 0, 0.701961)]
    [/COLOR]
    [COLOR=rgba(0, 0, 0, 0.701961)]If I do go this route I can build the entire fuel system with zero barbed fittings all AN connections. I will stick with summit as suggested. As for my main pressure line it may be ptfe not sure I get it built at the local hydro shop. Its rated to like 1200 psi and 350 F. Covered in stainless.[/COLOR]

  2. #22
    Registered Member chevynut's Avatar
    Join Date
    Nov 2011

    Member #:115
    Location
    Fort Collins, CO
    Posts
    10,835
    I still think 1/8 NPT is going to be too small ID for a fuel line.

    Let us know what the ID is when you get it.
    56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


    Other vehicles:

    56 Chevy 2-door BelAir sedan
    56 Chevy 210 4-door sedan
    57 Chevy 210 4-door sedan
    1962 327/340HP Corvette
    1961 Willys CJ3B Jeep
    2001 Porsche Boxster S
    2003 Chevy Silverado 2500 HD Duramax
    2019 GMC Sierra Denali Duramax

  3. #23
    Registered Member
    Join Date
    Apr 2012

    Member #:571
    Posts
    4,671
    Regular PTFE line will build static electricity when used for fuel. If you want to use PTFE for fuel, get PTFE hose that is rated for fuel. I think it has a conductor in it that allows grounding to the fittings, and that won't allow the static to build.

  4. #24
    Registered Member rockytopper R.I.P 5-13-2017's Avatar
    Join Date
    Sep 2013

    Member #:1884
    Location
    Covington Texas
    Posts
    1,039
    it fed the stock 265 just fine. Not sure why yourworried lol

  5. #25
    Registered Member rockytopper R.I.P 5-13-2017's Avatar
    Join Date
    Sep 2013

    Member #:1884
    Location
    Covington Texas
    Posts
    1,039
    Besides 1/8 npt vs pump inlet fitting. I dont see an issue.


  6. #26
    Registered Member chevynut's Avatar
    Join Date
    Nov 2011

    Member #:115
    Location
    Fort Collins, CO
    Posts
    10,835
    The one on the right looks quite a bit bigger....but it looks small to me too.

    Which is the pump inlet? What's the ID of both?

    Sure, you'll get gas. But what happens when you go full throttle for a long run? You're going to starve your engine, imo. Your regulator isn't going to be able to compensate for it.
    Last edited by chevynut; 06-19-2015 at 12:07 PM.
    56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


    Other vehicles:

    56 Chevy 2-door BelAir sedan
    56 Chevy 210 4-door sedan
    57 Chevy 210 4-door sedan
    1962 327/340HP Corvette
    1961 Willys CJ3B Jeep
    2001 Porsche Boxster S
    2003 Chevy Silverado 2500 HD Duramax
    2019 GMC Sierra Denali Duramax

  7. #27
    Registered Member rockytopper R.I.P 5-13-2017's Avatar
    Join Date
    Sep 2013

    Member #:1884
    Location
    Covington Texas
    Posts
    1,039
    Pump is on left way smaller than 1/8 npt i dont need to measure. A 3/8 tube dont got 3/8 Id either and the difference in dia between the two is neg across that length anyway.
    Last edited by rockytopper R.I.P 5-13-2017; 06-19-2015 at 12:33 PM.

  8. #28
    Registered Member rockytopper R.I.P 5-13-2017's Avatar
    Join Date
    Sep 2013

    Member #:1884
    Location
    Covington Texas
    Posts
    1,039
    Maybe this will ease your worries.
    http://m.summitracing.com/parts/rus-612170

  9. #29
    Registered Member chevynut's Avatar
    Join Date
    Nov 2011

    Member #:115
    Location
    Fort Collins, CO
    Posts
    10,835
    This chart shows that the pitch diameter of a 1/8" NPT is .363" at the small end. If you want to match a 3/8" SS tube with an ID of about .280" you would have to have a wall thickness at that first thread of .041". That's doable.

    http://www.engineersedge.com/hardwar...pe-threads.htm

    If the fitting is made like that to match a -6AN hose, it should work fine. However, a "standard" 1/8" NPT fitting has an ID of only .187". That's what I thought we were talking about, since you said you were going to Lowes to get one. Like I said above, if you'd bore it out it should work.

    I'd rather have a restriction on the outlet of my pump than at the inlet. If you get a restriction at the inlet it could cavitate at high flowrates. You can push fuel through a small hole faster than you can suck it.
    56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


    Other vehicles:

    56 Chevy 2-door BelAir sedan
    56 Chevy 210 4-door sedan
    57 Chevy 210 4-door sedan
    1962 327/340HP Corvette
    1961 Willys CJ3B Jeep
    2001 Porsche Boxster S
    2003 Chevy Silverado 2500 HD Duramax
    2019 GMC Sierra Denali Duramax

  10. #30
    Registered Member NickP's Avatar
    Join Date
    Mar 2012

    Member #:1653
    Location
    De Queen, AR
    Posts
    4,157

    An FYI

    Quote Originally Posted by Rick_L View Post
    Regular PTFE line will build static electricity when used for fuel. If you want to use PTFE for fuel, get PTFE hose that is rated for fuel. I think it has a conductor in it that allows grounding to the fittings, and that won't allow the static to build.
    As an FYI, in regards to this good tidbit from Rick, I emailed Fragola regarding the concerns.Hi Nick, Yes it does. All of the PTFE hose we’ve carried for the last 3-4 years has had a carbon core. Please let me know if you need anything else. Have a good weekend Brint MclellanFragola Performance Systems888 West Queen StreetSouthington, CT 06489PH 866 337-2739 ext 15Email: Brintm@FragolaPerformanceSystems.com

Page 3 of 6 FirstFirst 12345 ... LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •