Results 1 to 7 of 7

Thread: Fuel rail and fuel pressure 280z vs 280zx

  1. #1
    Registered User cesar280z's Avatar
    Member ID
    CZCC-24413
    Join Date
    Jun 2011
    Location
    SOCAL CALIFORNIA
    Age
    40
    Posts
    57

    Default Fuel rail and fuel pressure 280z vs 280zx

    Sorry for the question, what will be the difference in pressure between a 280zx FPR and the 280z's , question being , I am looking to replace my stock 280z with a 280zx, will it work, any toughs.thanks

  2. #2
    Low Budget/High Value
    Member ID
    CZCC-20342
    Join Date
    Oct 2009
    Location
    Washington County, OR
    Posts
    3,629

    Default

    They're the same. You can check the FSM, Engine Fuel section to be sure.

  3. #3
    Z geek at large FastWoman's Avatar
    Member ID
    CZCC-19635
    Join Date
    Jul 2009
    Location
    Hampton Roads, VA
    Posts
    2,787

    Default

    Yup, the same. I'm using an '81 ZX FPR on my '78 Z. I think the turbo version might be different, though.
    My last three sports cars while I still owned all three:

    2001 BMW Z3 Roadster 3.0i soft/hard top (sold)
    1966 Ford Mustang Coupe (sold)
    1978 Datsun 280Z (enjoying very much )

  4. #4
    Low Budget/High Value
    Member ID
    CZCC-20342
    Join Date
    Oct 2009
    Location
    Washington County, OR
    Posts
    3,629

    Default

    cesar280z, I just realized that you asked two questions. The fuel pressure is the same. But the FPR itself will be different, between 1976 and a ZX. It's designed for the fuel rail.

    But if you use the ZX rail and the ZX FPR, together (which is what you said you were doing), it will bolt right on, and be an improvement over the 1976 design.


    FastWoman, your 1978 had the later FPR design with two ports; an in and an out. 1976 has three ports; two ins and one out. So the Zs before 1978 need to swap the rail and the FPR together. It's a better design anyway, with a one piece rail, instead of the three pieces connected by hose.

  5. #5
    Registered User cesar280z's Avatar
    Member ID
    CZCC-24413
    Join Date
    Jun 2011
    Location
    SOCAL CALIFORNIA
    Age
    40
    Posts
    57

    Default

    Thanks Guys, I just made a mistake and gave away a FPR for a ZX thinking I could retrofit my Z FPR ... I should had keep it .... Well seems I got to get another one

  6. #6
    Registered User tymarbry's Avatar
    Member ID
    CZCC-23726
    Join Date
    Feb 2011
    Location
    Kansas City
    Age
    32
    Posts
    122

    Default

    I have a question that is kinda relevant here. Is the 280zx fuel rail solid? because the 280z has a bunch of fule hoses that break all the time and Id rather have something with less parts that can break or something.
    --1977 Datsun 280z--

  7. #7
    Low Budget/High Value
    Member ID
    CZCC-20342
    Join Date
    Oct 2009
    Location
    Washington County, OR
    Posts
    3,629

    Default

    I think that they went to the one piece fuel rail in 1978. You're right, the old three piece rail tends to leak at the connections between rail pieces. I had a three foot fountain of needle thin fuel spraying from mine when it started leaking.

    I have a ZX rail now, but had a 1978 rail for while. They're the same shape and design but the ZX rail was shinier.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Need 90 degree elbow hose for 280z fuel rail
    By jkeese01 in forum Fuel Injection (S30)
    Replies: 7
    Last Post: 12-15-2011, 06:23 PM
  2. 280ZX Fuel Pressure Regulator
    By ed653 in forum Engine and Drivetrain (280ZX)
    Replies: 1
    Last Post: 04-13-2010, 08:20 PM
  3. Fuel rail pressure problems
    By ed653 in forum Engine and Drivetrain (280ZX)
    Replies: 0
    Last Post: 04-11-2010, 08:43 AM
  4. 280Z fuel rail
    By Jeff G 78 in forum Engine and Drivetrain (S30)
    Replies: 4
    Last Post: 04-27-2009, 06:37 PM
  5. Fuel pump 280ZX loosing pressure
    By mazingerz1976 in forum Fuel Injection (S30)
    Replies: 2
    Last Post: 08-22-2005, 01:31 PM

Bookmarks

Bookmarks

Posting Permissions

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