User Tag List

+ Reply to Thread
Results 1 to 15 of 15

Thread: creating a fuel return

  1. #1
    Tyre Kicker

    Join Date
    Jul 2008
    Location
    netherlands
    Posts
    49
    Thanks
    1
    Thanked 0 Times in 0 Posts

    creating a fuel return

    I'm in the process of building a pinto turbo on a budget. I'm using a r5 carb instead of injection and I believe the carb itself doesn't have a fuel return. The fuel pressure regulator (also R5) will return the fuel to the tank.

    This all will be going in a capri III that was origional a carbed pinto. So I assume there is no fuel return on the tank. Buying a 2.8 injection tanks are rare here and cost a lot. So I need something else.

    I do not fancy drilling and welding a fuel tank, I'm allways lucky and will end up with a big bang.

    Now was I reading on turbo mini that this owner had put a T piece in between the tank and the pump. Like this



    I know this is a bit of a bodge but if it works thats fine for me.

    And can I use the standard fuel line that is in the capri or do I need to plumb in two new lines instead of just a retour.

  2. #2
    Mechanic

    Join Date
    Jun 2006
    Location
    Local
    Age
    36
    Posts
    626
    Thanks
    7
    Thanked 10 Times in 10 Posts

    Re: creating a fuel return

    Yeah give it a try I think that will be fine for what you are doing, if it was injection then thats a total different story.

  3. #3
    Tyre Kicker

    Join Date
    Jul 2008
    Location
    netherlands
    Posts
    49
    Thanks
    1
    Thanked 0 Times in 0 Posts

    Re: creating a fuel return

    why is there a difference between injection and carb, both use a high pressure fuel pump (3 bar)

    can you please explain

  4. #4
    Decade Plus User
    Turbosport Subscriber
    Dave's Avatar

    Join Date
    Oct 2003
    Location
    Cheshire
    Posts
    23,117
    Thanks
    167
    Thanked 694 Times in 516 Posts

    Re: creating a fuel return

    I don't know about R5 carbs, but normally a carb needs 3 psi, not 3 bar. 3 bar is roughly 45 psi.

  5. #5
    Tyre Kicker

    Join Date
    Jul 2008
    Location
    netherlands
    Posts
    49
    Thanks
    1
    Thanked 0 Times in 0 Posts

    Re: creating a fuel return

    The r5 gtt is a carbed turbo engine a bit like the metro turbo setup. I see now I forgot to add that the parts are off a turbo car

  6. #6
    Mechanic

    Join Date
    Jun 2006
    Location
    Local
    Age
    36
    Posts
    626
    Thanks
    7
    Thanked 10 Times in 10 Posts

    Re: creating a fuel return

    Yeah more like 3 to 6 psi for carbs, so that return should be fine for you setup.
    Injection runs around 3 bar.

  7. #7
    Moderator+ Decade Plus User
    Turbosport Subscriber
    Turbosport Moderator
    dangerousdave's Avatar

    My 1st Project
    Join Date
    Oct 2002
    Location
    London
    Age
    36
    Posts
    18,258
    Thanks
    81
    Thanked 263 Times in 256 Posts

    Re: creating a fuel return

    You will need to run a high pressure pump though as the regulator will be set up for your normal carb pressure around 3psi but will also add in the boost pressure via the inlet pipe and add that to the fuel pressure so that the fuelling stays as it should.

    Also i would be adding a return to the sender as per the mk2 escorts, all you need do is take it out the tank and drill a hole in it and braze/bolt in a suitable pipe/fitting and refit to the tank and then run the return line down the car

  8. #8
    Decade Plus User
    Turbosport Subscriber
    Dave's Avatar

    Join Date
    Oct 2003
    Location
    Cheshire
    Posts
    23,117
    Thanks
    167
    Thanked 694 Times in 516 Posts

    Re: creating a fuel return

    2.8 Capri tanks have a built in swirl pot, don't forget to factor that into deciding if they are too expensive.

  9. #9
    Pit Crew Decade Plus User bortaf's Avatar

    Join Date
    May 2004
    Location
    london
    Age
    52
    Posts
    1,107
    Thanks
    16
    Thanked 30 Times in 28 Posts

    Re: creating a fuel return

    If it was a 2.0 capri it would it not have 2 pipes in the fuel send unit, feed and a return already ? the VV didn't have a return but the TC webber did

  10. #10
    Tyre Kicker

    Join Date
    Jul 2008
    Location
    netherlands
    Posts
    49
    Thanks
    1
    Thanked 0 Times in 0 Posts

    Re: creating a fuel return

    @dangerousdave I have indeed a high pressure pump that is going to feed the regulator. So I can take the sender unit out and just drill a hole in that and solder a pipe to it? does the pipe need to be in a special place or just sticking out enough.

    @dave I'm living in the Netherlands and for some reason everthing that a few years old turns to gold here. and the 2.8i is a bit of an collectors item here.

    @bortaf from origin it is a 1600 capri so the sender unit has no return.

    The only question left is, is the carb fuel line wide enough for 3 bar fuel pressure to the regulator or will the restriction stress the fuel pump.

  11. #11
    Moderator+ Decade Plus User
    Turbosport Subscriber
    Turbosport Moderator
    dangerousdave's Avatar

    My 1st Project
    Join Date
    Oct 2002
    Location
    London
    Age
    36
    Posts
    18,258
    Thanks
    81
    Thanked 263 Times in 256 Posts

    Re: creating a fuel return

    There was a post on here years back on converting a sender to take a return, think it was by clint/mr hoarder/2quick4u?! il have a look for it later unless someone beats me to it

  12. #12
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    55
    Posts
    25,175
    Thanks
    297
    Thanked 2,287 Times in 2,096 Posts

    Re: creating a fuel return

    i've converted loads of sender units to take a return, just remove it fromthe tank and simply drill a hole in it and braize or solder in a short tube

  13. #13
    Tyre Kicker

    Join Date
    Jul 2008
    Location
    netherlands
    Posts
    49
    Thanks
    1
    Thanked 0 Times in 0 Posts

    Re: creating a fuel return

    thanks for the info gonna put it on the ramps tomorow and have another look.

  14. #14
    Tyre Kicker

    Join Date
    Jul 2008
    Location
    netherlands
    Posts
    49
    Thanks
    1
    Thanked 0 Times in 0 Posts

    Re: creating a fuel return

    Yesterday I found the time to take some skin of my hands and take the fuel sender out.

    so this is what I got




    can I just drill a hole (inside out)? I think I will hit the smaller stud. Can I reallocate that stud? I think it is some kind of earth for the tank.

    The plan is to put this in it as return. The smallest part is as wide as the fuel supply. I will hard solder it inside and outside to minimize the change of leaking



    Also had a bit of a blond moment. the tank is still underneath the car and there is fuel in it. Put it on a axle stand and removed the unit. Cleaned the tank and put some gaffertape on it to stop the fuel fumes. Lowered the car to find out fuel pooring out. Dohh. So had to roll it into the garage guick and squize myself between wall and car to jack it up again to stop it leaking.

  15. #15
    Tyre Kicker

    Join Date
    Oct 2009
    Location
    new zealand
    Age
    31
    Posts
    9
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: creating a fuel return

    i dun a t peice on my turbo mini . works fine
    ENGLISH IRON NEW ZEALAND. NZ'S MOST ULTIMATE TURBOCHARGED FUEL INJECTED MINI AND IMP...

+ Reply to Thread

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