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Thread: Volume/Flow Mechanical Fuel Pump V8

  1. #1
    Chad Guest

    Volume/Flow Mechanical Fuel Pump V8

    Hi guys, just purchased a 3.5lt, stroked to 4.2lt Rover Engine.

    Currently has Fuel Injection fitted, but I am replacing with holley, and 4 barrel Manifold.

    Its actually going into a P6 rover Sedan, so I won't have the troubles of the Flooding etc, up and down inclines, and all the Faults I have read in doing this for OFFROADING.

    Will the standard fuel pump(mechanical I think) be capable of delivering enough fuel to run this properly, or will I need, to upgrade to a Electric pump?

    Was going to remove the Mechanical one from the current engine, save the hassle, of relays, and New fuel lines etc...

    Thanks in Advance

    Chad

  2. #2
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    Good score on the engine! I would think the standard mechanical pump would cope, but you might need to change the front cover too (and add a pump cam!) Mind you an electric pump placed under the rear of the vehicle right next to the fuel tank reduces the possibility of vapour lock in summer. I stopped using mechanical pumps decades ago. Also saves on extra oil leaks from the pump. A Facet electronic pump hanging on two soft rubber mounts lasts a long time.

  3. #3
    Chad Guest
    Might just by a facet pump and Run a new line

    Easy...

    Yeah was suprised no one else bid for the Engine, seems like a good buy.

    $1500, and almost new 4.2lt stroker, and i was the only bid...

    Even better a fellow Forum member is bringing it all the way from Melbourne, to Queanbeyan, 15mins from where I live for a Unreal Price...

    Will be selling the Thor, Fuel injection Manifiold, and complete throttlebody setup, if anyone is interested.

    Not sure what the are worth.

    Chad

  4. #4
    bushtrev Guest
    Regarding mechanical fuel pumps on V8s. I am trying to fit a mechanical pump to my Land Rover 3.5lt V8. Have a pump, but body too large and not enough room and bumps against timing chain cover. Goss catalogue has same pump for early Range Rover engines as Leyland P76 4.4lt engines. Pump matched space in timing cover housing. Any ideas?

    I wanted a mechanical pump in conjunction with electric now as a back-up.

  5. #5
    Join Date
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    Quote Originally Posted by bushtrev View Post
    Regarding mechanical fuel pumps on V8s. I am trying to fit a mechanical pump to my Land Rover 3.5lt V8. Have a pump, but body too large and not enough room and bumps against timing chain cover. Goss catalogue has same pump for early Range Rover engines as Leyland P76 4.4lt engines. Pump matched space in timing cover housing. Any ideas?

    I wanted a mechanical pump in conjunction with electric now as a back-up.
    Urgh. Back in my P76 days the petrol pump would start leaking oil at around 6 months and be rebuilt once a year, hated the things. Nowadays I would suggest two electric pumps in parallel if you want backup.

  6. #6
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    bushtrev wrote,...
    Regarding mechanical fuel pumps on V8s. I am trying to fit a mechanical pump to my Land Rover 3.5lt V8. Have a pump, but body too large and not enough room and bumps against timing chain cover. Goss catalogue has same pump for early Range Rover engines as Leyland P76 4.4lt engines. Pump matched space in timing cover housing. Any ideas?

    I wanted a mechanical pump in conjunction with electric now as a back-up.
    The P76 pump will fit onto the timing cover for the 3.5 litre V8. Do you have the thick fibre spacer that fits between the pump and timing cover?

    Ron.

  7. #7
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    chad wrote,...
    Hi guys, just purchased a 3.5lt, stroked to 4.2lt Rover Engine.

    Currently has Fuel Injection fitted, but I am replacing with holley, and 4 barrel Manifold.

    Its actually going into a P6 rover Sedan, so I won't have the troubles of the Flooding etc, up and down inclines, and all the Faults I have read in doing this for OFFROADING.

    Will the standard fuel pump(mechanical I think) be capable of delivering enough fuel to run this properly, or will I need, to upgrade to a Electric pump?

    Was going to remove the Mechanical one from the current engine, save the hassle, of relays, and New fuel lines etc...

    Thanks in Advance

    Chad
    Hello Chad,

    I run a mechanical pump on my 4.6 in my P6 without fueling problems. You will need the eccentric to replace the spacer on the end of the camshaft don't forget.

    Ron.

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