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Kevin Osborn

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Posts posted by Kevin Osborn

  3. Fuel pressure regulator - where to locate

    in Fuel System

    Posted

    3 hours ago, Pete Lewis said:

    why ??

    are you using a non std pump  ???

    is there a problem , as these are not normally required 

    Pete

     

    Hi Pete,

    I’ve got an aftermarket pump fitted which pushes out around 3psi but occasionally causes flooding when at idle. Needle valves and floats have been replaced and the dreaded ‘slivers’ removed and fuel filter fitted.

    I wondered if anyone can suggest a convenient place to locate the regulator between the pump and carbs?

    Kev

  5. Fuel pump identification

    in Fuel System

    Posted

    So fuel pressure gauge arrived and I tested the pump - just under 3psi. A little more than the recommended max of 2.5 but would this be enough to cause overflow? As Sod’s law would have it, the carbs are behaving themselves at the moment but likely to play up when least needed such as when waiting at the lights......

  6. Fuel pump identification

    in Fuel System

    Posted

    On 15/01/2021 at 18:34, Pete Lewis said:

    this design is out there , its not uncommon  . but not close to the original

    over the years i  have found SU get upset by a lumpy idle  ???

    you need to measure the output pressure if you can 

    unfortunate but many aftermarket pumps have been shown to exceed the 2.5psi max   so buying another may not improv

    i take it this is  1300  using a short lever pump and NO plastic spacer 

    pete

     

    Have ordered a fuel pressure test gauge so I can test the output. I need to establish if it’s too high before I think about a new pump or pressure regulator.

    Kev

  9. Fuel pump identification

    in Fuel System

    Posted

    Hi all,

    Does anyone recognise the fuel pump in the photo? It’s been on my my Mk2 Spit ever since I bought it over 20 years ago but I only realised it was non standard when I came to dismantle it to clean it recently.

    I’m wondering if it may be the cause of an occasional issue I have with the float chambers overflowing - today this happened first on the rear, then on the front SU. It only occurs when idling. I’ve replaced the needle valve assemblies, cleaned out the float chambers (no dirt or rubber ‘slivers’) and the fuel filter is changed regularly.

    Could it be the pressure from the pump is too high and overwhelms the float chambers  when the carbs are not drawing much fuel?

    Appreciate any thoughts!

     

    E8B8A2D7-79CF-459D-959C-7769EEFDD593.jpeg

  11. Water pump housing?

    in Cooling System

    Posted

    Evening guys, although I first joined the TSSC in 1999 and browse the forum frequently, this is my first post and I’m hoping someone can help me with what is probably an easy answer.

    I need to replace the water pump housing on my Spitfire Mk 2 1147 engine as it has the early type with only a single tapping whereas I want to fit the later housing with 2 tappings for both the temperature transmitter and the adapter for the heater hose - I’m currently not heating the inlet manifold!

    The part for my Spitfire is listed as no. 144297 or 144297A for the alloy version however I have in my possession part no. 307095 which I believe is the housing for the Vitesse, GT6, TR5/250/6 etc. The question (before I drain the cooling system and dismantle the pump and housing) is will this fit/work OK on the Spit? It appears the right size although the tappings are on opposite sides as opposed to both on the same side for the Spit version.

    Many thanks in advance.

     

     

     

     

     

     

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