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Thread: Massey Ferguson 6475 Perkins Turbo Boost Pressure

  1. #1
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    Question Massey Ferguson 6475 Perkins Turbo Boost Pressure

    Hello

    Tractor Massey Ferguson 6475, engine Perkins T2, power 100 kW, year 2004

    What nominal turbo boost pressure ? Do you know what ?

    Thank you in advance for the information
    Best wishes

  2. #2
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    Re: Massey Ferguson 6475 Perkins Turbo Boost Pressure

    Quote Originally Posted by Wombat100 View Post
    Hello

    Tractor Massey Ferguson 6475, engine Perkins T2, power 100 kW, year 2004

    What nominal turbo boost pressure ? Do you know what ?

    Thank you in advance for the information
    Best wishes
    Many things will affect boost pressure. While i dont know what max pressure should be i do know the delphi injector pumps are very bad for problems resulting in low power. First check all intercooler hoses for cracks if you have intercooler that is.
    Replace the silly electric lift pump with the new style genuine perkins one.
    You could try running it on a litre of neat fuel additive first that fixed a jcb i did which would hardly rev up at all next i would have injector pump overhauled.

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    Re: Massey Ferguson 6475 Perkins Turbo Boost Pressure

    He is in it injection pump Bosch VP 30 and standard injectors, mechanical fuel pump new, new fuel filters, intercooler ok.

    Maybe someone has catalog data that should be this pressure.

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    Re: Massey Ferguson 6475 Perkins Turbo Boost Pressure

    Quote Originally Posted by Wombat100 View Post
    He is in it injection pump Bosch VP 30 and standard injectors, mechanical fuel pump new, new fuel filters, intercooler ok.

    Maybe someone has catalog data that should be this pressure.
    Either diaphragm for the boost is blown on the top of injector pump or the pin it operates is stuck in. The pin should be sprung loaded out or pushed out by lift pump fuel pressure cant recall which. They stick in meaning no boost.

    If you already know your engine is lacking power there is no point tring to measure boost pressure cause it wont get full boost. Boost is affected by everything so theres only any point measuring it if you know everything else is working right and your just tweaking the power and fueling up to pimp your ride.

  5. #5

    Re: Massey Ferguson 6475 Perkins Turbo Boost Pressure

    Quote Originally Posted by Wombat100 View Post
    He is in it injection pump Bosch VP 30 and standard injectors, mechanical fuel pump new, new fuel filters, intercooler ok.

    Maybe someone has catalog data that should be this pressure.
    This model has electronic injection so any faulty components would result in lights flashing on the dashboard. It is very common for a stainless steel hose clip to snap on the intercooler pipes which leads to loss of boost pressure so that's worth a look, the clips are usually still in place and look fine until you handle them and find one broken.

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    Re: Massey Ferguson 6475 Perkins Turbo Boost Pressure

    maybe someone else knows something ?

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    Re: Massey Ferguson 6475 Perkins Turbo Boost Pressure

    Someone may well know some more about these engines but one of the most knowledgeable contributors on here has already given you some advice.
    Last edited by essexpete; 30-01-18 at 11:06 PM.

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    Re: Massey Ferguson 6475 Perkins Turbo Boost Pressure

    no indicator lights up, rubber checked, the turbocharger gives 1 bar under full engine load. Is not that too low value?

    thank you for all previous tips

  9. #9

    Re: Massey Ferguson 6475 Perkins Turbo Boost Pressure

    Quote Originally Posted by Wombat100 View Post
    no indicator lights up, rubber checked, the turbocharger gives 1 bar under full engine load. Is not that too low value?

    thank you for all previous tips
    I looked up the turbo specifications for this engine and most of the models should produce 1.45 bar so it does sound a bit low. Have you checked the wastegate lever on the turbo? You should be able to lever it open under spring pressure and then it snaps shut when you release.

  10. #10
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    Re: Massey Ferguson 6475 Perkins Turbo Boost Pressure

    This turbocharger is available in engines with different powers, and has the same opening parameter for the bleed valve.

    I was able to find on the internet the boost pressure for this 150 HP engine and at 2000 RPM the pressure is 0.93bar, so in a 135HP engine the logic will be similar.
    Regards

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