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Thread: 750 Oil Burning Cure

  1. #1
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    May 2004
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    Default 750 Oil Burning Cure

    Underneath the hole where the PCV valves go is a void, if you pull out the valve and shine a torch in you'll see what I mean. If you take off the rocker cover and turn it over you'll see 2 little hook shaped tubes (only about 2/3 mm diameter). These 2 tubes drain any oil that collects in the PCV void. Mine were both blocked on one side, so my PCV valve was sitting just above its own personal little pool of oil, sucking it into the inlet manifold every time I pressed the loud pedal. Went at it with a pice of strimmer wire, job done.

    posted by polcon on the U.K. Board
    http://www.the7seriesregister.co.uk/

  2. #2
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    so every month and especially after a highway drive the oil indicator glows, thats due this problem ?

  3. #3
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    Quote Originally Posted by grave77 View Post
    so every month and especially after a highway drive the oil indicator glows, thats due this problem ?
    Definitely not related. What do you mean by oil indicator? Oil pressure or oil level?

  4. #4
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    oil level. everytime I drive for some long distance above 300Km oil level drops.

  5. #5
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    So your car consumes oil, then it should come out of the exhaust and you could see it.
    Maybe really a headgasket problem or just the piston rings, but heads must come off in both cases.

  6. #6
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    thats why I have the tendancy to get a new engine, but most engines in the market are 90 - 91, its very hard to find 94 model, and those old ones would not live long they already have 200K++ I have my old engine in one of my friends store, I was thinking of rebuilding it since its out and installing it. would I get all the parts in the market? and can I inscrease it to 5.4L or more? or the cyl block cannot handle that?

    Thanks again

  7. #7
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    I was thinking of rebuilding it since its out and installing it. would I get all the parts in the market? and can I inscrease it to 5.4L or more? or the cyl block cannot handle that?
    No you start again with mods, repair the engine. Yes, all engine parts you need are available new.
    Just to give you an idea about V12 performance engines, here are the prices between $ 10.000-45.000
    http://www.racingpowerplant.com/bmw_m70.htm

  8. #8
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    I saw that site 3 days ago, I was thinking of getting the enigne block only - if they sell it !!

  9. #9
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    did you ask them for a quote and delivery time?

  10. #10
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    I need to email them first, most of the work is in the heads, they started with the 6L long block, so I was thinking if they would sell the long block only and I rebuild the heads here since I have an old engine that would be gr8. I just want to install something that I will forget about later.

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