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Thread: 2.5tdi v6 AKE -01 camshaft problems

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  1. Re: 2.5tdi v6 AKE -01 camshaft problems 
    #11
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    All four cams are different but I don't know the measurements. I checked all the manufacturers listed against the cam kit and non give any specification, barley even a grainy picture.
    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:


    www.helpforheroes.org.uk

    Keep XH558 in the air
    www.vulcantothesky.org

     
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  2. Re: 2.5tdi v6 AKE -01 camshaft problems 
    #12
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    Problem Solved! Now it runs smooth and responds to the throttle really good.
    The problem was that the valves had been too long when they regrinded the head, and that the eBay stuff don't got the best quality.
    So firstly I measured how much the valve was left open, by slowly unscrew the bolts and nuts for the cam and simultaneously doing a leakdown test. And that shown that the space was as biggest 0.75mm on some of the valves. Then I opened a valve lifter and measured how thick the bottom was. I think this China stuff was about 1.7mm thick. And then I started to machine theses lifters 1mm in the bottom with a emery and a screwdriver. Then finished with a smooth file to get a nice surface.
    The valve lifters are not moving when the engine is running, so there are no risk of wear due to the rough surface, the only other place I can figure out is to shorten the top of the valves, but that's much more tricky unless the head is removed.
     
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