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Thread: X5 E70 4.0d engine rebuild , timing chains , crankshaft replacement

  1. #11
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    The state of the engine, carbon, crud and wear, is pretty frightening. Was it a city car?
    Current: BMW 530e M-Sport - '17, BMW 630i Sport auto - '07, BMW 325i Coupe - '93, BMW Z4 2.5si Auto - '07, '90 BMW 316i Lux.

    Previous: BMW 328i Coupe - '96, BMW 530i SE auto - '07, BMW 530i Sport auto - '02, BMW 318i SE Touring - '07, BMW 330Ci Sport - '04, BMW 520d SE - '11, BMW 523i SE - '00, BMW 328i SE Touring - '00, BMW 523i SE - '97, BMW 323i SE - '98, 330Ci - '00, 325i Coupe - '93, 318Ci - '01, 316iSE - '98, 325iSE 2dr - '91, 320i Conv - '91, 325i Coupe - '92, 320i 2dr - '91.

  2. #12
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    Quote Originally Posted by dergside View Post
    The state of the engine, carbon, crud and wear, is pretty frightening. Was it a city car?
    It really is and begs the question how manufacturers were allowed to build so many diesels over the last 15-20 years.

    My next car will not be a diesel, it is just filthy. I changed the oil in mine last month and within about 10 miles, after checking the oil level via dipstick, the oil was black again. 2 years ago, I removed the swirl flaps, cleaned the intake manifold and the EGR valve and although it wasn't as bad as above, the amount of carbon that came out and this was a car that spent 90% of its life on a motorway.

  3. #13
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    This car was just bought in UK ,on the way to Dublin start making noise . For the year , mileage is not really high , so more likely short distances . But main thing for this damage , EGR system , which returns exhaust gasses back to inlet system , threw breather system it gets all dirt as well . Too long service intervals , people think they can do plus more some miles, oil quality ,very small oil filter , and all this counts . Diesel oil will be dirty all the time , the only thing , good oil will not leave the dirt in engine , it will wash it out .thats why we do use 10W60 in lot cars these days . These N57 very soft engines . We had one more 2014 or 2015 with very low mileage , inside was much much more worse ..... first time I used 0W30 to get bit more wash in it , and the engine burned 1 liter of that oil very quick so next oil change we went different grade . Will see how it will go .


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    Motor Confidence-14b Knockmitten lane,Western ind est ,Naas road D12

  4. #14
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    I hope he knows about the NOx tax


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  5. #15
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    Quote Originally Posted by Dave View Post
    I hope he knows about the NOx tax


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    No, it was as last year anyway


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    Motor Confidence-14b Knockmitten lane,Western ind est ,Naas road D12

  6. #16
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    Ahh ok, I was thinking, after shitty news, it would be horrible insult to injury.

    Nice work BTW. Always love seeing this stuff

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