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Join Date: Jan 2003
Location: Los Angeles, CA
Posts: 1,493
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540i engine blocks
I have heard that some 540/740 engines have bad blocks, causing a rough idle condition, due to low compression caused by worn cylinders. Is this true for the 530 engines as well ??
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08-08-2003, 12:18 PM
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Join Date: Jul 2003
Location: Garland, Texas
Posts: 97
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No. There wasn't a problem with them to the best of my knowledge. Although, problems like that can happen to any block, the 3 oh wasn't a cancer patient.
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08-08-2003, 04:28 PM
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Location: Los Angeles, CA
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EXTech, have you had experiance with the M60 4 liter engines with that problem?
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08-08-2003, 04:34 PM
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Location: Garland, Texas
Posts: 97
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yeah I used to be a dealer tech and have seen and done many transplants
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08-09-2003, 03:15 PM
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Join Date: Jul 2001
Location: Rochester, NY
Posts: 502
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I'm pretty certain this is a well known problem with both the 3.0 and 4.0 V8 engines early on. The early blocks had Nikasil linings and the sulfur in the U.S. fuel is thought to deteriorate them. BMW switched to Alusil cylinders in ~1997 and since then there has not been a problem. BMW even upped the warranty to 7 years / 100,000 miles, which you know they wouldn't do just to be nice. Make sure any pre-97 530/540/740 you consider has had the block changed to Alusil. Be careful, some of the early Nikasil engines were replaced with other Nikasil engines, so it's not enough to see documentation that the block was changed. I think there's a website for koala motorsports that lists the exact block numbers. You can also find out more about this problem at www.bmwe34.net Good luck.
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1974 914/1.8 2005 BMW 530i 2008 GMC Acadia |
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08-21-2003, 11:48 AM
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Location: Rochester, NY
Posts: 502
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here's the link... I guess my memory is still pretty good:
http://www.koalamotorsport.com/tech/misc/v8shortblock.htm
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1974 914/1.8 2005 BMW 530i 2008 GMC Acadia |
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08-21-2003, 11:53 AM
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In the shop at Pelican
Join Date: Aug 2002
Location: Los Angeles, CA
Posts: 10,459
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Is there any truth to the rumor that up unitl a certian mileage, BMW will still replace the motors? I heard of a guy recently having it done here in the South Bay
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08-21-2003, 03:22 PM
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