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All original M60 V8 blocks were Nikasil (archive)

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Posted by Dana White on March 30, 1999 at 17:02:14:

In Reply to: M60 block update: good news for some! posted by Bill Mitchell on March 30, 1999 at 11:23:14:


This sounds nice, but I think you've been misled by BMWNA.

If you wish to verify whether you have an alusil block, check the serial number (directions are at Brett Anderson's V8 web page at

If you check your serial number and find out it is an alusil block, AND you are sure it's the original block, I'll be very surprised. If the 5/95 story is true, please post back and let us know the good (new) news.

You absolutely need to check this - if you take the rep's word and it turns out you have a Nikasil block (which I believe is most likely) you'll be left holding the bag when the warranty expires and you missed an opportunity to replace your engine.

In terms of the timing of BMW moving to Alusil, I know of at least two cars that were given replacement Nikasil blocks (the old, sulfur-sensitive alloy) in '96 when their original Nikasil blocks deterioriated - I don't think BMWNA figured out the problem until late '96.

I know BMWNA rep may have "confirmed" this with you, but I have found their (and BMW dealers') understanding of this issue to be very spotty.

For lots of detail on the sulfur issue and the M60 V8's go to the 530i Home Page below.

Looking forward to your update, Bill.

'95 530ia
The 530i Home page:

: I read a post from someone on the UUC Digest last week that in effect said all 540's made after 5/95 had the updated engine block to prevent the sulfur degradation problems we have all learned so much about. I just got off the phone with a BMW NA rep who confirmed that fact. I was flabergasted, to say the least! I had a leakdown test performed on my car at 35,000 miles just to check, and the dealer obviously didn't know this fact either. I have not talked with my dealer about this yet, but intend to. If you wish to call BMW to verify, the number is (800) 831-1117, then press "1", then "4" to get to the customer rep dept. While I am not taking this as 100% gospel, it is helping me to feel better, as my car has 54,000 miles, runs great, and was made in 10-95.

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