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Old 19th November 2004, 17:49   #1
x703jko
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Timing Chain Replacement Interval
What is the recommended timing chain replacement interval in the E39 M5? Is there any reason to do it more frequently?

Thanks.

Jeff
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Old 19th November 2004, 19:08   #2
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Re: Timing Chain Replacement Interval
Quote:
Originally Posted by x703jko
Is there any reason to do it more frequently?

Thanks.

Jeff
Considering the cost, I certainly hope not.

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Old 19th November 2004, 22:52   #3
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Re: Timing Chain Replacement Interval
i don't think there is a replacement interval, unless the engine is remove for rebuilding. Then again, with the alusil cylinder bores, i don't think a rebuild is an option.
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Old 19th November 2004, 23:02   #4
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Re: Timing Chain Replacement Interval
Quote:
Originally Posted by mottati
i don't think there is a replacement interval, unless the engine is remove for rebuilding. Then again, with the alusil cylinder bores, i don't think a rebuild is an option.
Mike
Thanks Mike. So one relies on the chain tensioner huh?

How about cam timing adjustment? Or is there such a thing in the E39 M5? Jeff
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Old 19th November 2004, 23:41   #5
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Re: Timing Chain Replacement Interval
Quote:
Originally Posted by x703jko
How about cam timing adjustment? Or is there such a thing in the E39 M5? Jeff
Should be taken care of by the vanos.
mike
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Old 19th November 2004, 23:46   #6
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Re: Timing Chain Replacement Interval
Quote:
Originally Posted by mottati
Should be taken care of by the vanos.
mike
Thanks Mike. Jeff
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Old 20th November 2004, 00:20   #7
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Re: Timing Chain Replacement Interval
the cam chain lasts the engines lifespan, only if it gets defected it should be replaced.
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Old 1st September 2012, 05:01   #8
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And, apparently, that is my fate.

The engine's perfect. Just redid the rod bearings, though when I pulled them they were still perfect at 118,000 miles. Leak-down test is within 5% of factory on all cylinders. Engine's perfect mechanically...

EXCEPT--the f***ing Bank 1 VANOS won't pass the GT1 testing procedure, it reads at 70 degrees, tolerance for first test is 58-67 degrees.
Apparently, either my chain guides are too worn, or my chain has stretched.

Bavarian Machine Specialties is quoting $11,000 to replace the chain and all tensioners/guides.

What do you guys think? For a lousy 4 degrees, can I just remove a link from the chain?
Or, can I thread a new chain through, using the old chain to pull it?

Is there any other way than a brutal disassembly?
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Old 1st September 2012, 05:49   #9
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$11,000 to replace chains and tensioners? That is a really steep price, a regular repair shop that is good at what they do should be able to do it for a few thousand at most.

I did enough work a week or so ago to where doing the chains would have been an hour or two extra work.



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Old 1st September 2012, 06:40   #10
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Thanks Tradin1.

Yes--I thought it was steep too.
I admit it looks like a fair bit of work--lots of dissassembly/reassembly, but not a rebuild.

Does anyone know a good shop in the Houston area that's more reasonable? And, by the way, competent to do this job properly?
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