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do you really think... (archive)

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Posted by C///MR on August 28, 2001 at 12:20:17:

In Reply to: Re: New timing chain fitted last week posted by GilesL on August 28, 2001 at 11:36:36:

it is the chain? I don't think these things can really streach. The guides and sprockets wear out which causes too much slack. This can effect the cam timing and such. I think the chain is the strongest part in the group (remember it is a double chain). The bottom line is since your in there replacing guides, sprockets and tensioners you replace the chain too. Since it is a timely repair (labor hours) you replace all the parts along the way.
The parts aren't cheap either...Here in the states the parts kit runs about $700 or so.
take care, Chris

Thanks for the info...

May do it myself although it is a fair wedge, my car is a bit noisy on startup, but seems worse once warmed up...although all M3's seem to sound quite 'thrashy'...My main problem is serious lack of torque at low the point where driving with A/C on in town conditions is really bad!!! Tried lots of things but the main thing I'm told is that it's more than likely a stretched chain....


I had the tentioner replaced just after getting the car last year cos it was noisy sounded like a diesel engine having a bad day.

this seemed to help however i am now using the car every day (sold my 520i)and recently the noise was getting worse again so i went back to the dealer who fitted the tentioner they told me that if the new part did not cure the fault replace the chain. They wanted over 1300 and seemed a bit reluctant to tackle the job i got the usual "They all do it" However if they all do it why does it not make the noise all the time
turns out that the tentioner was ok but the chain and guides were that weak that the tentioner could not take up the slack chain. I have been lucky.

If your car makes the noise at startup do not drive it until the noise goes away let it idle (this is what i have been doing). I think the chain has more chance of jumping when the noise is there


Cool thanks for that!! How did you know your chain was about to go?? Was it really noisy or something? Does your car now 'go' better generally? That price is not bad really....


Had new chain fitted last week by Autobahn in Hexham Northeast england total cost was 997.00. The car runs a lot smoother and seems to be more economical (28-32M/G this weekend) but who cares about ecomomy my point is the timing was out and the chain was so weak it was on the point of snapping i had the job done just in time. There is no more annoying rattle at startup.

Giles you said you were needing this job doing, it is worth every penny. All parts replaced including sprockets.

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