Quote:
Originally Posted by Powerlift17
I got a beautiful display full of failure warnings when driving about 30 MPH on a side road. Car towed to BMW and after three days of trouble shooting it was determined that an exhaust valve spring on #1 cylinder had broken (at about 3,100 RPM). When I got the car back the report (50 pages, very detailed) indicated, amongst other things, that I had hit 8,715 RPM for 0.13 seconds.
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Wow... What ended up happening with this? Can you post the report?
These valve-springs should be good for a bit more than 8,700 RPM. My car has seen 8800 multiple times. How many miles were on the motor?