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      06-30-2012, 10:31 AM   #10
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Drives: Harrop M3 / F10 M5 / F82 M4
Join Date: Apr 2008
Location: SoCal

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Garage List
2000 BMW M5  [0.00]
1990 BMW 735i Turbo  [0.00]
2008 BMW M3  [7.50]
2015 BMW M3  [0.00]
2015 BMW M5  [0.00]
Quote:
Originally Posted by Powerlift17 View Post
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.
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?
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