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Guest
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Machine shop found 8 bent exhaust valves. No damage to pistons, timing was dead on when I pulled the head, chain isn't stretched either... any ideas?
__________________ This post was auto-generated based upon a question asked on our tech article page here: Pelican Technical Article: BMW Head Gasket Replacement |
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Author of "101 Projects"
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I'd say the only other plausible explanation is that the engine had some type of over-rev event. Such could easily come from a mis-shift while shifting. Having all eight valves bent seems to point to this scenario.
- Wayne
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Wayne R. Dempsey, Founder, Pelican Parts Inc., and Author of: 101 Projects for Your BMW 3-Series • 101 Projects for Your Porsche 911 • How to Rebuild & Modify Porsche 911 Engines • 101 Projects for Your Porsche Boxster & Cayman • 101 Projects for Your Porsche 996 / 997 • SPEED READ: Porsche 911 Check out our new site: Dempsey Motorsports |
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bostongrun
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$$$ shift
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Registered
Join Date: Oct 2003
Location: Mount Pleasant, South Carolina
Posts: 14,328
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Do they look like this:
![]() This was the money shift at Road Atlanta, downshifting to 3rd, but got 1st instead...
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