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Old 03-15-2013, 06:06 PM   #7
shadrach74
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Join Date: Jun 2012
Location: Frederick MD
Posts: 658
Quote:
Originally Posted by Spinnaker View Post
Not trying to add to the debate, but the plastic impellers break even when the bearings are still fine and there is no shaft wobble. The risks of each type are well documented, so we make our choices and take those risks that come with what ever pump you choose. It's your car to do whatever you want to do to it.
There are plenty of used engines around to replace whatever type of failure you may experience, whether it is a breached crankcase or a cracked head.
The joys of Boxster ownership live on.
This...

I've been stranded twice by plastic WP impellers that split in half. I've had only one metal pump fail, which amounted to a minor leak long before catastrophic failure was likely. I'm sure others have legitimate reasons for their feelings on the subject, but my experience is that the "metal mill" scenario is one that I've only heard substantiated second hand. Lots of grim warnings about the risks, but no pics or rist hand accounts. Is there any one out there that has pics of their damaged block from a metal impeller??
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