by any chance do you have a engine that was build with larger displacement
than stock or a higher compression ratio?  or perhaps a different cam?

jonathan

On Fri, 3 Mar 2006, Michael Diehr wrote:

> Hi Folks,
>
> I have a new engine still in the break-in period, nearly to the 500
> mile oil change.
>
> I've started driving it harder, but I'm worried that I'm hearing
> knocking / pinging under load at high RPMs.   I'm very familiar with
> how the VW inline-4s sound when pinging, but not so sure about the
> wasserboxer.   Are they prone to it like the i-4s?  The sound i'm
> hearing is pretty subtle, but that may be due to road noise covering
> it up.
>
> If it's not pinging, is there some other high frequency noise that
> might be coming at very high throttle / high load?
>
>