Seen this before. It's the result of a piston trying to ingest a valve that has dropped down into the combustion chamber at high rpm.
Joseph McAllister Pentaxian On Sep 19, 2008, at 12:52 , "P. J. Alling" <[EMAIL PROTECTED]> wrote: > Running the engine too lean will do this to aluminum pistons. > > Maxime Thériault wrote: >> What's the story behind this? Do you know? It seems almost >> impossible that a >> gas explosion would do this. >> >> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On >> Behalf Of Mark >> Roberts >> >> Charles Robinson wrote: >> >>> On Sep 19, 2008, at 12:43, frank theriault wrote: >>> >>> >>>> On Fri, Sep 19, 2008 at 1:37 PM, Ken Waller >>>> <[EMAIL PROTECTED]> wrote: >>>> >>>>> <snip> >>>>> Funny how little they've changed over the years. >>>>> >>>> I was thinking the same thing. Not many other car parts would be >>>> so >>>> similar over that period of time, would they? >>>> >>>> >>> I dunno... a piston's a piston, innit? >>> >> >> http://www.robertstech.com/temp/piston.jpg -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
