Quote:
Originally Posted by keynsham1
The top right just has a Y. I have no idea what that means!
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Y is for Yttrium (the element) indicating a component of the alloy used in the casting. alternatively, Y is for Y Alloy (Hiduminiun Y or RR57)
http://www.early911sregistry.org/forums/showthread.php?58796-Y-alloy-heads-Your-2.4S-has-em&p=446909&viewfull=1#post446909
Regards
John
Last edited by jcge; 12-05-2013 at 02:15 PM..
Reason: Added link and ref to Hiduminium Y RR57
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