SuperSport Posted November 7, 2003 Report Share Posted November 7, 2003 Just curious to see if anyone knew if the pistons in the SS are forged or not. thanks. Link to comment Share on other sites More sharing options...
zippy Posted November 7, 2003 Report Share Posted November 7, 2003 if i recall correctly, they are hypereutectic. Link to comment Share on other sites More sharing options...
BenKey Posted November 7, 2003 Report Share Posted November 7, 2003 What exactly does that mean? Link to comment Share on other sites More sharing options...
dcairns Posted November 7, 2003 Report Share Posted November 7, 2003 hypereutectic -adjective (of a mixture or alloy with two components) containing more of the minor component than a eutectic mixture AKA - Fancy word to cover the fact they they are still just cast pistons. Link to comment Share on other sites More sharing options...
SSilverado60 Posted November 7, 2003 Report Share Posted November 7, 2003 yeah they are hypereutonic pistons. basically they have higher percentages of silicon and it makes them stronger and they transfer heat better than a regular cast piston. Link to comment Share on other sites More sharing options...
BigTex Posted November 8, 2003 Report Share Posted November 8, 2003 Getting closer to the real definition. As SSilverad60 said, its more silicon. These pistons are made by forcing in more silicon than would normally mix into an aluminum alloy. I think its past its normal saturation point. No matter, it main benefits are light weight, inexpensive, less heat expansion and stronger. Since it expands less under heat, you can run it tighter in the bore for less oil consumption and reduced wear. As a down side, the alloy is more brittle and unlike normal cast pistons, its prone to breaking or shattering compared to melting. They aren't forged, but have some better characteristics than a standard cast piston. These are the same style pistons in the LS1 and LS6 engines. They also have a teflon skirt coating to further reduce engine wear. Link to comment Share on other sites More sharing options...
SuperSport Posted November 8, 2003 Author Report Share Posted November 8, 2003 Thanks guys Link to comment Share on other sites More sharing options...
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