Hello everyone,
I need your eagle eyes and your years of Porsche engine building experience to help me identify these NOS pistons.
Here is what I know. They are 87.5mm in diameter and don't have any manufacturers markings such as KS or Mahle that I can find. There is a P8800 cast into the cavity as well as the number 2.12 which is also cast in the cavity. On the top of the pistion, there are two distinct "STD" markings. One is stamped in the metal and the other appears to be an ink stamp.
I received an email yesterday from a fellow who saw my ad for these pistons on Samba and said he had an identical set he removed recently from a 1966 Porsche 911 and was wondering if I knew the manufacturer. I told him unfortunately I did not but I would post this request for help on Pelican.
Jamie Novak said he thought they might be for a 2.5 liter 911T Rally motor but he was concerned with the unusual ring groove below the wrist pin. A friend of mine last night said the Porsche 356 pistons had a similar ring groove below the wrist pin as well.
Let me know what you think. Thanks in advance for your help.
Henry
hcarraro@hughes.net
