[cnavarro]

I'll revive this thread to let everyone know that JE has come out with a radically different forging specifically for the 95-105mm bore sizes for Porsches, espcially beefed up around the wrist pin bosses but should not add more weight to the piston overall from what I was told. Very similar to what CP sells now. Better yet, no added price for the new forgings.

I've also spent the last two months researching the modes of failure for 2618 forgings and have come up with some ways to improve the high temperature/high stress micro-fracturing of pistons under extreme loads. Weight reduction, i.e. JE's "lighten combo" can help save some weight. Also, a thermal barrier coating can reduce the crown temperature about 100F, which is pretty substantial considering the temperature at the top ring lands do not typically exceed 200C.

Additionally, one could always have the rods bushed for smaller wrist pins (or made up to use smaller ones), which would increase the cross sectional strength of the wrist pin bosses. That's what I have been doing as of late, making rods with 19 and 20mm wrist pins.