Over the holiday I was given an A15 & 5 speed out of USA 210. My current A15 is at 1508cc so for this I thought I would try and get a larger bore. I started hunting pistons between 77 and 79mm.

Well lo and behold at 77.5 and 78mm I found some and not for a car I would have expected. Wiseco makes Ferrari 330 V12 pistons in 77.5 & 78mm, pin height is 29.9 and the pin bore is 18.5mm, cost ranges between $123 and $150 dependent on supplier. (Part # 6501M78) Realistically this is not much cheaper than custom ones I ordered from JE a few years ago.

A quick search of EBay finds some used ones between $65-75 range. I may try to get a cheap stock one just to see what's what.

Tom