Anybody want some high performance aftermarket pistons?

**Toolmaker51** · Nov 10, 2022, 11:19 AM

Originally Posted by mansworld

Eyeballing the ring grooves!

Definitely, not following the science. As a classroom, high school drafting class, visited Venolia Pistons in Long Beach, CA. Looking back, on a quite non high-tech environment, they were meticulous about locations/ size for wrist pin and ring grooves.

**hemmjo** · Nov 16, 2022, 03:51 AM

Originally Posted by Toolmaker51

Definitely, not following the science. As a classroom, high school drafting class, visited Venolia Pistons in Long Beach, CA. Looking back, on a quite non high-tech environment, they were meticulous about locations/ size for wrist pin and ring grooves.

It was an interesting video. I have installed a lot of pistons, but never saw one made before. I was thinking as I watched the video, "If I was doing that"... I would think the wrist pin hole would be the to machine. Maybe not honed to final size, but everything else is relative to the pin. Isn't it?