If you know your pistons are +40, that should be all you need to know,
Hi guys - not nit picking you post Richard, I just want to know from any passing guru if that is the case and a bit more about rings, so here goes (probably stuff I should or maybe once knew)
1. I had in mind that I've seen new rings like v8ivor described (stepped) - maybe a zen moment
2. I thought that rings were not always swappable between different manufacturers similar pistons, or is there a standard groove width and depth.
3. I've had tapered rings that I have great difficulty telling which way they are tapered, the instructions always state which way up they go, not a lot of help when up is not defined.