JT,
Thanks, and agree you can't have one rule to cover all. I was however reading the instructions (rare I know), and it mentioned to change the rod every 5 liters. I've just hit that now. I've not been running it hard as I'm still getting up to speed myself, and it gets oiled (ARO) and has new/cleaned filter after every meeting (it also gets bagged with a dehumidifier packet!). I checked for end play on the big end and there's nothing thus far so planning to run perhaps another 5 liters before changing, or until I see play of course.

So, I know this is an in-exact science question, but what is the rough estimated time between rod/bearing changes that you guys find? It'll just give me an idea of what to expect.

Ps. My M7 WCS v3.0 just arrived. Best looking engine I've seen. Can't wait to run it, maybe this weekend for the finals if my I can find the talent!

JBSpeed