Originally Posted by
JBSpeed
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
You rarely need to change the bearings, unless they go bad or you rebuild with a fresh P/S. The rod, I would change it. I change the rod every gallon, you can get away with a bit more, but be careful. Think of it this way, if you change the rod its $75, if you dont change it could be a whole new motor $350+. It makes sense. And it may not have any visible "play", but the fact that you cant see it doesnt mean its not there. The rod might also be streched, and you cant tell that either. The amount of play or strech needs is very minimal from OK to blown motor.