I find the cost of rebuilding a big-block nitro engine, discouraging, to say the least. Case in point...my REX P5, which has pretty much served me faithfully, has finally worn out the crankpin where the conrod sits (I measured it and compared it to factory specs). I've already rebuilt it once with a fresh P/S last season, and now I find that for the cost of a new crank I could buy a new competition .12-size engine.
I fear wearing-out my Salven .21 in the MRX-3. Christ on a pony.
Is it me, or are nitro engines these days by and large disposable? Looks like you'll end up with quite a collection of crankcases, carbs, heads and worn-out P/S sets after awhile...
Okay, rant mode off.