Current cast crank limits

[Reaper1]

I know this has been gone over in the past, but times have changed, people's set-ups have changed, and the limits of our engines have been pushed to new heights as of recent.

My question is simple, what is the highest power/torque and rpm numbers people have RELIABLY achieved with a cast crank 2.2 OR 2.5?

By reliable I mean not having to tear it down ever week to put new bearings in it and things like this.

[glhs0426]

Just ask Warren Stramer exactly how long he ran the cast crank in his Laser.

[Shadow]

I believe for 2.2 that would be Warren's mtr, somewhere north of 500WHP and the snout of the crank broke off. Other than that, I think it was fine at that power level as far as bearing wear ect.

[turbovanman²]

A few have run cast well into the 500 whp bracket and lived, and at 7+K rpm. I've probably put 400 whp thru mine plus street duty etc, hasn't skipped a beat. I've only gone thru one set of mains due to fuel diluting the oil,