What's the maximum flywheel hp level for a F22 engine with standard internals?

I've heard people are running 300 flywheel hp safely on standard internals?

 

300whp has been done but they've had issues with head lift with stock head studs.

im sure more power could be made, but how long before the rings go?

 

So what would be a safe flywheel figure to boost too on stock internals?

 

the word "safe" is subjective.

what you consider safe and I might consider safe are 2 entirely different things.

so what are you considering "safe"... in more tangible terms?

btw I would agree with the above though, at just over 300whp you probably will develop some issues with the head lifting after a while of running at that power level... I did after quite a few months of 330whp levels (although I had a couple boost spikes that did not help anything).

 

I was talking about flywheel figures and not whp.

By safe I mean to be used as a daily driver and to run reliably.