Just wondering what the experts recon is a realistic rev limit for a worked bigport with standard bottom end.??

Currently set at 8000. But will be throwing in some big cams in the next few weeks witch will no doubt want the engine to spin a bit harder..

And what fails.? Is it the bearing or the rods.


Fairly new to 4a engines... And god there boggy down low.
So used to cruisin round at idle every where in my dunnydore.
But there still heella fun