Originally posted by DVPGSR
Even with tuning you are still risking the motor. There is a reason that the VTEC motors have oil squirters below the piston...part of which allows the motors to rev so high. With out this the long term stability of the engine is compromised, unless you rebuild the internals every so often.
I do agree oil squirters do provide the blocks strength over a long period of time in terms of NA. but There are reliable aftermarket solutions to reinforce higher reving on nonvtec motors such as a girdle to protect the main caps against the severe sideloads the lower rod ratio blocks generate as you rev into the higher rpms which the more aggressive vtec cam lobe specs demand. Also with forged rods and pistons and rod bolts you can rev even farther then a gsr can.