NST (NonStopTuning) Pulleys. Info, Specs, User Data...

[Jason@SportsCar]

Originally Posted by NonStopTuning

Thanks bud, I appreciate the kind words.

Your NST crank pulley should be able to withstand RPMs higher than the OEM range. I realize there was a case where one of these pulleys cracked on a higher RPM engine, but I also know based on my personal experiences with our pulleys on several high revving race engines of our own, our pulleys have stood the test of time on several race engines constantly banging limiter, at 8,000 rpm and above.

Side Note: IF in theory, the NST crank pulley is not able to withstand higher than OEM RPMs, then neither should the OEM pulley be able to withstand such RPMs, being that the prevailing thought pattern has always gone down the road that, "the Toyota pulley is designed for this engine, the displacement, and the RPM range." Real world data and theoretical discussions are not always the same.

Best of luck with all your projects!

There is something odd going on with the 1NZFE at high RPM that causes it to reject aftermarket crank pulleys. Lost one of yours at 7300rpm on one motor, had an issue with a Beatrush pulley on another.

The OE pulley has been running solid at 7500rpm.