2001 Z24 2.4L twin cam on rebuilt motor with 1000k you were wonder if the stock would handle a turbo running at around 5-6psi?

A stock 2001 Cavalier Z24 2.4L Twin Cam's internals are *not* likely to handle 5-6 PSI of boost reliably for an extended period. While it *might* survive for a short time, the increased stress on the connecting rods, pistons, and other components significantly increases the risk of catastrophic failure.

Here's why:

* Connecting Rods: The stock connecting rods are not designed for the increased stress of boosted applications. They are prone to bending or fracturing under higher cylinder pressures.

* Pistons: Stock pistons might not be able to handle the higher combustion pressures without detonation (uncontrolled explosion) leading to damage.

* Head Gasket: Boost increases cylinder pressure, putting extra strain on the head gasket. A blown head gasket is a common failure point in boosted naturally aspirated engines.

* Other Components: Other components like the stock clutch, transmission, and even the engine mounts will be stressed beyond their design limits.

While some people *might* get away with it for a short time, it's a gamble with potentially expensive consequences. To safely run 5-6 PSI of boost on a 2.4L Ecotec, you'd ideally want forged internals (pistons, connecting rods), upgraded head studs, a better head gasket, and supporting modifications (fuel system upgrades, stronger clutch, etc.). Even then, careful tuning is critical to avoid damaging the engine.

In short, while it *might* work for a while, it's highly recommended to upgrade internal components before attempting to boost a stock 2001 Z24 engine. The risk of engine failure significantly outweighs the potential benefits.