1zzfe is very strong motor for being made of alluminum, been takin up to 17psi on stock internals before on an MR-S, it only ran for 1 1/4 run but it ran an 11.8!, the valve train is the weak point, DO NOT OVER REV IT, i found this out the hard way.
__________________
2007 VW Rabbit 2-Door
2004 Nissan 350Z Track
1980 Toyota Corolla 2-Door Sedan
1979 Chevrolet Corvette L82