[MarioGTR]

Bullshit.

The 2JZ is a very good motor, yes. But it's bottom end is not as good as the RB26's.

It has the same problem that the RB30's have (infact, it is identical in bore and stroke to the RB30) in that the stroke is too long and puts way too much side loading on the pistons and also has too great a velocity on the rotating assemblies and thus can't rev high nor hard.

If you destroked the 2JZ to something between the 1JZ (~2500cc) and the 2JZ (~3000cc) to around 2600-2700cc, you'd have a much better motor - but then the problem becomes the heads themselves and their nowhere near as refined as the RB26's.

Both motors, if built up to the max, will be able to provide huge power and be reliable, yes. But the RB26 wins out as it comes with most of the modifications required for big sustained HP (oil and water pumps and flow galleries for one example) stock.

I have several RB26's and 2JZ's. Some of them even make respectable power levels - so I'm not talking out of my ass like some people.

Mario.