Hehe if you guys want to see a real battle with EVERY freakin spec tumbled around go to www.supraforums.com. They have a sticky for just this topic pitting the 2JZ against the RB....Personally to the OP I have owned both a 1991 Turbo Supra with the motor pulled/rebuilt AND I have owned a 1993 TT Supra. The engines are WORLDS apart. As previously mentioned the 7M has a huge problem with blowing head gaskets due to the wrong torque spec on them from the factory. It is still a MAJOR feat to break into the mid-400's let alone the 500 HP club with the 7M engine. That takes LOTS o money's.
Now for the 2JZ. Yes you probably see ALOT of those guys running around with maybe mid-400's and yes these engines are very easy to get in the excess of 800+ on internals. The problem is try getting reliability out of those numbers haha. To reach those numbers it still takes alot of money and I garuntee most of the 2JZ's with high HP #'s have spent ALOT of money to get there. You have to remember that they are:
1. Probably singled which is costly to do right
2. Fuel mods
3. Electronics to support it (AEM Stand alone is the most popular)
4. Race Gas
5. Probably not on stock internals, yes they will hold it but for how long who knows.
6. This is just FYI but the stock TT set-up is a royal PITA to work on with all the vacuum switches etc.
7. Parts are becoming increasingly harder to find. Pretty much Champion Toyota is the best place to get them from anymore and GOOD LUCK finding a mechanic that truly knows what they are doing.
After considering all that I still LOVE the 2JZ but you need to understand its not nearly as easy as most people think it is with this motor. It still takes some bleeding knuckles and decent amount of money to get these cars to the bragging point that most have them at.
You have to remember most of these engines are going to be pulled for a reason. Oh if you decide to buy from Japan make sure your motor is coming from a SUPRA and that it is not an Aristo motor. Aristo's had a 2JZ in them but they were slightly different from USDM. Same with the JDM 2JZ-GTE motor it is slightly different as well. So if you do go the 2JZ route, I would highly recommend you pay a little more for a USDM motor.
I forgot to mention if you can get your hands on a decent Getrag Tranny (6-speed manual from TT Supra which will cost upwards of 2k for a good one) they will pretty much withstand any amount of HP you throw at it....straight awesomeness.....
