the 2jz-gte engine is one of the most reliable engines ever built if properly maintained...if you are looking to ask questions by the serious supra experts check out i-supra.com...that is the forum for any question you will ever have on any part of or for that car
I agree. 2jz's in my opinion are one of the best engines ever. The stock Turbo's are reliable but however they will eventually die on you. ofcourse the better you take care of it the better it will last. So make sure you set your Turbo timer for atleast 30 seconds and dont be boosting to much with stocks. However this probally doesnt matter b/c you'll probally have a single Turbo installed anyway right???
I never seen anyone blow their motor with stock twins. however there are multiple times when ii see people with singles do.The tranny is acutally pretty good for manuals but for auto's, 500hp is pretty much the limit. If you thinking about getting a supra, make sure you gots $$$$ b/c the car is pretty high maintanece.