Supra Forums banner
1 - 7 of 7 Posts

· Registered
Joined
·
72 Posts
Discussion Starter · #1 ·
ok i have a 87 supra that im looking into putting a 1jz into now ive been looking around and come to find the have a 1jzgte and 1jzgte vvti motor. so my question is what is the difference between the too and will the vvti make the swap more a pain in the ass. plz let me know
 

· on vacation
Joined
·
3,040 Posts
VVT-I is a bit more involved for not so much gain. Variable valve timing just adds mass to the engine for the benefit of some torque. The non-vvt-i is easier, cheaper, and it's a racier engine.
 

· Registered
Joined
·
193 Posts
My friend have bought a 1jzgte for swaping into his mkiii supra ... He said the oil pan isn't in correct place to put in the car ... Can you say me if there have 2 generation of this engine and if he can change the oil pan for the other generation to swap in ??? thanks
 

· VVT-i FTW
Joined
·
704 Posts
The 1JZ VVT-i actually had more improvements than just the variable valve timing. Besides the larger single turbo, it had a C/R of 9.0 to 1 where the standard 1JZ is 8.5, and the cooling channels were improved. Check out en.wikipedia.org/wiki/Toyota_JZ_engine for more info on all the JZ motors and their differences. The VVT-i has much more low-end torque, making it a smoother, more streetable engine, as well as more fuel-effecient (if that matters to you). Plus, from what I understand, I've heard you can squeeze a little more power out on the stock CT15B turbo than the 1JZ's twins. But like dennisupra stated, the oil pan is a front sump, so you would need to switch it to a rear sump to make it fit. The only big pain in the ass would probably be the wiring. Since the motor only came in the Soarer, you would need to splice the wiring harness in order to have your guages functional. Either way, both wiring harnesses are going to required extending as well, so the splicing issue is just an added step. The biggest downfall of the VVT-i is it's much more expensive, you can get a clean 1JZ twin-turbo engine and tranny combo for ~2-2.5k, where the VVT-i plus manual tranny is gonna run you ~3-3.5k. For cost purposes, your better off going to a 2JZ if your looking for big power.
 
1 - 7 of 7 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top