im looking into swaping my motor for either a 1jz or a 7mgte i heard the 1jz swap is complicated and i would have to do some alterations and that theres no way to get replacement parts for it ? wich way should i go 7mgte or 1jz?
wich swap ?
- Thread starter hollisterguy40
- Start date
If you have the money go 1jz. The swap is a little harder, but you will find lots of info here to make it a lot easier. Parts are readily available for the 1jz, but don't plan on needing to replace many parts once it's installed 
They have proven to be very reliable engines.
If you go 7M the important thing to remember is to do ALL the engine maintenance BEFORE you mod it and start raising the boost. A metal headgasket is a good idea. Change any hoses that are old and cracked, check out the cooling system, etc...
They have proven to be very reliable engines. If you go 7M the important thing to remember is to do ALL the engine maintenance BEFORE you mod it and start raising the boost. A metal headgasket is a good idea. Change any hoses that are old and cracked, check out the cooling system, etc...
IJZ parts are 100% available in the USA. Not all dealers carry parts, but theres two dealers in Cali that can have you most anything in a day. If they are a fail, Castle Hill Toyota can get you A-N-Y thing. Most of the motor is crossable with a 2JZGTE anyways. In the two years of owning 1JZ's i never had the need yet to order something from Toyota of Japan (thru castle hill in australia).
The 1JZ is the most reliable engine i've ever owned. My wife daily drove my now sold 1993 SC300 with a BPU 1JZ for over a year to work and back. Stop and go traffic for 40mins a day, each way with the AC blasting. In the one year of her driving it, it only needed the oil changed. Never broke down.
I blew the headgasket on my 1992 SC300, but not accidently. I was trying to blow the stock twins (25psi on 93 octane dyno) to put the rumors to fact, and instead popped the head gasket and not the turbos lol.
The 1JZ is the most reliable engine i've ever owned. My wife daily drove my now sold 1993 SC300 with a BPU 1JZ for over a year to work and back. Stop and go traffic for 40mins a day, each way with the AC blasting. In the one year of her driving it, it only needed the oil changed. Never broke down.
I blew the headgasket on my 1992 SC300, but not accidently. I was trying to blow the stock twins (25psi on 93 octane dyno) to put the rumors to fact, and instead popped the head gasket and not the turbos lol.
bigaaron said:If you have the money go 1jz. The swap is a little harder, but you will find lots of info here to make it a lot easier. Parts are readily available for the 1jz, but don't plan on needing to replace many parts once it's installed
If you go 7M the important thing to remember is to do ALL the engine maintenance BEFORE you mod it and start raising the boost. A metal headgasket is a good idea. Change any hoses that are old and cracked, check out the cooling system, etc...
what do you mean by harder?
You just need to do a little research to do a 1jz swap yourself, where as a 7m-gte swap could be done with a Chilton's manual from Auto Zone.
Nothing wrong with either motor. Its more of a personal preference. They both have their design advantages and disadvantages.
1JZ ftw just because of reliability reason
they are both excellent motors but the 7M seems to break more often
i haven't got to drive my 1J car yet but i should be tonight!!!
they are both excellent motors but the 7M seems to break more often
i haven't got to drive my 1J car yet but i should be tonight!!!
Quick question i just found a 2jzgte with ecu + harness and auto transmission would i be able to swap that into my mk3?
you can swap anything you want in to any car you want
its all about money you have to spend and fab work.
i can put a 502 big block with a huge blower in an AE86 if i wanted to
its all about money you have to spend and fab work.
i can put a 502 big block with a huge blower in an AE86 if i wanted to
hollisterguy40 said:
In the long run, you will spend more than you really wanted to spend doing a 2j swap vs a 1j swap I think!
Mark
2JZ swaps require modifying the firewall, custom tranny mounts, differential and driveshaft (not sure on the diff), and more. The 2JZ swap is complicated and expensive to do on the MKIII. Don't be surprised if you spend 6k+ on parts if you do the 2JZ swap yourself (including the motor and tranny). The hardest part of a 1JZ swap is the extending of the wiring harness 2 1/2 feet, and if you have a pre-89, you also have to get custom mounts from BIC or change the front subframe with one out of an 89-92. The 1JZ does road course racing well, and the 7M does 1/4 mile drag racing well due to how the oil pick-up system is designed on each motor. I've had 2 7M-GTE's and swapped a 1JZ into my car. I prefer the 1JZ over the 7M, but everyone has their own preference. Do a good research on both motors and come to your own conclusion.
after being in both cars im going 1jz i just like the way it looks in the engine bay and how reliable it is
again like the others have said its all preferance
again like the others have said its all preferance
honestabe said:
if you use a 1jz bellhousiing and flywheel he could use the stock r154. the 2jz really isnt that much more complicated or that much more expensive if you just get an aristo jdm 2j with no tranny.
Last I checked it's a pain in the ass (ask Driftmotion on that since they've done several) to put in a MKIII and get running properly. It would have cost me about $5k more to have done the 2J swap than the 1J swap. With that $5k, I could go single, upgrade the full fuel system, and more. It's your money, do what you want. Although I will admit that if I had the money, I would have gone 2J because 1 it would be legal and 2 it's more capable of higher numbers. Although I will be building a 1.5JZ in a year or two if all goes as planned.
imo, if your going to do a swap, go 2jz. i know there is more work needed, but its well worth it. parts are easier to get and possibly cheaper since you don't need to pay shipping from japan. and its only about 1-2000 more (if you use r-1540 and single turbo setup). depending on your fabrication skills, i could end up costing almost the same. i hope that helps.
kabanimk3supra
kabanimk3supra
I finally finished my 1jz swap and it's been running in my car for about 2 1/2 months now, and I'm happy to say that it was worth it. The only problem I have with the motor is the low end torque. Obveously the 2jz is the better mtor to swap into your car, but penny for penny you're better to swap in a 1jz. Anyway, the 1jz is very fun with stock twins.