GS300 1JZ engine swap
02-16-12, 01:44 AM
#16
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1JZ is a great engine still and potential for power, luckily the 1jz and 2jz motor mounts and oil pans are directly swappable so there are no issues there.
One of the great things about the JZ series all around is that the blocks/heads/accessories and lots of various parts are directly interchangeable. And it is done all the time for 1.5jz hybrid builds.
You could use the stock 2jz bottom with the 1jz everything else and gain the displacement back. Yeah the 2jz stock bottom won't be forged so that limits power somewhat, but NA-T would have the same limitation.
NA-T is a great route as well, can make plenty of power, but the biggest advantage of the 1JZ-GTE VVTI is that it can be had for well under 2k (and way way less in areas where they had chasers, mark II's, and soarers with stock 1jz's and they don't need to be imported) and will physically drop right utilizing stock parts on the existing motor. It is a single turbo so that you don't have to deal with the heater core clearance issues that the 2JZ-GTE rear turbo housing gives.
Either route will easily provide 400hp with minimal mods, so what ever you have most available in your area you can make something work for your build.
One of the great things about the JZ series all around is that the blocks/heads/accessories and lots of various parts are directly interchangeable. And it is done all the time for 1.5jz hybrid builds.
You could use the stock 2jz bottom with the 1jz everything else and gain the displacement back. Yeah the 2jz stock bottom won't be forged so that limits power somewhat, but NA-T would have the same limitation.
NA-T is a great route as well, can make plenty of power, but the biggest advantage of the 1JZ-GTE VVTI is that it can be had for well under 2k (and way way less in areas where they had chasers, mark II's, and soarers with stock 1jz's and they don't need to be imported) and will physically drop right utilizing stock parts on the existing motor. It is a single turbo so that you don't have to deal with the heater core clearance issues that the 2JZ-GTE rear turbo housing gives.
Either route will easily provide 400hp with minimal mods, so what ever you have most available in your area you can make something work for your build.
The 1jz is tried and tested in Ireland, its the job for me
02-16-12, 07:31 AM
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02-16-12, 09:08 AM
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02-17-12, 10:38 AM
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02-17-12, 07:29 PM
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You would get more torque from a 2J than a 1J... If you do it that's great but your best off with a 2J less $$$ easy swap.. You will have wiring problems since it's older technology vs. new technology.
But in the OP is your $$.
But in the OP is your $$.
02-18-12, 08:22 AM
#25
Of course the 2J is the best choice and the better performing engine, but that doesn't mean the 1J sucks, it's still a hard pulling engine that can make plenty of power with mild upgrades just like the 2J.
In the country the OP is in they may have 1JZ cars, that we never got here. That means they are all over the junkyard and cheap as dirt. It's comparable to the MKIII supra 7M here, I can go down to the local pick-a-part yard here an there are MKIII supra's laying in a field that I could pull the motor for only $99, now the trans an accessories are additional, so approx $300 I could get the entire running driveline, so if this is the case in the OP's country you can see why it may be desirable route to go, and for $300 a 1JZ/R154 is a hell of a combo to work with for the price.
The standard 1J is a Twin Turbo, the VVTI version is the Single turbo version. In a LHD the single turbo will make the install less crowded up against the firewall and heat core, in a RHD car the twins would be in the way of mounting a clutch master cylinder since you mention going Manual swap. The VVTI version also produces a bit more low end torque just as the 2j VVTI version does compared to it's predecessor.
I would go VVTI if you have a choice between both.
In the country the OP is in they may have 1JZ cars, that we never got here. That means they are all over the junkyard and cheap as dirt. It's comparable to the MKIII supra 7M here, I can go down to the local pick-a-part yard here an there are MKIII supra's laying in a field that I could pull the motor for only $99, now the trans an accessories are additional, so approx $300 I could get the entire running driveline, so if this is the case in the OP's country you can see why it may be desirable route to go, and for $300 a 1JZ/R154 is a hell of a combo to work with for the price.
I would go VVTI if you have a choice between both.
Last edited by 99 GS3; 02-18-12 at 08:32 AM.
05-18-13, 12:37 AM
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Correct me if I'm wrong but if he gets a 1j vvti from a later model car it will bolt right up and the wiring and computer will bolt right in just as a 2J vvti would? Again with a newer model 1J vvti.
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