1jzgte generations? - Toyota Nation Forum : Toyota Car and Truck Forums

silver_surfer · 02-03-2008, 09:10 AM

I'm about to buy a 1jzgte engine with a M/T...

can somebody enlighten me on it's generations and horsepower ratings?

how will i know if it is a 1st gen or a 2nd gen or 3rd gen?

what do i need to check to make sure that the engine is in good condition?

TIA! TOYOTA POWAH!!!

TcmaBoy · 02-03-2008, 10:25 PM

Good luck finding an MT 1JZ. For the most part the motors available are pulled from the Soarer and are bolted to an auto.

I think you need to search the web and read up on the 1JZ and swapping before making the commitment. You seem to want one, but know nothing about it.

silver_surfer · 02-04-2008, 08:57 AM

got the engine already, sir TcmaBoy i saw in one of your post that a 1985-86 pickup with extra cab will be involve in your project. i both the engine for my 1986 pick up with extra cab similar to yours. please share some infos regarding the pick up and your plans? and what are your comments and suggestions? TIA

TcmaBoy · 02-04-2008, 06:21 PM

So, you are putting it in a truck? I have done the 1JZ swap in my MKIII, have not put one in a truck. I do not think it is a good match. You want a large displacement motor in a truck for towing and hauling. Pull the diesel out of a Hilux if you can.

I suppose you will have to have a look at the motor to make sure the oil pan sump is going to clear the steering and cross member. The engine bay will have to be gutted and you will have to find a place where it fits. You will have to weld custom motor mounts to the frame, you will have to do a custom trans mount, you will have to make a custom radiator core support, you may have to notch the fire wall and trans tunnel. It is a lot of work, and you just sort of have to make it up as you go. It is not a bolt in deal, and there are no set instructions on how to do it. If you search the web there are a few sites out there where people have documented swaps. Read and learn what you can.

silver_surfer · 02-06-2008, 07:30 PM

actually its not for hauling, we'll be cutting the firewall and move the engine backward to distribute the weight more evenly, the only concern will be the oil pan that might hit the cross member or the steering.

any suggestion on that? raising up the engine or having a custom built long engine support?

TcmaBoy · 02-06-2008, 07:47 PM

If you are going to that trouble I would just weld new mounts to the frame and make new engine brakets. Build a custom trans x-member and rework the trans tunnel to make things fit. Get a rear sump pan and sit it down as low as you can get it.

shaeff · 02-06-2008, 08:53 PM

i'd put a 7m in a truck over a 1jz. i plan on 300awhp in my '94 pickup after i get my supra complete.

silver_surfer · 02-07-2008, 03:22 AM

why choose 7mgte over 1jzgte in a pick up?

Jeeves · 02-07-2008, 09:04 AM

Larger displacement, more torque.

shaeff · 02-08-2008, 05:01 PM

because the 1jzgte isn't the be all, end all of motors, unlike what most JDM tyte kidz these days say. it's really a never-ending battle. ugh.

TcmaBoy · 02-08-2008, 11:18 PM

I picked a 1JZ up because it was a good low buck alternative, but I have been watching prices on them climb to ridiculous levels. A few years back I paid $1400 for a Soarer half cut. Now people want about $2K for just a motor and trans, and the trouble is that all the little kiddies out there will pay it just to say they have a JDM engine.

Quote:

Originally Posted by shaeff

i'd put a 7m in a truck over a 1jz. i plan on 300awhp in my '94 pickup after i get my supra complete.

I would put a 1UZ in a truck before a 7M, and truth be told for what a 2JZ costs I would use an LS1.

Jeeves · 02-09-2008, 12:29 PM

TCMA, Are you kidding me? Prices Soaring? There's one on the market here in my town for something like 1250 and my roommate JUST bought one for $800 with engine, trans, wiring harness and ecm (funnily enough to swap into his SC400 (and ditch the 1UZ)).

Wreckless · 02-12-2008, 11:42 AM

Its not a big deal which generation of 1JZ-GTE you have, unlike what was previously thought. Just get a new 2JZ-GTE PCV valve from the Toyota dealer before you run the motor, and the first gen motors affected by the PCV recall are otherwise identical to the 2nd gen.
Now, that's speaking strictly of the earlier twin turbo 1JZ-GTE, not the VVTi single turbo 1JZ that replaced it in 97, which is a bona-fide clusterfuck to integrate into any US car as awesome as the VVTi's potential may be.
A good check of the motor is to just pull the valve covers off. Most JDM motors have a very dark patina because they don't frequently go for long drives and thus that varnish likes to build up in the cylinder head. Don't try to clean it out or anything like that if the head is still attached - it'll break all that crap loose and leave it floating around in your oil. If it bothers you that much, just pull the head and have it vatted at a local machine shop.

As for the oil pan clearance issues you're worried about, keep in mind that JZ engines came with either a front sump or mid/rear sump oil pan depending on the vehicle it was installed in. Chaser & Aristo motors were front sump, and Supra & Soarer engines were mid sump. If one doesn't easily fit where you want it, you might look for the other, depending on whether or not your motorset came from a Supra, Chaser, or Soarer. Front sump pans are very cheap because they come on Aristo 2JZ-GTE's that people remove to install into Supras and SC's here stateside. Midsump pans are harder to come by because they are needed for the same swap. If you're on a budget I'd look for an SC300 in your local u-pull-it and steal the upper and lower oil pans from that engine, as the upper pan's cast nature allows you to drill and tap it in the proper spot for oil recirculation from the turbos.

Hope that helps.