1JZGTTE or 7MGTE

Hi, I really need to know where I can find performance parts for the 1JZGTTE, especially the internals (cams if possible). I already know of the parts on suprastore.com, but those arent enough. I amin dire need so that I can decide on a 1JZ or a 7MGTE. I would also like to know if you guys think I should get a 1JZ or a 7MGTE. Thanks alot for your help.

Contact HKS USA. They can special order parts from Japan. I believe they have cams. Contact companies like JE, or Arias. They may be able to provide pistons and rods. Have the specs of the stock pieces ready.

Get the 1jz
Its the engine that some mkIV's use but don't take my word for which one is better- i'm still new at this stuff.

The engine blocks are pretty similar, But if your still new I would go with the 7MGTE, Its alot simpler to work on.

hey
think about it like this the max power output of any engine is determined by its size so if your looking for power stick with the bigger one also its simpler to get parts for the 7m.
As a matter of fact the only reason for making the 1jz was the redused taxes to toyota for keeping the size down. they knew that it was baddley underpowered thats why the put the twin setup on the motor.
on top of all that cheaper to get parts for the 7m and you dont have to go to japan to get them. do this go to ebay type in 1jz vs. 7mgte

Where did you hear that huge load of jibberish. The 1jz-gte (ONE "T", twin turbo does not get "TT" :rolleyes: ) came FIRST in 1989, before the 2jz-gte years later. The number in the front is the revision to the engine, the same way the 3M came way before the 7M. You don't need a 400cuIN engine if you can get a reliable 400hp out of a 3.0L, there is nothing requiring them to keep size down which is why there are a lot of larger displacement V8 and even some V12 engines. You use a smaller engine because it weighs less, it's more efficient over all, and thus your car will handle better and require less power to move the same speed and be cheaper to produce. Keep in mind your only talking about 0.5L here, that minute amount has been blown off the charts by technology, 280hp stock vs. the 7m's 230hp. If you have a hard time finding parts then do not get an engine that wasn't sold here. Don't get the 1jz because it's JayDeeM t1Gh7 and you just want to blow $5K, get it because you have felt it's power band, you have seen what it can do, you can readily find any parts available for it, and the engine fits your style. If none of those are true you need to stick with what the 7m.

What about tha Japanese 2.5 Liter version of the engine? Its a very reliable engine, just not as big as the american version.

2.5L version of what engine? The 1jz IS the 2.5L, the 2jz is the 3.0L, there is no american version of a 1jz. :)

My bad.

Not a problem, one way to learn is simply to ask. :)

Go with a 7M. By the time you pay for the clip you could have a very potent 7M. Plus 1J parts are hard to get and are expensive. Check out 7mpower.com. 7Ms do put down respectible horsepower, people are too quick to swap in a 1JZ.

<has an 88 with 2jzgte, so from experience the 7mgte is a turd not counting the well known HG , 7mgte might be ok if you replace all internals especially crank. gl either way the $$ will be about the same for the stock 2jz or 1jz w/tranny+ecu as 7mgte with all new parts w/tranny+ecu . btw the stock M ?something? tranny with 7m is garbage too, lol id go jz, less headaches . gl bro

i accidently mixed up my positive and negative terminals in my battery, now my car doesn't start and i don't hear the fuel pump cut on..... i though it might have been a fuse so I went ahead and changed it, but some people tell me I fried my ecu, what is ur opinion on this?

Good info "twint88supra" :rolleyes: , I suppose you have proof to back up every one of your rediculious statements. Lets break it all down since I don't want people here to believe any of that. The price isn't even close, a low milage JDM 7m-gte with an R-154 is only $600-700. Bolt-in, straight swap, nothing else needed if your turbo (another $200 worth of parts if your n/a). A 1jz-gte JZA70 halfcut is a whopping $2500 on average, some more, some less. Plus you still need a few more parts like a PS line, throttle cable, 89+ subframe if you don't have one, extended harness (if you can't do it yourself it will cost you big money). Now onto the 2jz, if you get an engine and transmission only it will cost you about the same as a 1jz half-cut. You will need tons of wiring to get the stock ECU to work, or to go standalone which is another $1K plus a few custom brackets and DS as well as the above mentioned 1jz parts needed. You can hardly say that's all the same price. There is nothing wrong with the 7m internals, there is even less wrong with the 6m/7m crank. Have you ever noticed how people never touch the stock crank, except to knife edge it or balance it better. Stock rods are good to 350hp or more but after that they should be stress relieved/shot peened/magnafluxed for some more hp. The M something transmission? The W-58 is good for 350hp, a few people are currently running more than that through them with success though. The R-154 never needs to be upgraded internally, some have problems with the 1-2 syncro breaking after the transmission has been ragged on for 200K miles but that should be expected. You can hardly call that garbage and use it as an excuse to swap in a 2jz.

hey quick question about all this how much faster is a 1jz-gtte than a 7m-gte if every thing else was as similar as possible with the exception of the trans?

just wondering 'cause im thinking of doing this swap too but don't want to if i could be sly about it.

Well I'm not trying to sound anti-jz here because I really do like the engines, but if your going to compare them like that you must think of a few other things. It's going to cost you roughly $2500 to swap a 1jz in, then you'll have a stock 2.5L with a whopping 280hp. Put that same $2500 into your dying 7mgte, rebuild it, build it up, all the upgrades you can afford and you should have much much more reliable HP. The transmissions are the same, R154 manual and the A340 automatic. Also, again, ONE "T", twin turbo does not get "TT" so stop saying it already. The Toyota engine code is 1jz-gte, read the timing cover. Either way choose which engine you think fits you best for the way you drive, and don't forget to take into account every tiny detail like the wiring jobs, future maintanence, where to find parts, the usual. Good luck.

Preach On Brotha

so you're saying that if i worked on the 7mgte...slaped on a turbo and did some head work (upgrading cams, lifters, springs, etc.) i could have much more reliable HP than the 1jz? about how much more without touching the block? and do they have a twin turbo kit for the 7mgte? just curious.

If you're going through all the trouble of pulling the head to have it reworked then why not pay another $600-700 to have the block rebuilt, or pay alittle more and get stress relieved rods and some nice pistons that will support any HP you'll throw at it. If you want to just "slap" on a turbo then go ahead and do a 1jz/2jz swap, the 7m needs to be built/beefed up right, internally and THEN externally. IMO you also do not need to even worry about cams right now, so save the money for something else like springs, larger valves, and porting if you want the head work done. Just figure out how much you have to spend and then make a rough list of the parts you want for your HP goals, get qoutes from local reputable machine shops for how much a 7M rebuild will cost, maybe include the porting also (will raise the price up real quick).

So how much are we talking here???? money wise??? i have a 7mge on my supra and it hauls pretty good, but I'm the third owner and I think is time for a tuneup, u know how much thats gonna run around.?

And another thing.... i want to do the 7mgte on my car, but someone told me all I need is the ecu, turbo manifold, boost gauge, and lower compression pistons, but me, that has never worked on a turbocharged car, I don't want to fuck it up.

projectsupramkIII can you give me some sites which would be the best for me to start getting those parts?
the best price best value deals. thanks

thats what I just asked

<has an 88 with 2jzgte, so from experience the 7mgte is a turd

and I'm sure your car is a rocket out of the hole and down that 1/4 mile or stretch of interstate. If you even have the car...or A turbo, let alone 2 of them

either way the $$ will be about the same for the stock 2jz or 1jz w/tranny+ecu as 7mgte with all new parts w/tranny+ecu .

Your a crackhead, Let alone that the almighty 2jz has to have the transmission replaced after you break 400HP and after you hit around 500 HP your replacing your entire fuel system so there goes your ecu. ON TOP OF THAT, when you do decide to run those high 700 and 800HP numbers on the car after you have some miles on the car, your looking at an engine rebuild, so tell me again, why should he get ethier one?

tranny with 7m is garbage too, lol id go jz, less headaches.

As stated up in my last comment, your a crackhead.

P.S. save the wise ass comment back to me, I dealt with all of those "less headaches" you say there are.

need I say more, flying mkIV basically just left yall with the SHIAT back in ur face. much props to u flying mkIV

My last post was not to be mean to everyone, I just can't stand when someone asks a legitimate question about what he should run, and every "supra owner" comes out of the woodwork to give their advise when they can't even get the engine code right about the motor they are sharing their all knowing knowledge about. I don't know enough info on the 7m or the 1jz to give anyone advise on this matter, but I do know about a 2jz. For any advise on this matter, I would send these questions to project, he has helped people countless ammounts of times on MKIII questions. He clearly knows his stuff when dealing with them. I normally handle the 2jz stuff when I know the answers. But anywho, to the person who asked the questions and for all the people who have questions, good luck, and let me know if I can help.

Yea I'm sorry I haven't answered this one yet, I had a huge page long post and I went to open a new window then BAM... clicked the back button. :mad: I'll retype it all tomorrow when I feel less angry. Thanks for the kind words flyinmkiv.