I have a MKIII Turbo 88 just bought it for 300 bucks and i want a power plant with the most ability for high power ive seen a 1500hp 2JZ and i was wondering if the 2JZ could be swapped for my 7MGTE i know it will piss off some of the 7M lovers but heh i wanna have lots of power at my foot and if i am going to spend the money why stick with the 7mgte please all give me cons pros of the swap also what kind of power can i be looking at for a 1jzgte?? and also maybe a list of all things needed for swap i found a
complete TT 2jzgte with 6spd trani i know ill need the ecu and that engine and trani is JDM but will the wiring be the same or will i need a new harness? pls all i need as much info as yall can give

Well there's a few problems with your ideas. One, how much power do you want exactly? The 7M-GTE can hold up to 500 hp on stock internals. Why swap if you can get what you want that way. Second thing is you have the wrong year to do a JZ swap to. You'll need a 89+ crossmember with the fluid filled engine mounts for a JZ swap. After that, throw out the idea of a 1JZ. If all you want is massive amounts of power, then it's at a displacement disadvantage at a mer 2.5L. Lastly, you're not gonna have 1500hp just by swapping in a 2JZ. Lots of power is a relative thing, for me 300hp is insane. So I ask again how much power do you want?

Ok im wantin to go up into the 700+ range of horsepower now if i could do that with my 7MGTE i would gladly keep it but it has 144k on it so i dun think it could last up to it but then again i know nothing about these cars yet so i could be wrong i just thought a 2JZGTE for 7k including the harness and 6spd trani was a damn good deal the motor is complete but you say my 88 wont let me do the swap right? well what do you suggest then for me to reach my hp goals any suggestions are welcomed

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you say my 88 wont let me do the swap right?

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Yes, when they started to put JZ engines in the mkiii, they changed the engine mounts. You'd have to go to a junk yard and find the crossmember from a 89+ mkiii.

Now, 700+ hp, damn, ok. Well if you stick with the 7M it's possible. You'd need a built bottom end, metal head gasket, and one big ass turbo. A couple of months ago some one made 600rwhp at 27 psi. 700 hp is possible and much cheaper than swapping a 2JZ, cause the most you'll get out it for free is 400 hp with a down pipe. After that things get expensive quick.

The 7M engine bottom is from the 60s the 2JZ is from early 90s. There has happened a lot between the engines, and the 2JZ is known to be a great powersource holding for a lot of hps. So I think you should go for the 2JZ and 6-speed gear box. There is much to do but I think its worth it in the end.

Yes but also think of the practiality of having a 2JZ I meen alot of people are talking like makeing plans of doing it but never do primary reason MONEY! But if you got the cash then I say you do it anything is possible if you have the money for it just I think the 7m woud be plenty for you i meen have you ever driven 400hp its scary and I know yall are thinking well your talking of building a 1200whp supra why are you saying this well im just having that for show and rare occasions where I take it out im getting a 4 runner for the daily driver.

For a fraction of the $$$ you can reach that goal with the 7M. It will require a bit of wrench time and upgrades to the internals and fuel system however.

Yes the cross member would have to be replaced because mid way thru the 89 model year, Toyota switched the motor mounts and cross members to accomidate the JZ series engines in Japan. Also, the stock 2JZ, even with the the 89+ crossmember, won't fit in the engine bay with the stock twins. The rear turbo hits the firewall before you can even finish dropping in the motor. There are ways around this, but be prepared if you go 2JZ, you are going to be doing A LOT of modding to get things to fit, at a much greater cost end the end than the 7M for the same power. This is just my opinion, but I have seen how these motor swaps go...

the engine you bought, was it an JDM or a USDM motor? the reason i ask is because the JDM harness is gonna be short by like 3 feet, reason why is the fact that JDM motors have harness for a RHD car not a US spec. LHD. so your looking at another 1400 on a new harness or you can go ghetto and just extented each one of those 120 to 150 wires of the harness.

my opinion,I'd go 2jz. If you have all the egr and smog equip, you can actually register it for the street legally. The 1j, never because it was never sold in a supra for the usa(you can get around it though). If emission compliance is not an issue, i'd still do the 2j or a toyota v8tt because the mk3 is heavy. Also, I heard from a credible source that the 7m head wont flow more than 600rwhp worth of air unless nitrous is used. The 7m is really a torque monster, whereas the 2j is really flexible at both hp and torque depending on turbine sizing and stroker kits. The 1j is a better motor all around than a 7m(both stock). but With a properly built 7m, it can be just as bulletproof, achieve just as much hp with more torque, and be cheaper all around than a 1j set up.1j's are like 2800us+motormounts/ crossmember if you dont have them. Thats a 7m with headstuds,mhg,forged pistons a turbo and probably some coated piston tops,skirts,main and rod bearings and probably some little others.

look there is no way in hell your getting forged internals plus all that coating and $hit for 2800 the pistons and rods will cost you 1400 alone a decent turbo another 1000 and you cant just slap a bigger turbo on there you need the mani plus standalone if you dont plan on using that damn airflow meter which means you need injectors if you plan to do that bigger afm swap overall building the 7m is a bad idea believe me ive been there and its a better idea to do a 1j or 2j swap. better design, especially intake mani's plus they can rev past 6000 without doing a full rework of the head witch will be another 1200 bucks for the good valves springs and retainers. do not waste your money on the 7m the head sucks and the design of manifolds as well. get a 1J from osakajdmmotors for 1500 shipped with the damn tranny and start with 320 instead of 240hps the crossmember youll find in a junk yard for like 200 bucks and bam the swap is cake you could do it yourself. the harness is not a problem and it would not be no 1400 for a new one just extend the wires for 20 bucks on a spool of wire and some soder take the hour or two and save the money. 1j or 2j if you got the time is most definitly the way to go. besides all you got to do is swap the botom end of the 1j with a 2j and you can get the 3Liters anyway.

The thing wit fitting the 1j n 2j is that they wont fit in ur year, but if u get an 89+ supra u can fit either, also the 89 looks better....alot of ppl think there the same other than the tail lights but its actually wrong, the front bumber is different and theres a few minor details, n u can fit a 2j into a 7m supra, all u gotta do is convert the twins to a single turbo and it will be better if u tune it rite....oh n 4 those of u that keep sayin that the 2j is better than a 1j dont know nothin bout a 1j then b/c u dont wanna give it a chance...yeah tha 1j is a 2.5L but what that means is that tha 1j has a shorter stroke which means the bottom end is strong n means less likely to break somethin down there, a friend of mine has gotton to 1000hp on a stock bottom end in a 1j so u tell me whats up wit that(he's at 1400hp rite now, wit the help of a new bottom end of course)

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i just thought a 2JZGTE for 7k including the harness and 6spd trani

Sucks to be you. Mike Malloy (malloynx) has now made 600+ horsepower, which was 543 to the wheels with a bolt on turbo with the stock 7MGTE engine. And by the way, his turbo cost one third of what you spent just for the engine he got for free. And it was tuned using MAFT-Pro which costs all of $500.

And yes, there was probably trial and error and time tuning. But any car approaching 700 hp will need it.

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a friend of mine has gotton to 1000hp on a stock bottom end in a 1j

Post the dyno.

Since we're all into this subject, I like to ask a know something before this subject gets old. 1st of all, if the 2jzgte (single turbo) will fit the MKIII chassi? And so would the 6spd. tranny fit the MKIII chassi as well without cutting modifying to fit? If it would be a easy drop in than man, why not? I'm just curious. I like to collect as much info as I can. If it starts to get way too complicated, then I might as well build up my 7MGTE. I know the 1JZGTE will fit but man, I live in freaken California where they never stop smogging cars. welp, let me know wassup.

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There were to 2JZ transplants at Vegas this year so it works. I am certain the Getrag does not fit with out extensive modification.