i need some good points for both engines. i know both engines have their pros and cons but i want the engine with the most performance satisfaction.please state what you think of these 2 powerful, potent engines..
7mgte vs 1jzgte
- Thread starter blitzsupra
- Start date
- Status
7M
- Parts are easy to get from any Toyota dealer
1J
- Stock gaskets are metal, no BHG issues.
- Higher power in stock form
- Higher rev limit in stock form
- Parts are easy to get from any Toyota dealer
1J
- Stock gaskets are metal, no BHG issues.
- Higher power in stock form
- Higher rev limit in stock form
oh noes *another 1j vs 7m*
fix the 7m right she'll pull some power
as said above parts are easier...... much much easier (i'm so jealous of the support for the 7m over there)
1j has cool power out of the box
reliable in stockish form
parts are a pita
fix the 7m right she'll pull some power
as said above parts are easier...... much much easier (i'm so jealous of the support for the 7m over there)
1j has cool power out of the box
reliable in stockish form
parts are a pita
7m's will just about always put out more torque(thats what wins races)
Your talking 3.0L vs 2.5L. Look at the facts Dynos. Ijs do sound and look nice though.
Your talking 3.0L vs 2.5L. Look at the facts Dynos. Ijs do sound and look nice though.
yeah thats what i figure. i know the 7m engine has a huge aftermarket over here in north america. i think the 1JZ is a great engine.. capabe of big power gains with little bolt ons and its pretty much the older version of the 2JZ. i was just wondering about the prices for parts on a 1J compared to the prices of the 7m? i have the 1GGTE engine in my car right now and thats right a 1G in north america haha. virtually no parts here in north america so im in need to get rid of this engine and go on with something better
^ i can get you 1g parts 
stock that is lol
aftermarket you need custom ex mani to fit a big turbo.... but there is more power to be easily gained out of a 1j/7m
stock that is lol
aftermarket you need custom ex mani to fit a big turbo.... but there is more power to be easily gained out of a 1j/7m
my car is right hand drive with a 1ggte. not many rhd supras in this side of the world. im gonna dump the 1g set up sooner or later. i really want the 1jz but thinkin the 7m would be a better choice. i plan on transforming my car into a 450+ hp beast. the ga70 is so rare...
i hope it's 1990 + so it's widebody too
i would assume; no tems, no abs, probly hardtop if it's 86-89
hah you should see what we're doing to ga70's here... you would probly choke me lol... it's a part out car, and sending it to the wreckers, we gave teh engine away.. we have no use for 1g's... so if you do need random parts in the meantime let me know i've more than likely got what ya want
i would assume; no tems, no abs, probly hardtop if it's 86-89
hah you should see what we're doing to ga70's here... you would probly choke me lol... it's a part out car, and sending it to the wreckers, we gave teh engine away.. we have no use for 1g's... so if you do need random parts in the meantime let me know i've more than likely got what ya want
yep its a 90 widebody twin turbo. the body is mint and interior is mint. i bougtht the car with very low mileage. maybe ill just blow up the engine and then swap it haha.
1J is a far superior motor as far as engineering is concerned. The 7M is the last revision of a long successful line of Toyota motors and has stood the test of time. However, compared to the 1J, the engineering is without a doubt antiquated. The 1J appears to be more tolerant to people who don't maintain their cars i.e. oil levels etc, with the 7M requiring more attention to detail. The 1J (and I have ridden in several) in my opinion is kind of lame on the street with all the power being in the top end of the RPM range. It is great for going fast down the freeway with a very smooth power band provided by the twins. The 7M owns the stoplight to stoplight pulls with its lower rpm range and torque but falls on its face above 6k rpms (unless you spend $$$ on headwork to make it rev). The 7M is very affordable to get into 400-425 rwhp range and maintain reliability. You will spend 5k to 6k on a swap and have a used motor that might be 350 hp with some good tuning. Not to say you can't make the 1J a 450 hp beast, you can, but it will cost you much more in the end. When you start getting in the 500hp + range, its a different game and its going to cost you to play in the big leagues. The 1J will probably win in this arena, with the 1J being able to handle more hp on stock internals compared to the 7M. But really, what are you going to do with over 500hp on the street??? To me, this is not a daily driver. It really depends on your driving style and what you want to do.
I have been on the fence on which direction to go, but I am staying 7M. My 7M has very high mileage. Sure the valve stem seals are going, and I may have some blow by on the rings, but the MHG is still holding strong and the motor has power enough to get the car sideways in the road. I know the abuse I am giving it may shorten or terminate its life, but I will beat on it until it dies. In fact, I have the money set aside to for a new factory shortblock rebuild... but why pull a motor that is still going strong? I have intentionally been beating the hell out of the motor hoping it would die, so I can proceed with the heart transplant, but the 7M won't let go! The 7M is one heck of a motor and can run 450 hp all day long on stock internals. Keep the oil full, perform routine maintenance, and drive hard.
I have been on the fence on which direction to go, but I am staying 7M. My 7M has very high mileage. Sure the valve stem seals are going, and I may have some blow by on the rings, but the MHG is still holding strong and the motor has power enough to get the car sideways in the road. I know the abuse I am giving it may shorten or terminate its life, but I will beat on it until it dies. In fact, I have the money set aside to for a new factory shortblock rebuild... but why pull a motor that is still going strong? I have intentionally been beating the hell out of the motor hoping it would die, so I can proceed with the heart transplant, but the 7M won't let go! The 7M is one heck of a motor and can run 450 hp all day long on stock internals. Keep the oil full, perform routine maintenance, and drive hard.
Last edited:
Really? As far as I knew, it's a slightly different design, but the technology is pretty much exactly the same.csnow said:
They have a wider centreline for the valves so you can fit bigger valves so ultimate HP potential is higher than a 7M as for the rest they seem to be an evolution of what they learnt with the M series.
Grim, I would say IJ said it better than myself...."an evolution of what they learned in the M series" The turbo was a late addition to the M series of motors. The 1J was designed for turbos at the onset.
That is really what I was questioning. Is there a significant difference between an engine that has had a turbo engineered into it later in life, as opposed to one that was built for it from the ground up?
They both have the same type of valvetrain, crank, and block. They both have the same features. The IJ has a different bore and stroke, and comes stock with metal gaskets. The IJ also has a host of different features outside of the longblock, but I really don't think those count.
My opinion has always been that the 1J isn't a better engine - it's just different. IMO the reason we have many 7M failures is due to the people who own each type of engine.
A typical 7M owner is a younger fellow who buys a fast import that is very cheap - 7M Supras can be had in the USA for under $1000. They often don't have much mechanical experience, and don't take good care of their engine. You will notice that the 7M guys who DO know what they are doing are pushing stupid amounts of horsepower very reliably.
A typical 1J owner (in the USA) is someone who has spent several thousand dollars and hundreds of hours swapping an engine into their Supra. This is a person who has money, knows where to spend it, has lots of experience turning his own wrenches, can fix just about anything that fails on any platform, and knows what will cause just about any type of failure.
Cliffs: 1J owners don't run low on oil because they know better - and a 1J will fry it's bearings just as fast as a 7M if you run out of oil.
They both have the same type of valvetrain, crank, and block. They both have the same features. The IJ has a different bore and stroke, and comes stock with metal gaskets. The IJ also has a host of different features outside of the longblock, but I really don't think those count.
My opinion has always been that the 1J isn't a better engine - it's just different. IMO the reason we have many 7M failures is due to the people who own each type of engine.
A typical 7M owner is a younger fellow who buys a fast import that is very cheap - 7M Supras can be had in the USA for under $1000. They often don't have much mechanical experience, and don't take good care of their engine. You will notice that the 7M guys who DO know what they are doing are pushing stupid amounts of horsepower very reliably.
A typical 1J owner (in the USA) is someone who has spent several thousand dollars and hundreds of hours swapping an engine into their Supra. This is a person who has money, knows where to spend it, has lots of experience turning his own wrenches, can fix just about anything that fails on any platform, and knows what will cause just about any type of failure.
Cliffs: 1J owners don't run low on oil because they know better - and a 1J will fry it's bearings just as fast as a 7M if you run out of oil.
Ya, the 1J can be seen as "better" because since they designed it to turbo from the start, they could engineer the intake plenum and head etc for maximun turbo benefits. I'm with Grim tho, it's just a different engine, not better as a whole but it may excell in certain areas, although the 7m can easliy match it with proper time/care taken.
eric
eric
- Status