1jz or 7M-GTE in a 240?

[Mangudai]

Is this feasible? I always hear talk of the 2jz but was wondering what it would take to fit a 1jz or 7M-GTE in the 240 chassis. I searched and didnt see any mention of this.

[the_momo]

any motor swap is technically feasable. im going to go out on a limb and say that a 2jz, a 1jz and a 7mgte are going to be about the same amount of work to install. there have been a few 2jz swaps. the others i dont know about personally. good luck either way.

[WDRacing]

1JZ

[XofXtimeX]

The 1J would be probably the worse decision out of all of them to try and put into the car being as that engine was never put into anything over here so it is more expensive to get parts for it.

I had a MK 3 supra...7M is a good engine....but it's so much easier to work with a 2J because you can leave that thing stock till 1000 hp pretty much internal wise.

[WDRacing]

Whats the difference price wise though. The 2JZ is fairly expensive. There were about 9 billion MKIII's made...lol. So there has to a good market for used motors.

WD

[XofXtimeX]

Oh the price difference would be huge lol. Just depends on your power goal... I believe the highest horsepower 7M is 730 HP.. and they spent quiet a bit trying to get it there...If you were staying in the lower horsepower range the 7M wouldn't actually be that bad really. But if you're shooting for 500-600 range it would probably even out somewhere around there with going 2J and being a lil easier on the engine..Both engines are extremely reliable when taken care of though.

[Mangudai]

Well that puts things well into perspective lol. Thanks for the replies.

[CryoSlash]

Oh the price difference would be huge lol. Just depends on your power goal... I believe the highest horsepower 7M is 730 HP.. and they spent quiet a bit trying to get it there...If you were staying in the lower horsepower range the 7M wouldn't actually be that bad really. But if you're shooting for 500-600 range it would probably even out somewhere around there with going 2J and being a lil easier on the engine..Both engines are extremely reliable when taken care of though.

Since you don't have much background with the cars, i understand why you think that 730hp is the highest hp 7m made. but yeah that was ages ago. the site known as 7mpower.com has not been updated in nearly 4 years, and since then, that bastard Will Neely is no longer the highest hp 7m. heck he doesn't even own a mk3 anymore, he traded for a mk4 supra. He built all his 7ms wrong basically, kept on blowing them up until he had a good formula. He had way too much money and not enough brains. but enough about him. Right now, we have more then enough 700 hp 7m's rolling around, and not with dyno queen turbo's either! They are street cars that some even use everyday. Duane, the white mk3 on 7m power, recentely broke 800 whp.... on a slipping clutch and no nitrous! heh so i guess that puts thigns in perspective. Also another NW owner also broke 700 a year ago too. there is also one in Europe somewhere with over 1000 hp, but no one knows how to get in contact with him. But yeah, the 7m is a gadget of a motor, and if shops do not know what they're doing, they will kill the motor by doing normal rebuilds on it. Trust me, i went through it already. But yeah, bang for the buck, the 7m cannot be beat. Also there is no 2jz that has made over 600whp on stock internals reliably, and the same for the 1jz. BUT the 1jz is a fun car. Right now, i have 2 supras in my house, my car with a 400whp 7m in it with a stock bottom end, and its my daily, as well as my brothers 1jz car, BPU 300whp 1jz. I will tell you what though, you will not be disappointed with either motor for your Z. But each motor does have it's kinks. The 7m's actually came from factory with a blown head gasket due to an undertorqued headgasket, and this would lead to rod knock because the BHGs on these motors was that the Coolant would leak down past the piston rings and then, well yeah coolant sucks for lubrication. So your best bet would be to just buy a block from supramania.com, crank, then do a full forged setup, get a head from anywhere and the little bits and pieces here and there.Also the 1jz's also have 3 problems of their own. Not as severe though. High horsepower 1jz's get crankwalk because most of the time, the owners do not bypass the clutch safety switch, therefore when you start it up, there is no pressure on the drivetrain, but when you let it go, well hell breaks loose. they also have a tendency to have bad ecu's, but since youre going standalone it wouldn't matter. But worst with them is that they are NOTORIOUS for blowing turbos. the stock singles are ceramic wheeled, so past 14 psi, they go kablamo! heh but going single remedies this quickly, and cheaply. Also just an fyi, almost everything off a 2jz fits the 1jz engine wise. Water pump, belts, etc. most of it fits, just be sure to ask someone with experience with these motors first before you go out and buy parts. i am starting to think that there are more 1jz's here then japan, because everyone and their mothers are bringing them in. But i will always stay 7m, it has retarded stroke from factory so it has retarded amounts of torque Well thats my .02... good luck man!-Thomas

[XofXtimeX]

Since you don't have much background with the cars, i understand why you think that 730hp is the highest hp 7m made. but yeah that was ages ago. the site known as 7mpower.com has not been updated in nearly 4 years, and since then, that bastard Will Neely is no longer the highest hp 7m. heck he doesn't even own a mk3 anymore, he traded for a mk4 supra. He built all his 7ms wrong basically, kept on blowing them up until he had a good formula. He had way too much money and not enough brains. but enough about him. Right now, we have more then enough 700 hp 7m's rolling around, and not with dyno queen turbo's either! They are street cars that some even use everyday. Duane, the white mk3 on 7m power, recentely broke 800 whp.... on a slipping clutch and no nitrous! heh so i guess that puts thigns in perspective. Also another NW owner also broke 700 a year ago too. there is also one in Europe somewhere with over 1000 hp, but no one knows how to get in contact with him. But yeah, the 7m is a gadget of a motor, and if shops do not know what they're doing, they will kill the motor by doing normal rebuilds on it. Trust me, i went through it already. But yeah, bang for the buck, the 7m cannot be beat. Also there is no 2jz that has made over 600whp on stock internals reliably, and the same for the 1jz. BUT the 1jz is a fun car. Right now, i have 2 supras in my house, my car with a 400whp 7m in it with a stock bottom end, and its my daily, as well as my brothers 1jz car, BPU 300whp 1jz. I will tell you what though, you will not be disappointed with either motor for your Z. But each motor does have it's kinks. The 7m's actually came from factory with a blown head gasket due to an undertorqued headgasket, and this would lead to rod knock because the BHGs on these motors was that the Coolant would leak down past the piston rings and then, well yeah coolant sucks for lubrication. So your best bet would be to just buy a block from supramania.com, crank, then do a full forged setup, get a head from anywhere and the little bits and pieces here and there.Also the 1jz's also have 3 problems of their own. Not as severe though. High horsepower 1jz's get crankwalk because most of the time, the owners do not bypass the clutch safety switch, therefore when you start it up, there is no pressure on the drivetrain, but when you let it go, well hell breaks loose. they also have a tendency to have bad ecu's, but since youre going standalone it wouldn't matter. But worst with them is that they are NOTORIOUS for blowing turbos. the stock singles are ceramic wheeled, so past 14 psi, they go kablamo! heh but going single remedies this quickly, and cheaply. Also just an fyi, almost everything off a 2jz fits the 1jz engine wise. Water pump, belts, etc. most of it fits, just be sure to ask someone with experience with these motors first before you go out and buy parts. i am starting to think that there are more 1jz's here then japan, because everyone and their mothers are bringing them in. But i will always stay 7m, it has retarded stroke from factory so it has retarded amounts of torque Well thats my .02... good luck man!-Thomas

You're right I don't have much background at all... Duane just recently broke 800 rwhp.. That's great and good for him. I used to watch his car and all his progress glad to see he made it. Although I'm not impressed with the 7M as I used to be. So 800 has just recently been broken. I was comparing the 2J to the 7M. The 7M has had a bit more years of being around to have technological advances and as I was trying to point out just doesn't have as much of the potential as the 2J does. You say there are more then enough 700 horsepower 7M's which is maybe just maybe like saying more then enough 1000 hp 2jz's floating around. So more of backing my point the 7m is a little bit more behind. Comparing duane though is like bringing out Markos car(now sold to whoever) or Ryan Woon, people are just not up to paar with them at all.

Soo...back to my point for a much higher horsepower goal range. The 2J is going to be better as it has more parts being manufactured for the engine and, it can be put to a bit more of a higher horsepower range than the 7M can be when so desired.

P.S. Saying the 7M came from the factory with a blown headgasket is a major over statement. These cars are 15-18 years of age and are having the boost turned up past stock boost. What do you expect to happen? I don't know about you but a head gasket lasting that long and for a while even when some people turn the boost up a bit on the stock CT-26 is a little impressive in my book.
Modified by XofXtimeX at 11:12 PM 4/3/2007

[CryoSlash]

You're right I don't have much background at all... Duane just recently broke 800 rwhp.. That's great and good for him. I used to watch his car and all his progress glad to see he made it. Although I'm not impressed with the 7M as I used to be. So 800 has just recently been broken. I was comparing the 2J to the 7M. The 7M has had a bit more years of being around to have technological advances and as I was trying to point out just doesn't have as much of the potential as the 2J does. You say there are more then enough 700 horsepower 7M's which is maybe just maybe like saying more then enough 1000 hp 2jz's floating around. So more of backing my point the 7m is a little bit more behind. Comparing duane though is like bringing out Markos car(now sold to whoever) or Ryan Woon, people are just not up to paar with them at all.

Soo...back to my point for a much higher horsepower goal range. The 2J is going to be better as it has more parts being manufactured for the engine and, it can be put to a bit more of a higher horsepower range than the 7M can be when so desired.

P.S. Saying the 7M came from the factory with a blown headgasket is a major over statement. These cars are 15-18 years of age and are having the boost turned up past stock boost. What do you expect to happen? I don't know about you but a head gasket lasting that long and for a while even when some people turn the boost up a bit on the stock CT-26 is a little impressive in my book.

Modified by XofXtimeX at 11:12 PM 4/3/2007

no seriously, the cars did come stock with blown headgaskets. i **** you not. they were failing on stock cars at 100 thousand kilometers, and even failed on my bone stock car as well! It's not an understatement. They were from factory torqued to 55 instead of what should have been 72. Boosting on the old motors always contributes, but i know of many many many stock 7m's just blowing head gaskets with low kms. But my point was that these cars do not have t88's to make 800 rwhp, or anywhere near there whereas more then half of the mark 4's use t88's and larger! And it has been typically true that the mark 3 with less power is faster then a mark 4 going down the track. Also we were talking about cost. if you track down the price of everything for a 2jz versus a 7m... you will about have 3000 dollars extra spending money for the 7m.

[mig240sx]

If I may, 1j all the way. You are looking at 2-3,000 bucks more for the 2j and for a 240sx (2800lbs.) you won't be able to keep traction to benefit from the power increase a 2j will give you.

http://www.southfloridaracing....41837

My boy has built two 1j cars and the first one was in a 240sx (daily driver) 400whp on only 440cc injectors.

http://www.cardomain.com/ride/2260807

His second car is a Lexus sc300 (1j) and it's dyno run was at 431whp (440cc, no internal mods).

http://videos.streetfire.net/v...f.htm

So, if you're looking for a daily driver (not a killer in gas) then go with the 1j. If you want more power, then get bigger injectors and you still don't have to touch the internals of the engine.

I'm currently having my '95 Zenki getting a 1j makeover, will be done in 2wks. (I'll post some pics soon).

PS. Yeah, you do want to go single turbo, the stock twins IMO aren't worth it.

[WDRacing]

Arguing over over which motor is better is like saying I like peanut butter more then jelly.

The 7M and 2J are both great motors. The 2J is one of the top 10 best motors ever made...period.

Arguing over how much power can be made with what is also kinda lame. If MAX power was the goal, then a inline 6 would not be my choice at all. For 1/2 the money you can slap on a set of twins to a rebuilt 454 and make far more power...

Money and power go hand in hand. When I was in Japan I raced several very fast MKIII Supra's. You don't have to have 700WHP to be quick. Anyone who says you do is an idiot.

Personally, I'm on a budget so the 7M would be a better option for me. But it's all about preference when it really comes down to it.

WD