7m vs 1jz
 

what are the pros and cons of the two engines and which one do you think is better over all

I personally like the 7m, junkyard and aftermarket parts are more numerous and cheaper. you can make just about as much HP as you want with the 7m, same for the 1j, but, go to your local junkyard and see which ones are available and for how much. So if you break something, you can replace it quickly. Thats just my opinion.

similar power can be pulled from both engines, but the jz will take it for longer. the m series block has been around for 30? years now, so is getting a bit long in the tooth and should really be put out to pasture in my opinion. however toyota_guru is right in that the 7m's are cheaper and more readily available, so when you blow something, it would be easier to find a replacement.

Better overall engine, not taking into account price, i would say the 1jz. 7Ms are old, but simple maintenance is all it takes to keep them running, the internals are strong, its a 3 litre, it has a lot going for it... On second thought, i cant decide now which i like more.. lol What a waste of a post!

mans got to know his limitations... mines cash... 7M all the way...:bouncy:

Yeah...
 

I think I'll have to go with it too, because of that.

i think you know my answer....i got the big boy motor in my bad boy car hahaha, 1jz...but i aint hatin on the 7m...i had one before the hg blew, so mgiht as well swap motors right?

Hrm..
 

Did your 1JZ come from a Soarer or from a Supra? All the ones I can find here came from Soarers, and I heard it doesn't fit as well as the one that came with the Supra, you have to make more "custom" stuff to put it in there.

ya, i saw a used jdm 1jz in the paper here for $3500, i can get (4) 7mgte's for that price...or (2) running cars. hahhaha but if i had the extra cash, i dunno, :dunno:

i haft to go with the 1jz because i own both.... but if you replace the headgasket on the 7m its not a bad choice but the 1jz can handle alot more power if you asked me.

You can have a built 7m for the cost of a 1jz swap and still have no problems with emissions or inspections.

my motor came from a supra...oh and joel...we alrdy know 7m's are nice cheap motors..just casue u can get 4 of those for only one 1jz...doesnt make u better than us...does it?

never said i was better, just smarter..and poorer...

EDITED up till the other day, i had been totally joking around with you, (like kidding)
but you seem to be taking it personally,, sorry if i hurt your feelings. i did not realize you were so sensitive..

nah i know ur kidding...that seriousness that seems to come out is my sarcasm, hahaha its all fun and games until someone gets their eye poked out, thats what my kindergarten teacher told me once....all i remember was my 5th grade homeroom teacher was hot hahaha

cool man, glad your kidding.. sometimes its hard to tell with text. :)

And so ends another episode of Joel accidentally pisses someone off... but not really, hehe =b

Call me old fashioned but i like the simple to fix tolerant to tom-foolery 7m. Although the JZ series are the real power houses, i think the 7ms will be around forever. Just too reliable.

yeah i dont mean to piss any one off... ever.. if i do, let me know, ill try to be more friendly.. i kid around sometimes in good fun but i dont mean to offend anyone...

i think we can all agree the 1jz is a awsome motor, with more power potential than the 7m. but if your on a budget, think 7m.. if not go 1jz..

is it hard to get parts for the 1jz ? i mean are the parts on the shelf or are they all special order? like alt, starter, waterpump, gaskets, seals, type parts??

nah its not hard to get parts for a 1jz...they just a long time to get to wherever it needs to get, i really didnt have much of a problem since i made sure i ordered everything before starting the install

i dunno but if i keep dragging my feet and dont get any money i might start lookin for a 1jz

I'm kinda personal to the 7M myself, but that's also because of my pitiful income... But if I won the lottery I'd get a 1JZ. :-)

How much HP can the internal parts in these engines handle with turbocharging?(I`m thinking of piston, rod, crankshaft, head etc.)

I've had both engines and i think the 1jz is obviously a better engine over all. Having said that, i miss the sound of my 7mgte. much tuffer than the 1jzgte...

Someone on another forum just put down 511whp, all stock internals other than metal HG and Arp studs (7m).

Yeah.
 

That was impressive.

The parts for the 1JZ are not necessarily hard to get a hold of...anymore. As the swap becomes more and more common, the parts that are not direct replacements w/ the 2JZ (It's a long list!) can be gotten by many companies in the states that stock these parts. Champion / Jay Marks Toyota stocks many 1JZ specific Genuine Toyota parts. I think you just have to be more resourceful in getting the parts that you need. Sometimes you have to trick the Autoparts stores into giving you the parts that you need and not bother w/ what car it is for. That being said...it's still not cheap. My total investment so far in this swap is $4,500 ish and I still have a short list of parts that I need to get still (clutch being the most costly of them). It really comes down to commitment and money. If you want to work w/ this engine, "you've got to ask yourself one question...how do you feel about full frontal male nudity?" (-Waiting) Just kidding, but you do need to know if it's worth that much money to you to have a JZ motor in your MkIII. With as much money that I will have invested in the swap ($5,000ish) I will be pushing about 300hp to the wheels...with that much money you could build a monster 7m and all the supporting hardware to have well over that much power.

Nice!
 

Nice post, very informative.... and the joke was indeed funny. =P

Thanks...I wasn't sure if the joke would come across well, but I decided to run w/ it anyway. Now I'm glad I did. I don't post too often, but I try and only chime in when I have something remotely intelligent and somewhat helpful to say. <---which isn't very often, hence the low post count. ;)

Do yoy know how much HP the internal parts in a 7mgte can handle? I`m considering bying me a 1JZ engine to build on, but since the 7m engine is cheaper, maybe that is an option. If it can handle alot of power of course...

around 600HP

If you bothered to read this thread you could answer your own question...

BURN!!!! wait that wasnt a burn really... i take that back, sorry.

here are a cople informative websites for you people planning on a 1JZ swap into a MK3.. Also a comparison for the 7m-gte 1jz-gte and 2jz-gte... step by step upgrades and approx. cost per hp.

http://www.1jz-gte.us/92Supra8.html (Parts Listed w/ toyota Part numbers: ALL AVAILABLE AT THE DEALERS just need to be ordered.. My parts took 2 days to get in).
http://www.1jz-gte.us/92Supra7.html (FAQ, and that guys opinions).
http://www.jza70.com/articles/engine...omp_chart.html (Break down of 7m-GTE, 1jz-GTE, and 2jz-gte swaps)


You be the judge, but the results I've seen have me all over the 1jz as my pick.