7m-ge+turbo or 2jz?

[88MK3.]

ok ive been looking around and trying to figure out wat to do. i wana just turbo and build my 7m but ive seen alot of ppl say it just cheaper to do a 2jz swap.. but when i looked into that thos ppl said it would just be cheaper building the 7m... whos right wats cheaper and easier? i woulda like to build my 7m cuz in my eyes it would be a lil more rare then a jz swap but i wana no my facts first...

 

[satx88supra]

Well to me a 7mge+turbo would be easier if you already have the bottom end in good shape. Just a new intake, maybe a new 7mgte intake cam (ive heard its not needed), ecu, turbo, exhaust manifold, and inter cooler. A 2jzgte swap to me is more labor intensive. You'll need new mounts, rewire alot of stuff or pay someone to build you a harness if you're not sure of your splicing skills, bell housing to match the R154 tranny.......and much more. So.....for easy......7mge+turbo. My bro in law is $5000+ into his 2j swap.

 

[Supra NA-T]

get a 2JZ-GE and a TT HG then get a cheap turbo kit and there u go

 

[akito]

7mgte swap = easiest and cheapest and probably the most reliable option right now for you ( assuming the motor/trans is in good condition...HG replaced and properly torqued)

 

[emericaskater285]

First off what are your power goals. Set that first, then decide accordingly.
I would stick with a 7m. You should be able to pick up a used 7mgte for a reasonable price, and swap it in. A jz motor is a lot more work than a 7mge to 7mgte. (I know I am leaving a lot of stuff out, but this is a short answer.)

 

[empera]

7m rare? heh....

if you have the money...go with the 2jzgte, 2jzge-t, or even a 1jz...if not save up. I will never trust a 7m again (my personal experiences).

my .02 cents

 

[88MK3.]

well im aiming for 4-500hp nothin to monstrous and the engines in amazing shape and i wanted to stick the the ge and add all the gte sensors and wat not to for the higher compression should make a lil more power with the same turbo set up as the gte, just gatta run high oct and a fuel cooler and retard the timmin a lil to keep down the knock

 

[jdmfreak]

4-500 and u already have a good engine..... i would stick with the 7m

 

[hvyman]

Better have a proper mhg and a good tune.

 

[88MK3.]

but be sides tuning, done any one now the increase to comp ratio by labs of boost? not all that woried bout bloing the engine with anything under 15-20psi but im trying to calculate wat octane ima have to use and how cold ill have to get the air and fuel to prevent detonation dose any one no or is there eaven such a relation?

 

[hvyman]

The higher the better. It all depends on tune. Water meth would help. So would e85 if it's around you.


Bottom line with stock na high comp pistons you need to make sure there is zero detonation.

 

[88MK3.]

Well ima run a co2 fuel chiller, a fin fuel chiller electric fans on the intercooler and co2 cooling on it to with a higher oct and everuthing i have planed i shoulkd be good and if all else fails ill retard the timin a bit

 

[Supra28]

7m rare? heh....

if you have the money...go with the 2jzgte, 2jzge-t, or even a 1jz...if not save up. I will never trust a 7m again (my personal experiences).

my .02 cents

You seemed to have had a pretty solid 7M, what happened to it?



88MK3, sorry for being a lil' off topic there. But to answer your question, N/A-T 7M. I don't know if you're planning to pull the engine when going N/A-T, but if so a GTE would be easy. The 7M and jz topic has been brought up more times than you can believe here on SM, so some searching wouldn't hurt neither.

 

[88MK3.]

ya i was wondering the same thing

 

[hvyman]

You could ditch all that co2 stuff if you just get a standalone. Or at min a maft pro. Mega squirt 3 is under 1000$ for a fully customizable full standalone.

 

[Orion ZyGarian]

I personally say N/A-T, be it turboing your current engine or building a 7M-GTE to be ready to drop in. Regardless of what powertrain you use, you should really consider making sure the engine is healthy before doing all of the work involved in the swap. What good is dropping in a 1J or a 2J thats 2 decades old just to find out the rings are shot, or it leaks oil everywhere? Same with a 7M.

I'm not sure you know what you're going for with those crazy cooling setups. Plus, are you ready to source CO2 however often you need to, just to keep some fuel and the intercooler chilled? Good luck hitting 15-20 psi reliably with N/A pistons too; in addition to having too much static compression, they seem to be pretty weak.

In my opinion, you're going to want to do many many more hours of searching and researching this project on the forums, and make sure you're ready for things to go wrong.

 

[88MK3.]

the co2 will only be for when i really wana put my foot into it an race other than that it wont be used and the point behind the cooling set up is to prevent detonation at high rpms when boost will be highest normal driving just the raise in octane should be enough to stop detonation and maybe a slight retard in timing.

 

[teamslow]

well im aiming for 4-500hp nothin to monstrous and the engines in amazing shape and i wanted to stick the the ge and add all the gte sensors and wat not to for the higher compression should make a lil more power with the same turbo set up as the gte, just gatta run high oct and a fuel cooler and retard the timmin a lil to keep down the knock

There's a big difference between 400 and 500 horsepower. you can probably achieve 400rwhp on a upgraded ct26. 500rwhp requires a lot more money. The cheaper route in the short term is a 7m. If you want to save more money in the long run, buy a 2JZ. I still own a 7m, but if i could do it all over again, i would go with a 2JZ.

 

[satx88supra]

Also ....are you planning on upgrading the internals...pistons, rods, oil pump? Shooting for 4-500hp and no heart surgery is asking for trouble and another person complaining about 7m reliability. I still think the n/a-t is cheaper and right in your goal range. Plus its easier. How much are you planning to spend?:nono:

 

[88MK3.]

right now i have no set budget and i get alot of stuff at discount ima buy a separate 7m block and build that with all foraged and use the plane block as the test subject when it blows just swapo everything to the new better built block