Why I ditched my 7MGTE and went 2JZ NAT with AEM

supra87t/t4

Phase Two
Apr 9, 2005
219
0
0
MPLS, MN
I think this is going to become a popular swap, there are several others working on similar setups.

I can see the 2JZGE and AEM for ~$2000, but the turbo stuff is going to add quite a bit to that. And waht are you doing for a trans?

Why did you post this in 7MGTE tech? There is a whole sub-forum for this stuff.

Glen
 

p5150

ASE and FAA A&P Certified
Mar 31, 2005
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Central Idaho
Yes, the turbo stuff will add up, but no more than it would for the 7M. A turbo is a turbo, and the braced manifold was only 170 bucks. Turbo lexus setups can be had for under 200 bucks from ss autochrome and they include the downpipe, intake pipe, mani (unbraced) and wastegate dump tube.

R154 for the transmission with a 1jz bell housing and 1jz clutch.

If I posted in the 2JZ section would you say the same thing? Its about 2jz and 7m so this could go either way. I thought more people would see it here. If you want to ask any technical questions about the 7M in relation to the 2JZ i just put together I can probably answer them - ive rebuilt a few.
 

supra87t/t4

Phase Two
Apr 9, 2005
219
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0
MPLS, MN
Sounds like you have everything covered, just wanted to make sure you and everyone reading this knew it was going to be well over $2K to finish.

What 7M specific engine stuff will you have left in the car? Just the CPS, right?
 

p5150

ASE and FAA A&P Certified
Mar 31, 2005
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Lets look at cost differences - that is, costs that are UNIQUE to each powertrain to make safe for 500+ hp and give both engines similar performance characteristics. These estimates do not include other things like injectors, turbo, manifold, etc because you would have to purchase those for BOTH motors anyway....

Yeah, a 2jz will cost over 2k to finish. But its easy to drop that on a 7m to get a similar built engine and you still wont have an EMS. Look at the following:

7MGTE-----------------
OS valves that will be the similar (but still not as big) to 2JZ valves $500 minimum (if you can fit a good set of 2jz valves in a 7M head) 1500 minimum for a Ferrea valvetrain.

Forged pistons $600 minimum

Stronger rods $400 minimum

Machine work $400 minimum

Higher idle oil pressure and no scored cams - - - Please let me know how much this costs and how to do it......

ARP rod/head bolts - $50

TOTAL - ~2000-3000

2JZGE --------------------------

Good used engine with harness- $400-700

Machine work for resurface - $50

Thick Head gasket - $300

1jz Bell housing and flywheel - $500

BIC motor mounts (if pre 89) - $175

AEM EMS - $1400 shipped (shop around)

TOTAL ~3000 (1500 w/o EMS)
 
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suprarich

Guest
Nov 9, 2005
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ohio
I like the idea, check out boost logics web site for some pre thought out na-t packages. I think they even give you maps for the aem ems.
 

p5150

ASE and FAA A&P Certified
Mar 31, 2005
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Central Idaho
MKIIINA said:
just one question, why is this in the 7MGTE section.... maybe swap would be more approprate?

I have included a lot of technical reasons as to why the 7M is what I moved away from. I think it is very much about about 7M tech. If you want to get more technical ask some 7M questions.
 

supra87t/t4

Phase Two
Apr 9, 2005
219
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0
MPLS, MN
Good question, haven't heard an answer to that one yet. There is a thread on the AEM forums about it, and I also started threads on SF and clubna-t.
 

89supturbo

New Member
Jul 28, 2006
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Delmar, NY
where did you get the EMS for only 1400, and did it include the wideband and o2 sensor options? when they were a bit newer i remeber seeing them closer to that price but nopw it looks like it would cost at least 2k
 

p5150

ASE and FAA A&P Certified
Mar 31, 2005
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36
Central Idaho
89supturbo said:
where did you get the EMS for only 1400, and did it include the wideband and o2 sensor options? when they were a bit newer i remeber seeing them closer to that price but nopw it looks like it would cost at least 2k

Shop around - SF and there is one person on this forum that you could probably get it from....
 

SMP142

BOHICA
Jan 5, 2006
367
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16
Tacoma, WA.
so as far as power goes, everyone feels a 2jz with stock internals and a standalone can perform better than a built 7m with a standalone?
 

p5150

ASE and FAA A&P Certified
Mar 31, 2005
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Central Idaho
SMP142 said:
so as far as power goes, everyone feels a 2jz with stock internals and a standalone can perform better than a built 7m with a standalone?

Yes - I cant think of one reason why not. I wish I would have had the opportunity to go this route sooner

Keep in mind that only recently have the ebay manifolds become available. Everybody talks trash about them because they are inexpensive. I got one from a guy in Canada- braces included on the runners for under 200 bucks... Cant beat that. It looks very well put together.

The 2jz cams are much beefier, but the basic construction of the head is the same.

Think about all the money people spend on 7ms to make them able to handle 500+ with forged pistons and rods. And compare that to the amount of power people are making with stock 2jz blocks (with valves that are already 1.5mm BIGGER than the 7m valves, stout rods from the factory)