JDM 7M-GTE vs. USDM?

[joeyd23]

i just got a 7mgte to reple my blown up stock gte, im not sure how much if any hp difference there will be, i know jdm motors typically push a bit harder becouse of emmisions. but i want numbers. anyone know? thanks

 

[eman2289]

Did you search? Im pretty sure this has been covered many times before.

 

[DegreE]

USDM has EGR

JDM has no EGR

 

[figgie]

USDM = JDM anyway as all those engines were produced in japan. As DegrE mentioned. Emissions is what sets them apart.

 

[shaeff]

Ugh. It's the same motor.

/thread

 

[eman2289]

I have always had a question tho. What cars did the "JDM" 7M come in? Did Supras come with them in Japan? I thought they were only 1js. (Im probably wrong)

 

[Dunckel]

Isn't the throttle linkage or rotor different too. Or the throttle body? I had to change something around when I did the swap, but that was 4 years ago, so I can't remember exactly. The oil sending unit is different also I think. But I could be wrong about that.

 

[j3pz]

Isn't the throttle linkage or rotor different too. Or the throttle body? I had to change something around when I did the swap, but that was 4 years ago, so I can't remember exactly. The oil sending unit is different also I think. But I could be wrong about that.

ya thats right. also since they didnt have a egr, they shouldnt have the port on the tb right? when i did my swap, the port on the intake manifold for the brake booster was turned also

 

[PROJECT N00b]

I have always had a question tho. What cars did the "JDM" 7M come in? Did Supras come with them in Japan? I thought they were only 1js. (Im probably wrong)

wikipedia will tell you which cars came with 7mge and the gte variant.

edit:

7MGE Applications:

* 1986.5–1992 (1987–1993 in Japan) Toyota Supra MkIII (MA70)
* 1988–1993 Toyota Soarer
* 1989–1992 Toyota Cressida Mark II (MX83)
* Toyota Chaser
* Toyota Crown

Specifications:

* Displacement: 2954 cc (180.2 cu in)
* Bore: 83.00 mm (3.27 in)
* Stroke: 91.00 mm (3.58 in)
* Compression Ratio: 9.1:1
* Weight: 119.5 kg (440 lb)

7MGTE Applications:

* 1987–1992 Toyota Supra MkIII (MA71)
* 1988–1993 Toyota Soarer

Specifications:

* Displacement: 2954 cc (180.2 cu in)
* Bore: 83.00 mm (3.27 in)
* Stroke: 91.00 mm (3.58 in)
* Compression Ratio: 8.4:1
* Weight: 119.5 kg (440 lb)

 

[RazoE]

the heater hoses are also backwards...

but if you reuse your own accessories and make your own heater hoses, you can get it to work...

 

[Poodles]

depends on the year of the engine.

pre-89 has provisions for both sides, 89+ is RHD or LHD specific. You can swap parts either way if needed.

 

[WhtMa71]

When i swapped a jdm motor into my car heres what was different.
-Throttle Body(JDM TB only has 1 vac port, USDM has 2, and rotor is different)
-Throttle linkage (JDM's cable goes directly to TB instead of having a huge bracket)
-Water Pipe that wraps around block
-Thermostat Housing (no bvsv)
-No EGR(block off plates)
and i had to swap motor mounts as the JDM motor was 89+ and my car is an early model 89.

-I just used the JDM TB and just swaped the rotor and the linkage.
-Swaped water pipe when i changed the HG.-I actually just ran the heater hoses backwards until i changed the waterpipe when i had to change a HG.
-Took out evap can and still used JDM thermostat housing.(my bvsv was broken and i didnt have an extra TB gasket so i just left it on there too)
-Oh yea and i had to swap the oil pressure sending unit so my stock OP gauge would register right.(now i have prosport)

The good thing about the JDM motor comming with a cut harness was that it still had every single plug that goes on the engine..and since i had a few broken plugs i swaped them over.

 

[lagged]

i know jdm motors typically push a bit harder becouse of emmisions.

not even close.

and sometimes just the opposite! the jdm 7m makes the same power, USDM or JDM.

the JDM 2jz makes 280hp and the USDM 2jz makes 320hp

so there.

 

[7MGTEsup]

Engine is the same, except for the EGR.

ECU is where the difference lies.

 

[7MGTEsup]

not even close.

and sometimes just the opposite! the jdm 7m makes the same power, USDM or JDM.

the JDM 2jz makes 280hp and the USDM 2jz makes 320hp

so there.

I think you will find both cars are the same power, in Japan they had a law that no car could produce more than 280 hp. So manufactures always quoted 276 hp just look at all the top powers for jap cars Skylines, supras, GTO's. We tested a few that arrived in stock form in the UK and they all produced more than it said on the tin.

 

[speedfreak426]

what are the differences with the JDM ecu's? I only have the service manual for the usdm engine, and I have a JDM engine trans and ecu.

 

[7MGTEsup]

what are the differences with the JDM ecu's? I only have the service manual for the usdm engine, and I have a JDM engine trans and ecu.

Because of no EGR on the Japanese cars they have different fuel and spark maps. Not sure how different Jet Jock might know.

 

[lagged]

I think you will find both cars are the same power, in Japan they had a law that no car could produce more than 280 hp. So manufactures always quoted 276 hp just look at all the top powers for jap cars Skylines, supras, GTO's. We tested a few that arrived in stock form in the UK and they all produced more than it said on the tin.

probably true. would love to see dyno sheets, im sure they are out there though i personally havent searched for them.

 

[Poodles]

JDM 2J's have different cams and turbos

they made less horsepower, but more torque than the USDM version...