For all the JDM 7MGTE owners...

[Jspec7m88]

i have noticed that a lot of ppl on here experience fuel cut...some around 4500, some around 6...it has varied, but i've wondered exactly how many JDM 7M's ARE out there...i've hit a high of 16psi from launch to about 110 and from the way i've heard people describe fuel cut, its like an "invisible wall"...which i've def. never experienced that...so i guess if any of you have it fuel cut, what psi? hell, even for the USDM 7Ms, reply back. this is just a topic i'm not too familiar with and just want to become more EDUMACATED!:icon_mull

[sleepersupra]

i hit f/c at 12psi with 3" pipe from turbo back, fidanza flywheel, and intake. i fixed it since then

[MDCmotorsports]

If you're not hitting f/c at 16psi...

A.)You're boost gauge is off
B.)You have a Fuel Cut Defenser hidden some where
C.)You magically have a group A MAF system
D.)Standalone system
E.) A BOOOOOOSSSSSSSSTTTTTTTT LEAK

[Jspec7m88]

A.)You're boost gauge is off
B.)You have a Fuel Cut Defenser hidden some where
C.)You magically have a group A MAF system
D.)Standalone system
E.) A BOOOOOOSSSSSSSSTTTTTTTT LEAK

well....boost gauge has seemed to work fine...meaning spool time and all...a Fuel Cut Defenser...possibly. well when Floyd looked at my car the first night he saw it, he said that one of the fine little "gadgets" running along the engine bay was something that removed the restriction of boost...i honestly cant remember word for word, but he said that it allowed more boost...hmm.
what do you mean by a:"A MAF system". and then standalone...pretty sure i dont have that:( ...and for boost leaks, i took care of that problem when i first got the car. Unfortunately, for rod knock, its been a LOOONNG time since i've went past 3rpms because its my DD and well...i want it to last as long as possible before getting it fixed...last time i boosted, it was only to like 11psi(still had some throttle left). I dunno. it's not the biggest of my worries right now...just somethin that pondered my mind.

[7M-GTE]

wouldn't the jdm fuel cut be the same as the usdm fuel cut when both motors are stock?

[Jspec7m88]

well i dont know how much of a difference it makes internally...but i believe the UDSM is 220 or somewhere around there...and the JDM is what, 247? somethin like that...i know there is a hp difference...and i was curious as to WHERE that hp difference came from...and i didn't know if it had anything to do w/ fuel system..which is why i've made this post!:)

[7M-GTE]

well i dont know how much of a difference it makes internally...but i believe the UDSM is 220 or somewhere around there...and the JDM is what, 247? somethin like that...i know there is a hp difference...and i was curious as to WHERE that hp difference came from...and i didn't know if it had anything to do w/ fuel system..which is why i've made this post!:)

where does it say that they have hp differences... I've never heard that... I was under the impression that there was no difference between the jdm motors and the usdm motors other than the egr systems...

[Jetfixr757]

If you remove a worn out, BGH, rod knocking USDM engine from your car, and install a JDM 7mgte, SAME ELECTRONICS, unless you did something else to the engine, or left something off to provide a fault in the induction system, you will have the same result you begin with. Now if you use a JDM ECU, or other non USDM/non stock electronics on your car yes you will have something different, but if all you change is the longblock, you are having halucinations. the JDM engines are a little different, no EGR, they come with block off plates, other than the 4 above mentioned items, previous post, the result will be the same as before unless you had a really worn out engine, turbo or both.
William 89T

[Jspec7m88]

sorry...i was assuming all the electronics being swapped out w/ jdm parts as well.

[7M-GTE]

If you remove a worn out, BGH, rod knocking USDM engine from your car, and install a JDM 7mgte, SAME ELECTRONICS, unless you did something else to the engine, or left something off to provide a fault in the induction system, you will have the same result you begin with. Now if you use a JDM ECU, or other non USDM/non stock electronics on your car yes you will have something different, but if all you change is the longblock, you are having halucinations. the JDM engines are a little different, no EGR, they come with block off plates, other than the 4 above mentioned items, previous post, the result will be the same as before unless you had a really worn out engine, turbo or both.
William 89T

thats what I thought... but I didn't know that the jdm ecu's were any different either... I thought that they were the same unless you got a turbo A...

[shaeff]

heh, JDM 7M's are identical in horsepower and torque to the USDM models, regardless of whether or not you use the stock ECU to your car, or the JDM ecu. it's all the same. anything else you've heard is just plain wrong, or from someone who's obsessed with JdM tYtEneSs, yo.

your JDM motor is identical to every other USDM motor, save for the EGR setup. there is no hidden horsepower in the JDM's. and you wont gain any power by adding a stock JDM ECU, either. those are myths.

-shaeff

[Jspec7m88]

well then i guess that answers all my questions!!!...so would it be this way w/ all USDM>JDM cars? I didn't think it was...but i was wrong w/ MKIII's anyways....

[7M-GTE]

heh, JDM 7M's are identical in horsepower and torque to the USDM models, regardless of whether or not you use the stock ECU to your car, or the JDM ecu. it's all the same. anything else you've heard is just plain wrong, or from someone who's obsessed with JdM tYtEneSs, yo.

your JDM motor is identical to every other USDM motor, save for the EGR setup. there is no hidden horsepower in the JDM's. and you wont gain any power by adding a stock JDM ECU, either. those are myths.

-shaeff

thanks shaeff... thats what I understood also...

[mkiiSupraMan18]

Oh, and last time I seen your car you had a HUGE boost leak...

[Jspec7m88]

when you saw it, i had only had the car for well...not that long lol

[Jspec7m88]

sort of off-subject...but what are the exact numbers on a stock 7M-GTE to the wheels AND to the crank?

[supra90turbo]

Hit the dyno and you tell us.

[Justin727]

the JDM 7mgte might not have oil squirters

[supra90turbo]

Nope, Justin. They do.
(mine does, anyway)

[Jeff Lange]

Nope, Justin. They do.
(mine does, anyway)

1986 7M-GTE's don't. After that they do.

Stock 7M-GTE will put down about 200rwhp, and is rated at 230hp at the flywheel (232hp for 89+).

[Bullz_EyE]

So are JDM motors a direct swap? I would like to possibly invest in one in the future, as they seem to be cheaper with less miles than ones offered here.

[mkiiSupraMan18]

Yes... direct swap. Unless you need emissions, you may also need to change stupid things like alt brackets, Motor mounts, and some other various items. I'd swap EVERYTHING off of the block (except the major stuff like the intake and what not) like the accessories just because it's a hell of a lot easier to change them out of the car than it is to change them in the car.

[shaeff]

the whole JDM motor craze is just that, though, a CRAZE. they're no better than the USDM models. you can usually find them with less mileage, that's all. you'd really be better off taking that $1000 and dumping it into your current GTE because at least then you know what you're working with.

the ONLY reason i got a JDM GTE is because i was formerly N/A, and i couldnt find a USDM GTE for the life of me.

and just for the record, the ONLY things i changed on my JDM motor when i put it in were: the steel fitting for the brake booster on the intake manifold (the jdm one faces the wrong way) and the motormounts because they were 89+ and my car's an 86.5 :)

everything else is JDM, yo~!

-shaeff

[encomiast]

Stock 7M-GTE will put down about 200rwhp, and is rated at 230hp at the flywheel (232hp for 89+).
Ha! Over here, the 7MGTE is rated at 234.68 hp (175kW) and 238.7hp (178kW), respectively. GDM tyte yo!
Now who wants a GDM stock ECU for $500 shipped? Just drop me a PM :biglaugh:

[supra90turbo]

encomiast: Check your PMs!!!!!!!

[Jspec7m88]

Stock 7M-GTE will put down about 200rwhp, and is rated at 230hp at the flywheel (232hp for 89+).
__________________

well the only reason that i wondered this was because there is a guy with a hatchback w/ a bunch of money dumped into it and ran the best of like a 16.2 (poop on it)...and he's one of those type of guys to just constantly run his mouth. Well, HE, said that if the STOCK 7mGTE is 23_ hp to the crank, he said that a rear wheel drive (like my so called, piece of shit supra) will only put down 165-170 to the wheels. That was the only reason why I wanted to know for sure. Thanks though. and supra90turbo, you told me to take it to a dyno...well I asked for the STOCK numbers. Thanks anways.

[Nick M]

For those that really want what you see as a true jdm, you will need to swap to a 1JZ.

[vas85]

I've got a JDM 88 GT Limited but it's got Fuel Cut Defender on it, so I've never hit it either way, and never run anywhere near 14psi / 1bar either. Never knew ECU was different with the JDM MKIII (now I know it isn't, which is what I thought lol), mine's full import digital dash leather everything pretty much as JDM as they come lol.

[Mr.PFloyd]

ive got what apears to be a JDM motor for my spare one. Came out of a healthy 88 (assumign it was swappedin or soemthing) which i hope has oil squirters. The whole motor is weird because its got a JDM TB and blockoff plates for the egr, and my brake booster faces the right way hmm..

[Kai]

Erm - the emissions are different on JDM cars - like all european models, no N/A's came with Catalytic converters until the facelifts in '89, dunno if it was the same for Turbo's - here, we didnt get cats on turbos either, again, not until facelift. Although its still legal to remove them even if you have one.

[Supra Dheez Nawtz]

The dif between the usdm and the jdm are as follows and are also pretty much covered in previous. The jdm doesnt have egr so its rated at 240hp at the crank and 257 ftlbs of tq the usdm is 232. Also some jdm engines have oil squirters and some dont ive seen both being i owned a shop for awhile and did alot of rod knock revivals. If u want more hp in your jdm 7m put u some jdm tyte v-tec cams in it'll be hella fast Yo! :D

[johnathan1]

Stock USDM 7M-GTE...

http://img.photobucket.com/albums/v286/johnathan1/tiffdynosheet.jpg

[Boost Lee]

Hello?

[Nick M]

Stock 7M-GTE will put down about 200rwhp, and is rated at 230hp at the flywheel (232hp for 89+).


Give or take a dozen or so. And that is a good point anyway. RWHP is what you really have. Not what you read in a magazine printed 18 years ago.

The markets that come with out EGR, have different programming than the US model. It is in the tune. And it does not increase the power. The US market has a different tuning strategy so power is not lost when EGR is applied.

[ians13]

my jdm 7m feels so much quicker but that's most likely because my old 7m had over 170k but in any case the car pulls much harder with the same mods also my jbm motor came from a 1990 model at lest that's what i was told, that being said i got a set of 89+ motor for sale PM me :)

[89jdm7m]

Yes... direct swap. Unless you need emissions, you may also need to change stupid things like alt brackets, Motor mounts, and some other various items. I'd swap EVERYTHING off of the block (except the major stuff like the intake and what not) like the accessories just because it's a hell of a lot easier to change them out of the car than it is to change them in the car.
oil presure sending unit and throttle body are different as well... routing of coolant lines to the heater core is different, and a few misc. sensors

pretty much though... it is a direct swap

[Disced]

For the fuel cut question... I have 550/lex and reach fuel cut @ approx. 22 lbs. of boost on the stock CT...

[nosechunks]

If you're not hitting f/c at 16psi...

A.)You're boost gauge is off
B.)You have a Fuel Cut Defenser hidden some where
C.)You magically have a group A MAF system
D.)Standalone system
E.) A BOOOOOOSSSSSSSSTTTTTTTT LEAK


boost leaks lower fuel cut, not raise it. hehehe:biglaugh: