We ended up swapping the intake manifold as well as the throttle body in order to get my original wiring harness to connect to engine. Because the other intake manifold's connecter didnt mate up to my harness and I'm thinking this would save me some time messing with wires... Any thoughts on this???
Help: JDM 7MGE Swap
- Thread starter RallySoob
- Start date
just use a new good gasket and I can't forsee a problem with it.
supramacist: yea no worries, I didn't mean to come off like a knob in the first one, and re-reading it I kinda did, oops *blush*
that heater line is the biggest concern, frankly the coolant hose routing around these motors sucks, but I didn't have time to re-plumb the thing when I did my swap (had to get to work the next day) so basicly, I just recommend that you do your best to make it the same. I do remember having to cut a tube open on the driver side of the motor tho, heater core return line maybe? I honestly can't remember what it was, it's the opposite of the one that is normally plugged on ours, the jap-spec one is backwards, it's got the line going to where ours has the plug, and it's a capped line on the opposite side. complete with about 4' of line running around the motor for that circuit.
supramacist: yea no worries, I didn't mean to come off like a knob in the first one, and re-reading it I kinda did, oops *blush*
that heater line is the biggest concern, frankly the coolant hose routing around these motors sucks, but I didn't have time to re-plumb the thing when I did my swap (had to get to work the next day) so basicly, I just recommend that you do your best to make it the same. I do remember having to cut a tube open on the driver side of the motor tho, heater core return line maybe? I honestly can't remember what it was, it's the opposite of the one that is normally plugged on ours, the jap-spec one is backwards, it's got the line going to where ours has the plug, and it's a capped line on the opposite side. complete with about 4' of line running around the motor for that circuit.
Intake swap? The intake manifolds are the same on JDM and USDM engines. The TB is the only difference! I think you should refer to the second post on the thread, that has EVERY SINGLE DIFFERENCE between JDM and USDM 7m's. I should know seeing as how I've done the swap and made it smog legal.
I foresee (thanks mkiii n00b) that you'll have to piddle about with the ignition timing, and that you'll have atleast 1, if not several vacuum leaks. This will be especially crucial regarding the EGR, if you decide to just disable it (which I did) you'll need to cap a few vacuum lines from the throttle body, remember to do this, elsewise you'll probably loose them in behind the intake and spend all night tracking down the vacuum leak. a spritz bottle of water will help you track down vacuum leaks. You'll need a timing light to do ignition timing, but it'll almost certainly be wrong, if it even fires up at all, it's possible that you've got it lined up on the crank, but not on the cams and that you're 360* of crank revolution out of phase. that's not intended as a knock on ya, it's happened to me lots of times, on lots of motors.
Let us know what symptoms it gives you once you get it running tho, and we'll go from there.
Let us know what symptoms it gives you once you get it running tho, and we'll go from there.
That's all normal shit to look into. I have no doubt that my pain in the backside will not fire when I get it together and even after I get it running....,
I will probably still spend the summer tinkering on it. Are there different types of timing lights??? It seems there are. If there are wich one doe we need for the supra??? Thanks.
I will probably still spend the summer tinkering on it. Are there different types of timing lights??? It seems there are. If there are wich one doe we need for the supra??? Thanks.
1988SupraDreams said:
Not on the N/A. At least not for all the years. They may have unified at some point, but there have been posts showing that the "Y" pipe doesn't have the EGR routing that the USDM "Y" pipe has. I'm not sure about the upper intake, but given that the USDM needs a specific port for the EGR passage that exists on the USDM "Y" pipe I'd have to assume that it's either blocked off by the non-EGR "Y" pipe or that it doesn't have the EGR passages either.
supramacist said:
there are different types yes, analogue vs digital, frankly if you know what you're doing, you can get along with a cheap analogue one, the supra has timing marks on the balancer and on the timing cover, you can just use those. You don't need to manually compensate which the digital ones will let you do, digital ones also have a tachometer, for measuring vacuum advance, which you don't really need to do.
It's pretty much just a matter of features, and if you wanna get heavy into playing with the timing maps, you will need a digital one, or for engines that don't have timing marks, but for what you're doing, a cheap analogue one will work.
*looks twice for spelling errors*
CRE said:
I thought the EGR Routing was on the TB? That's how it was on my USDM GE. And thats how it was on my USDM GTE and JDM GTE. Why would Japan be so retarded to do it differently just for their NA Motors. The TB should have no vaccuum ports on it. That's all IIRC. But I'm probably wrong seeing as how I've never seen a JDM GE.
1988SupraDreams said:
On ALL the USDM intakes the EGR enters the intake system via the "Y" pipe. The majority of vacuum lines source at the throttle body (off the top of my head I recall there being 4). You may be thinking of the ISC feed which comes from the throttle body, but that's the same on JDM N/As too.
It's all good, I didn't know that the EGR routed all the way up through the "Y" pipe until a few months ago myself. I like the JDM "Y" pipe... it looks sooooo much cleaner with out the access panel for the EGR piping on top.
Yeah, it's the one that connects to the surge tank on the upper intake plenum. It's commonly referred to as the "Y" pipe bacause it branches off before entering the upper intake mani.
On USDM models it's got a plate on top with four bolts holding it down, that's an access to the EGR's piping in that particular pipe. The JDM N/A's "Y" pipe doesn't have that plate as there's no routing through it for anything other than incoming air.
On USDM models it's got a plate on top with four bolts holding it down, that's an access to the EGR's piping in that particular pipe. The JDM N/A's "Y" pipe doesn't have that plate as there's no routing through it for anything other than incoming air.
So far so good; although not coming together as fast as planned because we've had to stop the show several times to wait for parts. But it is coming together.
-put in new timing belt, clutch, and turned my 5speed flywheel, torqued the headbolts too. my original motor mounts seem to bolt up to this block fine so I think I'm good there.
The motor is indeed out of a Cressida and it was false advertised on ebay by a fairly reputable engine supplier. It was also supposed to come with all the external pieces like power steering pump, alternator, a/c compressor, etc. I really wanted the A/C since mine is currently broke... But After taking the motor apart, it looks like new on the inside with only a light oil stain. Definately a low mileage motor, amen to that... I would like to take action but I'm sure it would prove to be more of a headache than effective.
Sorry for the delay on pics, have'nt taken my camera out there yet; will do tonite.
-also got a fuel pressure regulator, header, muffler, and hotter plug wires to hook up...
-put in new timing belt, clutch, and turned my 5speed flywheel, torqued the headbolts too. my original motor mounts seem to bolt up to this block fine so I think I'm good there.
The motor is indeed out of a Cressida and it was false advertised on ebay by a fairly reputable engine supplier. It was also supposed to come with all the external pieces like power steering pump, alternator, a/c compressor, etc. I really wanted the A/C since mine is currently broke... But After taking the motor apart, it looks like new on the inside with only a light oil stain. Definately a low mileage motor, amen to that... I would like to take action but I'm sure it would prove to be more of a headache than effective.
Sorry for the delay on pics, have'nt taken my camera out there yet; will do tonite.
-also got a fuel pressure regulator, header, muffler, and hotter plug wires to hook up...
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I met a cat that has an 86.5. he bought an engine off ebay that was falsley advertised. It's a 7mgte engine and it blows oil...., BADLY.