JDM throttle body?

[deabionni]

I'm converting my GE/auto to a GTE/auto, but the throttle body that's on the GTE is for a stick.

The GTE engine that I'm putting in, has the EGR blocked off. My understanding is that a JDM throttle body is missing a connector required for the EGR, so it doesn't work for a USDM GTE with emissions. Since my EGR is blocked off, can I get away with using a JDM throttle body without any problems?

Thanks in advance.

 

[bountykilla0118]

A 7mgte throttle body is a 7mgte throttle body ....... Of course you can use it why wouldn't you be able too? I ran a JDM throttle body until I decided to use my USDM manifold I just swap them since the motor was out.

 

[tbcmorris]

Sounds to me like what your saying makes plenty of sense. A gte throttle body should work on a gte motor and you get the added bonus of the lack of the egr.

 

[deabionni]

...I ran a JDM throttle body until I decided to use my USDM manifold...

That's my biggest question. I'm using a USDM manifold with the EGR blocked off, and just need to make sure that the JDM TB would be compatible.

I'm under the impression that the JDM TB is missing something that the USDM TB would have, but I want to make sure that I wouldn't miss something since my EGR is blocked off.

 

[jdub]

What you're referring to is the vac source for the EGR VSV on top of the TB...USDM has 2 there, JDM has 1 (for the BOV). The EGR port is forward of the TB plate and is in that location so vac cannot be supplied to the EGR VSV/Valve Modulator at idle. If you have removed the EGR, the one for the BOV is all you need.

The linkage is different on a JDM TB due to it being Rt Hand drive.

 

[bountykilla0118]

yea i forgot that ..... i fabbed mine to work with both

 

[bountykilla0118]

Sounds to me like what your saying makes plenty of sense. A gte throttle body should work on a gte motor and you get the added bonus of the lack of the egr.

Umm actually there is no bonus ..... if anything removing the EGR is a bad thing. The EGR cools off the number 6 cylinder a good bit. Search and you find that the USDM ecu is expecting the EGR to be in place IIRC. I want to say it makes the cylinder almost 100 degree's cooler with it in place.....

Thats why i put my EGR back on plus I pass emissions with flying colors

With the EGR in place my test readings were:
................Readings ......Allowable
HC-ppm ....119............140 PASS
Co-%........00.44..........89 PASS
NOx ppm....576............984 PASS

Without the EGR:
................Readings ......Allowable
HC-ppm ....175............140FAIL
Co-%........00.71..........89 PASS
NOx ppm....2554............984 FAIL

 

[jdub]

Actually the EGR cooler has little (if any) effect on the #6 cylinder cooling wise. If you look at a head, there's that big coolant fitting aft of #6...there's coolant behind the EGR cooler.

If you want to remove the EGR, the correct way is to remove the cooler and block the gas port on the exhaust side. You want to use a JDM ECU as well.

I do think removing the EGR is a bad idea using a USDM ECU...it's fuel map does expect it to be there. The EGR also has the effect of reducing the chance of detonation. I had my EGR off for a while and had to re-install it to pass emissions. I had 50-100 deg C drops in EGT (depending on throttle) when I put the EGR back on.

 

[bountykilla0118]

I was close ....... 20w50 FTW lol well i m back down to 10w40 b/c of you

 

[jdub]

I though that might be what you were thinking about concerning the EGR

One other thing about the EGR is it doesn't function/have any impact at idle or WOT. You can still detonate at less than WOT (engine under load) though.

LOL...good to hear you dumped the 20W-50. You should give Castrol European Formula 0W-30 (German Castrol) a try...it's close to a 40W viscosity wise at ops temp. Flows very well cold too

 

[deabionni]

The GTE engine I just bought came with the EGR blocked off. I still have my complete N/A motor that has all of the EGR system in place.

It sounds like I'd be better off taking the EGR system off from my GE, and putting it on the GTE before installing it in the car. (And yes, I'd be running the USDM ECM as well). I'm just guessing that the EGR would be the same between the two engines, but can anyone confirm this for me?

 

[jdub]

The EGR cooler, Valve, and Vac Modulator are the same. I'm pretty sure the VSV is different though. The vac routing is different too...here's the TSRM lnk:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=EC&P=16

The Turbo manifold has a Vac "tree" mounted on the lower part of the upper plenum...you'll need that if the motor didn't come with one.

 

[deabionni]

Hmm.... I didn't even think abut the VSV being different. I'm not sure if it has a Vac tree on it or not. I'll have to look when I get home. Actually, if it will help, I could take pics of this GTE and post them; so you guys could point out to me what all has been removed from this engine.

 

[Tanya]

Um, I would think that the JDM TB's linkage will need to be swaped out with a USDM one, it is linkaged for a RHD car. At least, looking at the 6M throttle bodies here, don't think it can be used on a USDM car without the linkages being swapped...

 

[gtsfirefighter]

The EGR cooler, Valve, and Vac Modulator are the same. I'm pretty sure the VSV is different though. The vac routing is different too...here's the TSRM lnk:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=EC&P=16

The Turbo manifold has a Vac "tree" mounted on the lower part of the upper plenum...you'll need that if the motor didn't come with one.

Mike, to save you some more confusion, GE and GTE vacuum modulators are different. GE has 3 vac nipple while the GTE only has 2. (not including the bottom one that goes to the egr valve) So you can't use the one off of your GE.
You should be able to find all the vacuum line assembly easy. In fact I may have some laying around here that came in a box of parts when I bought the blue car. I'll look and PM you. It's actually pretty easy to put together.

 

[jdub]

^^^ You're right! Looked at the diagrams a bit closer and the GE modulator does have an extra nipple.

 

[deabionni]

Ok, here's what I got on the GTE I bought. To me, it looks like I have what I need to connect the auto tranny cable to the TB, except for the bracket. Am I right, or am I seeing things?

Top view of the engine.

Passenger side. Now this is there I believe the throttle cable hooks up.

Throttle body. This is where the cable from the tranny hooks up, right? If so, then all I need is the bracket.

Also, here's everything that was blocked off when they removed the EGR.

 

[deabionni]

I'm going to shift gears here, and hijak my own thread for a minute.

[hijak]

On the other side of the engine, I notice he also modified the coolant tubes that run under the exhaust manifold.

First off, there's a heater hose capped off, which I can reuse from my GE engine, but there's no tube to run the coolant to the driver's side of the engine.

Here's how he has it capped off at the front of the engine.

Now, my question is, I'm afraid of reusing the tubes from my old GE; as they seem to be on the VERY rusty side.

Since I only need the bottom tube, is there any cheap replacement that I can use for a fix? I don't really have the $$$ to order new tubes from Toyota, and I only need the bottom tube at that. The top tube still on the GTE looks like it's still in great shape.

[/hijak]

 

[MK3Brent]

What you're referring to is the vac source for the EGR VSV on top of the TB...USDM has 2 there, JDM has 1 (for the BOV). T If you have removed the EGR, the one for the BOV is all you need.

JDM 7M-GTE's use that port for the bypass valve?

Really?

 

[jdub]

Here's a couple of pics of my auto tranny linkage...the 1st one is a bit blurry, but you get the idea.






Concerning that hardline around around the block...put a WTB thread in the classified section or PM tubbie...he might have one.

Where did you get that motor and how do you know it's JDM?
Just so you know, it's a crap shoot installing a used engine...especially one you don't know the history on.