intake manifold

[Alan]

Say is there any difference between a ATX and a MTX maniford on the Gen II sho's? Especially the throttle body.

thanks
alan

 

[sdpatt]

The biggest difference between them is the tapped ****** on the driver side of the rear plenum for the exhaust gas recirculation flow path and a tapped mounting ****** on the back of the rear plenum for the EGR pressure sensor that is on the 3.2L and California market 3.0L engines, but not on the 49 state 3.0L engines. There was a slight differnce in the throttle body that did not change its function - the use of a coating on the inside to prevent the buildup of deposits. This was a running production change and only discouraged owners from properly cleaning their throttle body bores. There has been some discussion of this topic previously, you may want to search on the subject.

 

[KeystonePowderCoating]

i'm bringing this thread back from the dead because I need to know the dimensions to fab-up a block off plate so a atx intake will work on a 49 state 3.0 engine.

I need a very quick reply and possibly a picture of a 3.2 rear plenum.

I always thought there was just 1 location on the rear plenum / drivers side.

It is somewhat oval in design and is noticeable even on the 3.0 49 state intakes, however these intakes are not drilled / tapped. I have a few spare 3.0 49 state intakes that I can use to trace the oval design, but how about the location of the holes. How far apart are they, etc..

Please reply as soon as possible.

Thanks.

-Scott-

 

[TYSHO]

i'm bringing this thread back from the dead because I need to know the dimensions to fab-up a block off plate so a atx intake will work on a 49 state 3.0 engine.

I need a very quick reply and possibly a picture of a 3.2 rear plenum.

I always thought there was just 1 location on the rear plenum / drivers side.

It is somewhat oval in design and is noticeable even on the 3.0 49 state intakes, however these intakes are not drilled / tapped. I have a few spare 3.0 49 state intakes that I can use to trace the oval design, but how about the location of the holes. How far apart are they, etc..

Please reply as soon as possible.

Thanks.

-Scott-

Go buy a cheap EGR gasket from the auto store, should'nt be over $2. You can use that for the blocking plate you're going to make. Also, I would see if you know a parts guy up there that would be willing to pull out a Mustang gasket and the SHO one, then compare the two. If they're the same, you can buy a Mustang one for cheap. I've seen them on Mustang forums and eBay. It would be a lot more better to just pay $10 for one if it does work, and they are aluminum, too, if I recall.

 

[NoSlo]

The bolt holes are 43mm center to center. The edge of the holes are 4mm from the bottom and 8mm from the top, measured along the axis of the holes. The bolt holes are 9mm in diameter, drilling 10mm diameter holes in the block-off plate will allow for a bit of tolerance.

 

[KeystonePowderCoating]

Thank you kindly to the both of you for the quick replies.

If you read in the second post by sdpatt he said:

The biggest difference between them is the tapped ****** on the driver side of the rear plenum for the exhaust gas recirculation flow path AND a tapped mounting ****** on the back of the rear plenum for the EGR pressure sensor that is on the 3.2L and California market 3.0L engines, but not on the 49 state 3.0L engines.

From the way I read this, to me it sounds like he is stating that there are 2 EGR ports that need blocked off on the rear plenum of the 3.2 ATX intake manifold.

I always thought there was just the 1 (the oval looking tab sticking out the back with a port hole in the center and 2 threaded bolt holes on the left & right), which as TYSHO & NoSlo stated, you can pick up a EGR gasket for the template or use the specified dimensions respectively to build the block off plate.

Ultimately what I'm asking is, if I build a simple block off plate for the 3.2 intake, can it be used on a MTX without any additional work. Not including the throttle body or anything else. I'm speaking about just the intake plenums, the butterflys, and the runners.

 

[NoSlo]

The DPFE mounting location on the intake is just a mounting location - no ports are there.

The crossover tube has the DIS located a little bit differently also, I believe.

 

[TYSHO]

The DPFE mounting location on the intake is just a mounting location - no ports are there.

The crossover tube has the DIS located a little bit differently also, I believe.

On the mounting location, there is a little vacuum port for the red or green [can't recall] EGR hose to hook up to, you will need to cap this off. One goes there and the other to the EGR valve.

Correct, the DIS location is moved more back to the firewall.

In the end, it can all bolt up and be plugged off, but I'm not sure about the EGR nostrils inside the intake and which IAC valve to use, and if it's all effected by the EGR stuff inside there or not.

 

[KeystonePowderCoating]

So do you think I can get away with quickly fab'ing up a simple block off plate and using a rubber cap to plug off the vacuum port tube and call it quits?


I in a bind and I don't have time for the R & D on this. I sold this intake to a guy who is using it on an MTX. Before the sale, he didn't ask me if it will work on an MTX and I didn't think of asking him if it was going on an ATX or MTX. Neither of us is really at fault but because I was the one selling it, I'd like to smooth over the deal.


I kinda need a definite answer if this will work, so that if it works, I can make the block off plate and send it to him so he can get the car on the road.

I greatly appreciate the input so far.

Thanks!!

 

[KeystonePowderCoating]

bump.

 

[KeystonePowderCoating]

bump again,

I kindly ask if anyone knows if this will work, please post.

Thanks so much!

 

[luigisho]

I've seen a plate welded over the hole to make this work. Is the intake aluminum? That might be a little trickier welding than regular steel.

 

[CerberuS]

Depends on the quality you want it done.

the cheap way = small steel (or whatever) glued with good hi temp silicone.

of course its "the" cheapest way

 

[ManySHOs]

I've seen a plate welded over the hole to make this work. Is the intake aluminum? That might be a little trickier welding than regular steel.

Yes its aluminum but a decent welder won't have a difficult time with the SHO intake. Mine has been welded in a few different areas. The EGR tunnel is very thick which makes it much easier to weld shut. (I ground mine completely off my 3.0 manifold-what a PITA but it looks good)

To answer the original question, yes, I believe you would be ok if you just capped off the end but I don't have one in front of me to determine for sure. Alternatively, you could also disassemble it and swap the rear surge tank and cross over tube with mtx pieces if you have it lying around (but you probably thought of that already).

Ian

 

[thecrew2999]

i think the DIS location is different. i noticed on my 93' 3.2 atx intake the DIS is straight and on my 92' 3.0 DIS is little bent. dont know why but it is. not difference i believe beyond that and egr