2.5 to 2.3 not.

 

Unknown what that's meant for.

Only ones I remember hearing about are for 2.3 manifold to 2.5 head.

 

I have a 2.5 motor, head, and intake. Im putting in my duratec mk1, 2.5 motors come with a electronic throttle body which I can't use in a mk1. So the e bay sells a billet adapter that bolts to a 2.5 intake manifold and the other side is set up to bolt on a 2.0 2.3 t body.

 

Wow, where'd they come up w/ those spec's? Looks like thats going back.

 

So I bought an Evil bay adapter for 135 dollars, waited 7 weeks for it to arrive. So when it finally sans instructions I bolted it up to a factory Ford 2.5 intake manifold. Then I went to bolt on a factory 2.3 throttle body and no dice. The adapter plate misses the bottom left bolt of the t body and there is a huge gap where the t body feeds the iacv. So what's the deal anyone else dealt with this?

It should work. Have you tried flipping the adapter plate, may be backwards. I ended up using the 2.3 manifold with just the adapter plate for the manifold/head portion. On the ebay listing it shows a 2.5 manifld with a drive by wire throttle body. Contact the seller and see what’s up.

 

I flipped it four different ways, and had a buddy check it out as well. Yes I contacted the seller waiting to hear back.

 

probably the bolt pattern for the drive by wire TB

 

Why would you adapt out one drive by wire t-body and turn around put another one in its places. My thought is maybe he based it off of a Mazda t-body

The seller got back to me, and of course I'm the first person to experience this problem. So lucky ass me. Waiting to hear back, there is no mention of models on the E-bay ad just that it fits Fords and Mazdas

 

You'd think he'd advertise what it fits so & so motors w/ this combo & why ppl would want to buy it. I'd also think he'd test fit them all whether on a actual intake w/ t/b or a mock up jig. I could go on about a couple cases of product years ago, that got scrapped thanx to a machine operator that didn't check tolerances w/ a simple go/no go gauge that I fabbed up for him. I mentioned to all of them to check each one or every 5th /10th or whatever & if the machine (Monarch dual turret tape lathes) started sliding off spec. 90% of it was they hustled the product into the pneumatic jaw & didn't get it in all the way. So I'd be kinda pissed off w/ this. Hopefully you get it squared away. Could possibly take your t/b & intake to a machine shop to fab up a adapter for you.

 

I have one I can send you

Tom

 

Thanks Tom.
I got in touch with seller, and sent him a stock Ford dtec t-body. He is going to pass it along to the machinist, hoping to have something after the new year

 

Tom do you still have that adapter and will it allow me to fit a cable throttle onto the 2.5 manifold? Because I need something like that.

 

Yes I do , need to see pictures of your manifold and I will look at the adapters to make sure

Tom

 

What kind of pictures do you need? of the bolt holes or just the manifold itself or?

 

Also tom what's your opinion on the 2.3 manifold on the 2.5 head with an adapter plate vs a 2.5 manifold and 2.5 head with a TB adapter?

 

The 2.5 mani with TB adapter. You want to use a manifold that is designed for what head you are using. The runners and port match of the 2.5 head would work better than the smaller 2.3 manifold.

 

The ebay seller is meeting with the machinist this Wednesday, I will keep you posted on what I hear.

 

Just let me know if you need one

Tom

 

Someone copy these images and host them somewhere that doesn't time links out like Facebook does. This is such an easy job. Nothing against Tom as I think it is great how he continues to support the Focus community, but this is well within the reach of most DIY wrenchers. I am adapting a Zetec TB to my manifold but the process is the same regardless of unit. You may have to clock things differently, just look things over and make sure your clearances are OK before cutting or drilling.

Template for the throttle body adapter is made using plain paper. Just held it against the manifold's throttle body mount and pressed hard with my thumb.

A little bit of geometry to determine where the center of the bore is. Draw a secant line, find the center point. Draw a line perpendicular to the secant, crossing through the center. Repeat. The intersection of those two lines drawn from the two secants is the center point. Measure twice, drill once.

This is the Zetec throttle body gasket. From the factory, there is no gasket but I will be using my aftermarket 65mm which does use one. Here I am just making sure the rough size will work.

Basic size needed. The material is 1/2" thick ABS plastic.
https://smile.amazon.com/gp/product/B018RSVWC6/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
No need for 12"x12". I ordered extra in case the first try didn't go right.

Rough cut with the saw. Going slow is key or the plastic melts. You can see some melted plastic on the blade.

All the holes center punched.

Drill the main bore using a 2.5" hole saw. That is 64mm, which give me 1mm of blending to make sure everything lines up right from my 65mm throttle body.

Hole drilled. Once again I had to go slow to avoid melting.

Mounting holes drilled. 1/4" bit and #12 countersink bit.

Holes deburred and checking to ensure that the countersunk M6 screws sit flush or a little below.
Screws used - https://smile.amazon.com/gp/product/B0062R3FFW/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1

Rough plate mounted.

Working through orientation of the throttle body using the gasket. NOTE THIS IS WHERE YOU MAY HAVE TO ALTER THE ORIENTATION IF YOU ARE USING A DURATEC THROTTLE BODY.

Making sure the throttle body fits too. The TPS caused an issue that required some extra trimming.

Mounting holes for the throttle body added. Top left I was experimenting to see if I could use a threaded insert. Nope.

Plate resized to approximately what is needed.

Thin smear of RTV over each screw head, flattened with a razor blade. I shouldn't need this as there is plenty of room from the screws to bore edge for sealing, but better safe than sorry.

Zetec cable throttle mounted to 25.L Duratec drive-by-wire manifold.

Here you cann see the the through bolts I used and the extra trimming that was done in order to accommodate the TPS and connector.

Everything lined up nicely. The manifold is actually the smallest part. If I ever get the urge, I blend the whole thing perfectly smooth.

There you go. Took me a couple of hours including the time to figure it all out. Since I have done the figuring for you now, even if you don't have much fabrication experience, this should not take you more than an afternoon in the garage.

 

Zetec TB?

What's the purpose of using a zetec throttle? also is that from a stock zetec or the SVT?

 

What's the purpose of using a zetec throttle? also is that from a stock zetec or the SVT?

That is an aftermarket 65mm early Zetec throttle body. The purpose is that I own one and the car is a 2001 and still thinks it is a Zetec. (shhh, don't tell that it is a Duratec now)

An even more important question, how are you going to mount the throttle cable bracket to the manifold? Just fab something up as well?

The cable bracket mounts directly to the throttle body on this particular unit. It is nicely self-contained. It require no auxiliary brackets, just a non-stock routing of the cable.

 

An even more important question, how are you going to mount the throttle cable bracket to the manifold? Just fab something up as well?

 

How about the IAC?

 

Yeah I didn't post the pictures here purely because I didn't know how to get them hosted. You used Facebook?

 

Yeah. I have an album of all the pics. Unfortunately, Facebook changes URLs over time. So the images above will expire at some point.

 

Here's the pics. You're right it's better here. My Bad.

 

On your pictures, cut our the 2.3 template and the 2.5 template then overlay them. See how close they are.

Also, please tape over the throttle body inlet then clean off all that sand! You don't want that getting into the engine.

 

I haven't ran the iacv for over a year, just crank the idle screw down to about 1100 and called it good. It really doesn't like idling any lower than that due to the cams

 

What cams do you have that cause a 2.5 to need such a high idle? Mine is a track car so I can deal with a high idle, so thanks for the info. Just curious.

 

In need of adapter

Is this picture good?

 

Is this picture good?

So are you just going to not run the iacv with that setup? Also you will need to plug in you hose for the evap purge valve. You might be able to make the one on the 2.5 intake work, you would have to extend the wiring from the firewall down to the intake.

 

So the e bay hits just keep coming. Bought the 2.5 head to 2.3 intake adapter. The machinist didn't do the last pass on one of the intake ports.