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2.3 to 2.5 engine swap - intake adapter plate


2008Milan
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Ok guys I just bought a 2008 Milan for cheap with dead 2.3. It ate the oil and they drove it with no/low oil and killed all the bearings in the engine. I wanted the newest cheapest car I could find and the replacement engine had to be cheap also. I did all the research and found out the 2.3 has a bit of problems and the used engines are priced high and they all have 100 plus K on them. The 2010 to 2012 2.5's have a better rep and you can score low mileage ones cheap.

The problem with the 2.5 is it has taller intake ports and matching intake that does not have the charge plates and other sensors on it like the older models like mine have. So like mentioned here you can't use the 10-12 intake. The older intake leaves a gap at top that needs to be sealed. So this is where I machined up the intake adapter plate and gasket. The 2.5 dropped right in with some changes that I will note.

So after a lot of measuring and drawing up blue prints I made my prototype one. Then with this one I can make changes and then make those changes to final adapter. Here is the adapter with Mr Gasket Intake gasket material, gasket that was made at same time.

photo_326_zpseb201b86.jpg

Here is the adapter on the intake.

photo_135_zps7e09cef4.jpg

Here is the adapter on the head.

photo_236_zpse2e45dee.jpg

 

Car started and ran mint right off the bat. Was wondering if I should make more of these if people want newer engines in fusions if their 2.3 dies?

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Have you considered printing this from a high temp ABS plastic? The intake itself is composite and with an o-ring groove to match the 2.5 intake on the engine side this could be cheap and easy to reproduce, then all you'd need would be some OE 2.5L o-rings, and the 2.3L would seal to it using it's own OE o-rings.

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Went alum and I don't have any things to ever worry about. I don't have CNC right now so can't do the inset weird "o" ring shape. Box of intake O'rings cost more then sheet of intake gasket. Plus I don't know about this "printing" thing. There is more then one way to skin a cat. I had to do this with what I had on hand and with machines I have, in a fast time frame. I was thinking all different ways to do this.

Edited by 2008Milan
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Ok guys I just bought a 2008 Milan for cheap with dead 2.3. It ate the oil and they drove it with no/low oil and killed all the bearings in the engine. I wanted the newest cheapest car I could find and the replacement engine had to be cheap also. I did all the research and found out the 2.3 has a bit of problems and the used engines are priced high and they all have 100 plus K on them. The 2010 to 2012 2.5's have a better rep and you can score low mileage ones cheap.

The problem with the 2.5 is it has taller intake ports and matching intake that does not have the charge plates and other sensors on it like the older models like mine have. So like mentioned here you can't use the 10-12 intake. The older intake leaves a gap at top that needs to be sealed. So this is where I machined up the intake adapter plate and gasket. The 2.5 dropped right in with some changes that I will note.

So after a lot of measuring and drawing up blue prints I made my prototype one. Then with this one I can make changes and then make those changes to final adapter. Here is the adapter with Mr Gasket Intake gasket material, gasket that was made at same time.

photo_326_zpseb201b86.jpg

Here is the adapter on the intake.

photo_135_zps7e09cef4.jpg

Here is the adapter on the head.

photo_236_zpse2e45dee.jpg

 

Car started and ran mint right off the bat. Was wondering if I should make more of these if people want newer engines in fusions if their 2.3 dies?

...............................................

 

 

 

 

Hi 2008Milan,

 

I'm new here-first post.

 

I don't have a Fusion,but do have a 2004 Ford Focus with a blown 2.3, and have been researching 2.5 swaps.

 

My wife's 2012 Mazda6 has the 2.5 and I do like the engine.

 

I'm contemplating ordering these adaptor plates/gaskets you have- to run my stock 2.3 inlet manifold(which has the tumble flaps and imrc)for my smog test on a 2.5 engine that I'll swap in.

 

Or...I may just go with a mild ecu tune(that turns off the tumble flaps/imrc-so no cel)and run the 2.5 donor inlet manifold with a throttle body adaptor for my cable throttle body.

 

I'll most likely be sourcing a escape or fusion engine that has neither of the t/f or imrc contraptions in the intake.

 

I'd prefer to keep it simple and the less gizmos to malfunction the better as far as I'm concerned.

 

 

 

Anyway, I was surprised to notice in your thread-you kept the stock 2.3 ecu tune with your swap?

 

Others (focus forums) have said a ecu tune was absolutely necessary with the swap-perhaps they are wrong.

 

How is your drivability?

 

Is that why you used the 2.3 injectors?

 

If not-why did you?

 

My old 2.3 pzev injectors have a lot of miles on them I plan on using the much lower mileage 2.5 injectors off the donor engine if at all possible.

 

Thanks for any help here.

 

Mike

 

 

 

....................................

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My car drove 100% mint. Idle , part throttle , full throttle all mint. I used the 2.3 injs because the stock tune in the ECU is calibrated off those, When you really look at how little the 2.3 and 2.5 are different it's really no biggie. The 2.3 bore is 3.440 the 2,5 is 3.50. That's only .060. The biggest diff is in stroke 3.7 vs 3.94. Sounds like alot but really split in 2. Piston goes up .120 higher and .120 lower. Nothing crazy.

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