I believe the 2.5 comes standard with VCT. Which means you will have to get an ECU to go with the engine. And since it isn't in a Focus, that will make the swap even harder.

Not saying impossible, but its not a plug-and-play engine.

 

Moved to Engine and Transmission Swap.

 

Is the longblock physically the same dimensions and a direct bolt up?

If one were starting from scratch to build a performance replacement motor for a 2.3 duratech focus, the 2.5 would be a drop-in but not a plug-n-play?

Disable or eliminate the VCT, swap all external accessories, and what else so it would work?

 

I have made a prototype VCT Elim for the 2.5 now and working on making everything a bolt in for the 2.5

Tom

 

If a guy were planning on building a new shortblock for heavy nitrous use, starting with a 2.5 core looks to be an equal cost propositon as a 2.3

 

if a guy were building anything for anything, the 2.5 looks to be the best choice unless he has a 2.3 just laying around. cant wait to see the first 2.5 swapped car

 

From my quick research it seems so. Same overall engine package but bigger bore block with a longer stroke factory crank, that's steel not cast.

If you are doing a complete junkyard replacement motor, or had planned on buying a good crank kit for a 2.3, starting with a 2.5 core seems to be the better way to go.

 

and the ports on the head dwarf the 2.3's [clap]

 

Why isn't eveybody using 2.5 cores to start their performance motors?

 

Posted via FF Mobile

 

What car does that 2.5L i4 come factory in

 

The wiki listed in the first post will tell you all the models.

It replaced the 2.3 in 2010 Fords, and there are the Mazda versions also.

 

The Mazda 2.5 is totally Diff , the Ford 2.5 out of the Fusion is the best swap

Tom

 

I asked mnths back about asking my 2.3 from the 88mm to a 89. Was told not a good idea. But really? Could I?

Also seen a 25. turbo Fusion at Carlisle Pa Ford Event. 290hp with only 7lbs boost.. I would like to try a 2.5 in my focus or build the 2.3 up more.

 

I have been playing and posting some about the 2.5 I am working on to go into the Focus

Tom

 

NICE.. Hope it works out for you Tom. Then that means FUN for US..

I finally got my 2.3 after trying to for 4 mnths NOW.. I see at Carlisle that the 2.5 is SWEET to have.. My luck. LOL

 

Hi guys,

I had put duratec 2.5 l4 into my focus MKII 2006 (1.8 liter with IB5 MT gearbox). Engine originally from Mazda 6 with VVT, engine code: L5, but 4 cylinders in line.
Detailed change are as following:
1. remove VCT, and welding to stop the oil plug
2. change fuel injecter from 1.8(4 holes) to 2.5 (12 holes)
3. change airintake manifold
3. change air throttle controal from 1.8 to 2.5 (original from Ford Fusion 2.5 l4 2009)
4. carryover 1.8 damper pulley
5. change damper pulley belt
6. remove the balance shaft (considering to fix it again, but need to modify the oil pan)
7. carryover 1.8 cylinder head cover
8. rewrite 2.5 turning to replace original 1.8

Most components remain in OEM condition.

 

Same balance shaft delete as 2.3? (remove & plug oil hole)

 

....

 

I am not sure, 2.5 balance shaft is same as 2.3. Really, somebody says they are the same.
Just remove the balance shaft, not to stop the plug, that is why, I can put it back. Because, when my car (with 2.5 engine) running 120 km/h, rpm is 3500, you can feel the viberation. I think it would be health that engine with balance shaft to reduce the viberation.

 

I don't think ECU will support duratec 2.5 I4. It is match with Ecoboost.

 

Hey guys,

I'm sorta new to the Duratec boards. I recently inherited a '99 Cougar with a Zetec and (unfortunately) an automatic. Being a mustang guy, I want a bigger engine that has more potential (than the I4) to go fast, and that's where my series of questions begins, so here goes:

• What would be involved in making a swap from a Zetec to a Duratec?
• Would it be more practical to just buy a Duratec Cougar? (thinking about buying a rear-ended junker as a donor)
• I saw some Duratec engines on sale on ebay for only $600+. Seems unusually cheap, is that the normal going price or is something wrong with them?
• Does FoMoCo sell crate vehicle treat Duratec engines (particularly the SVT Contour block) like they do with the Mustang 4.6L?
• I've been trying to find out who moulded the Cougar S concept car's body kit, anyone know if it's sold on the market? (the sweetest body I've ever seen on a Cougar)
• I know Paxton and Vortech make centrifugal superchargers for the Duratec, is there a twin-screw supercharger on the market as well?