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Old 02-18-2012, 03:25 PM   #1
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2002 Ford Focus to 2011 Engine?

I have a 2002 ford focus that needs an engine swap. I had a SOHC 2.0 Liter engine in it, but it recently went out. My question is if a 2011 DOHC could be put in the car? And what modifications would be needed. If this is impossible to put in, how much difficulty am I looking at in order to put in a 2000-2004 DOHC in the car? I have found that they are much cheaper than the SOHC. Thanks.


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Old 02-18-2012, 06:19 PM   #2
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Search the forum. There are a lot of resources on engine swaps.

That's about all I can tell you because I don't want to give you any miss information, but the switch from SOHC to DOHC has been done many times.
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Old 02-18-2012, 06:27 PM   #3
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Well I know a 00-04 SOHC can be switched for a 00-04 DOHC engine, but I'm trying to figure out if a 2011 DOHC engine can be put in a 2002
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Old 02-18-2012, 06:34 PM   #4
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Once again, I don't want to tell you something wrong, but the Focus didn't really change much between 2000 and 2011. You'll have to change out a lot of things (I think you'll need to change the wiring harnesses, maybe transmition, etc) but it should be the same basic stuff as an Spi to zetec swap.
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Old 02-18-2012, 06:38 PM   #5
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Ok thanks that helps.
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Old 02-18-2012, 07:03 PM   #6
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I suggest going for a 2.0L Zetec swap. I believe the newer Duratecs, both the 2.0L and 2.3L, can be swapped in, but I know for a fact the 2.0L Zetec can and is much simpler than the other swaps, or so I have been told.
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Old 02-18-2012, 08:07 PM   #7
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With a Zetec swap, how much extra will have to be added? Will it fit the auto transmission I have?
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Old 02-18-2012, 08:51 PM   #8
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Quote:
Originally Posted by Williamsps1 View Post
With a Zetec swap, how much extra will have to be added? Will it fit the auto transmission I have?
I believe they fit the transmission you have. I think they are the same.

How much extra? That all depends. I went to a junkyard and got an entire car for $500. This made my swap easier because I had everything to hand. If you are gonna go and get things separate, things are going to be considerably more expensive.

What I had to change for a 2.0L SPI (2002) to a 2.0 Zetec (2000):

Engine (Obviously lol)
Transmission(Was attached to the engine, put it in as one piece)
Main Wiring Harness
PCM
Security Key Identifier and Lock Cylinder (So I could use the key form the donor car)
Catalytic Converter
Power Steering Pressure Hose
AC Manifold Hose
Throttle Cable
Heater Hoses
Passenger Side Motor Mount
MAP Sensor
Exhaust Flex Pipe

I think that's about it. To get around changing the entire wiring harness I looked up a wiring diagram and spliced it in to the harness that is located under the passenger side floor trim. That way you don't have to rip apart the entire interior.
It is best to get a donor car and have it handy that way you have all the parts you need and (any screws you might loose. Haha) Drop the engine out of the bottom too. It is easier than using a hoist and bringing it out the top. If possible.

Let me know if you have any more questions. My father and I did it. He is a trained mechanic and luckily we own our own auto repair shop so we had access to lifts, tools, ect. Using information from this website, guessing, and luck we were able to finish in about four weekends, mostly working Sundays.
Just let me know if you need any more help.
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Old 02-18-2012, 09:28 PM   #9
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Thanks that definately helps.
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Old 02-19-2012, 01:07 AM   #10
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if people have done V8 swaps, im pretty sure you can put another 4 banger in their :)
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