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Old 10-29-2008, 02:27 PM   #11
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Figured it out!

BTW THIS THREAD HAS NOTHING TO DO WITH TRANSMISSIONS OR ZETECS!!!! Go start your own thread about zetec to spi trans or whatever. This question is CVH SPI to CVH SPI related. Nothing to do with Zetecs at all! ANYWAYS, I bought an escort SPI 2.0L and compared the two. The escort spi to focus spi swap will not work. The block and head are incredibly similar, BUT, the only real yet crucial differences are that the bolt pattern and diameter are drastically different for the intake manifolds and the engine mount(On the passenger side of vehicle). Could you make them work? Possibly, but that would involve drilling, tapping, and making your own gasket. What about just the block you say? Well, the heads will swap and bolt up to either block, but The coolant ports are different on the back of the engine(Passenger side). I didnt bother to delve much deeper on the difference in blocks(i.e.: accessory bracket hole locations, timing parts holes) It looks like all of us valve seat droppers will have to bite the bullet and pay $1000 for a used CVH SPI engine. Then immediately sell the car to someone who doesnt know about this issue. Or do the Zetec/trans swap...
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Old 10-29-2008, 08:24 PM   #12
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hey, just as I said in the first reply to your post.

Originally Posted by oldcarnut View Post
Hey, when my spi did the same thing, I found the focus head is specific to the focus, but also found the escort spi will do the same thing at about 100k-120k miles, this came from about every machinist I talked to, this seems to be a design flaw with all the ford 2.0 spi motors. the auto tranny from a spi should bolt to a zetec motor, this swap is highly recomended as the zetec motors are bullit proof.
the whole spi zetec tranny deal was to give you the most accurate info, also by the way I did two threads on the tranny interchange two weeks ago but nobody could say either way. so i did some reasearch and let you know to try to save you some money.
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Old 10-30-2008, 06:25 AM   #13
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Here is some more specific confirmation I just found on

Although the basic design of the 2.0L engines has remained the same since ’97, Ford has made several changes to the block and heads over the last seven years, so it takes at least three short blocks, two heads and four completes to cover everything through 2003, including all the applications for both the Escort and Focus.

There have been three blocks used since ’97.

1997 – The original 2.0L block was a F7CE-AA/AB casting that can be identified by the PCV vent hole on the driver’s side that has three bolt holes in a triangular pattern surrounding it.

1998-’99 – There was one small, but important change made to the block in ’98. Ford added a machined pad for a knock sensor on the passenger side, right between the second and third cylinders, just below the deck surface. It would be pretty hard to add this boss to a ’97 block, so plan on using this later version for the ’98 and ’99 applications. Look for a F8CE-AA casting.

2000-’01 – The block was revised one more time in 2000. The YS4E-DA casting looked just like the earlier F8CE-AA block with the hole for the knock sensor on the right side and the pad for the PCV on the left side, but the vent hole wasn’t machined and the three small holes around it weren’t drilled because the PCV system was changed so they were no longer needed.

2002-’03 – We’re not aware of any specific changes to the block in 2002, but the Ford catalog shows a different part number for the short block, so there may or may not be a difference in the block.

There have been two heads used on these motors, one for the Escort and another for the Focus:

1997-’02 Escort – The original split-port head (c/n F7CE-AA) that came out in ’97 was used for the Escort until it was finally discontinued in 2002. It has a "Dee" shaped chamber, beehive springs, two intake ports leading to each intake valve, and eight 8.0mm bolt holes that are used to attach the intake manifold.

2001-’03 –When the 2.0L engine was installed in the Focus, it came with a unique cylinder head. It still had the split ports, but there were seven 6.0mm bolt holes arranged in a slightly different pattern for the intake manifold. This head also had four big bolt holes in the front for the torque-axis motor mount that was used on the Focus. It’s a YS4E-DA casting. It will bolt on to the other blocks but the intake manifolds are not interchangeable. The axis motor mount (top mount on the passenger side) will not interchange due to the difference in the bolt patterns. It may be possible to make it work.

The Escort came with a plastic cover behind the timing belt, but the Focus didn’t have one. The one that was used on the Escort is available as a part number F7CZ-6019-AA.
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Old 07-05-2009, 09:42 PM   #14
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I've a 2000 Focus SPI. The casting number on the HEAD is: RF-YS4E-6090-CC

I've seen a 2001 SPI. The casting number on the HEAD is: RF-YS4E-6090-EA
Don't know if it's original.


I've seen a 2004 SPI. The casting number on the BLOCK is: YS4E-6015-DA
Don't know if it's original.
Member of the Dropped Valve Seat Club.
Replaced #4 Piston, Rings, Rod+Bearings, AERA Re-Manufactured Cylinder Head and a light Hone. Then CLEANED the hell out of everything.
60k+ miles.
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Old 08-19-2013, 06:02 PM   #15
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what other ford uses the engine 2.ol casting #ys4e-6015-da....
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Old 08-20-2013, 02:13 PM   #16
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The focus SPI block and head are exclusive to the Focus. Is that what you are asking?
Defending the reputation of the red-headed step-child of the focus world for far too long.
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