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Old 08-11-2015, 03:51 PM   #1
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2003 cylinder head replacement (SPI)

Hi, I have a 2003 Focus that the intake valve seat went bad and the head needs to be replaced. I would like some advice on where would be a good place to get one. It is the single over head cam motor. I found on the web a place called just heads.com that put new intake seats in and regrind the valves and then you put in your cam, lifters. rockers when you get it for $200, has anyone delt with this company good or bad. Any advice would help. Thanks!


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Old 08-13-2015, 03:21 AM   #2
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From what I've seen, those motors drop valve seats pretty often so I'm sure anybody that replaces heads has a good amount of experience with them. Although, from what I've read, it's a continuous problem. The chances of it happening again are pretty large. Good luck.
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Old 08-13-2015, 08:39 AM   #3
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That sounds like a great price. I would do it.
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Old 08-13-2015, 09:51 AM   #4
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The SOHC/SPI head swap is fairly straightforward. I did such a job on my 1998 Escort wagon after the head gasket blew an inch long hole between cylinders 1 and 2 (which made for a fun ride home on the interstate for about 80 miles or so).

I think the site you are meaning is Cylinder Heads International / http://www.headsonly.com. A lot of people here, on the FEOA US Ford Escort forum, and myself have used heads by them. Most people seem to have had a good experience with them, but like with everything there are people who had a bad experience. I have used them twice once on the Ford Escort as mentioned above and once for a 1993 Chevy Cavalier where the head cracked, both times with good success.

In addition to the cylinder head you will need the following: head gasket kit, head bolt set, timing belt and timing belt tensioner kit, ideally a water pump and hoses, maybe a new thermostat as they are fairly inexpensive so why not replace it while everything is apart, and a few other things which I may have forgotten to list.

Of course if the valve seat did drop you will need to make sure no other damage to the engine happened, and also need to make sure to get all bits of the broken valve seat out the engine and intake manifold, lest pieces will be ingested back into the engine and damage all that work that was just done.

See many other threads on the forum for more details and pictures.
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Old 08-13-2015, 04:19 PM   #5
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THe SPI Performance section here has the most info. on your project:SPI Performance (2000-2004) - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum

Rebuilding these has become the main "performance" work done on them regularly.
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