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Discussion Starter #1
need help my 2001 focus spi engine dropped a valve seat and destroyed the block and 2 pistons.

I cant find a decently priced motor.

I found a short block minus 3 pistons for 100. i only have 2 good ones.

CAN I USE A PISTON and ROD OUT OF A ESCORT 2.0l spi engine?

I could not find any information about bore size and valve relief cuts about neither of the engines. All i found was they have different compression because of the head differences.
 

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get prepared for everyone and there mother to say just put a "zetec" motor in it..
 

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Hatch Nation #136
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get prepared for everyone and there mother to say just put a "zetec" motor in it..
And why not? There are a ton of them floating around and they don't grenade themselves unless you do something silly to them.
 

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Discussion Starter #4
ya. thats what i read but i dont feel like swapping wiring harness and computers...bla bla bla..... in the end it will cost me more to put in a zetec
 

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Hatch Nation #136
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Isn't it worth spending a bit more to know that you won't have to do it again?

Those SPI motors are notoriously unreliable.
 

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Hatch Nation #136
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But, if you are dead set on keeping it an SPI, I wouldn't just change one piston to something different. Change them all out so that the compression, weight, etc all match.
 

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Shot me 3 deer!!!
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no, they will not work, afaik, the blocks are very different. depending on the year escort, i believe they are 1.8 L or 1.9L. i'm pretty sure the crank is different, so you cant bolt them up.

there is a remanufactured SPI motor on ebay right now for 1400
 

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If you go to a FOMOCO parts web site you will find that the part numbers for the 2001 escort 2.0 spi and the part numbers for the 2001 focus 2.0 spi are the same for the crank,rod,and pistons.
 

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Discussion Starter #10
the only reason i am keeping the spi is that my buddy is a machinest and put forged valve seats in a head for me cheap. So the motor should now last awhile

Also this focus is my girlfreinds and she drives everyday to college so she has no money. If it was my car i would of attempted a duretec swap.

Thank you for all your input
 

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Aurelius Pardus
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if its worth anything I have 2 or 3 good pistons and a block. I'm sure it would be a lot to ship though.

edit: might actually be similar on shipping as the transaxle I was going to ship

edit again lol. didn't notice you found a short block already. I have good pistons from mine that dropped a seat too.
 

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YES - The Escort pistons will work but they must be from 1997 and up. The Tracer (Mercury) will work also - again 1997 and up.

It's the same piston in every shape, way and fashion - with the exception of the TOP RING only. The escorts/ tracers used a 'thinner' top ring.

You may want to look at mileage when selecting a used piston/assembly and also note that there are three different classes of piston sizing tolerances that they used to fit the piston to the blocks when building the block at the factory (this may have an affect on your compression - especially if you are doing any 'deep' honing of your cylinder wall on the affected cylinders)

Also be sure to get and keep the 'rod' 'end cap' with the piston. Don't mix and match end caps.

Also check new rod bearing clearances.........

Don't jinx me but I'm working toward 40k miles after replacing a Focus piston with an Escort piston.
 
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