Has any body ever done a sohc to a dohc engine n a focus. I know it has been done but i would like some info on this change. I hear i will have to change a axle, pcm, wiring harness, and possible the motor mounts? .Any info would be great thanks
focus sohc to a dohc engine
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Everything is a direct swap but you'll need all the engine wiring, PCM, transmission, axles etc.
Best bet is to find a donor car so you've got access to everything.
Best bet is to find a donor car so you've got access to everything.
I had asked this in another forum, no response.
My focus died, a valve crapped out and the head and one piston are shot.
I found a DOHC car, hit in the front, but engine is supposedly good.
Can I do this? Trying to salvage a lot of money put into this car before I go parting it out, and I only have about a day or so more before I have to do that.
My focus died, a valve crapped out and the head and one piston are shot.
I found a DOHC car, hit in the front, but engine is supposedly good.
Can I do this? Trying to salvage a lot of money put into this car before I go parting it out, and I only have about a day or so more before I have to do that.
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try to find a newer focus with the 2.3 duratec... the zetec is pretty much dead as far as R&D goes... sad to say.
Ok, well I've been doing more searching, this is what I found:
http://www.focusfanatics.com/forum/showthread.php?t=156676
Is it really necessary to go through all this work to put a DOHC engine in an SOHC car? Is the Zetec gonna be as much work? More work?
http://www.focusfanatics.com/forum/showthread.php?t=156676
Is it really necessary to go through all this work to put a DOHC engine in an SOHC car? Is the Zetec gonna be as much work? More work?
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he did a zetec in that thread, so yes, its gonna be just as much work. while there are a lot of things that are shared between the 2 motors, there is still ALOT that has to be changed to put in a zetec. ECU, wiring harnesees, engine mounjts, tranny,and various other bits
and honestly it isnt enough of an upgrade to warrant all that work, id just slap a turbo on the SPI, get it tuned, and roll with it, youll be taking any N/A zetec out there. and poss a few F/I zetecs too depepnding on your set-up.
bryan
and honestly it isnt enough of an upgrade to warrant all that work, id just slap a turbo on the SPI, get it tuned, and roll with it, youll be taking any N/A zetec out there. and poss a few F/I zetecs too depepnding on your set-up.
bryan
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The problem with that is that he ends up with another SPI that'll more than likely drop a valve seat anyways.ladybug04 said:
I've seen multiple SPI's dropping valve seats over the last year or so, I don't know why but they do and when it happens it pretty much destroys the engine.
No offense to the SPI guys here but if you go the SPI route I'd find a way to get rid of it as soon as possible.
One local guys dad had an SPI that dropped a valve seat so he had it repaired at a machine shop. That head dropped another seat almost right away.
I sold him a reman SPI which lasted a few months and then smoked the bottom end bearings, it was replaced under warranty by a 2nd reman unit that had issues right off the bat so it got a 3rd reman unit put in.
Not real promising if you ask me.
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true, it is a good idea to get the head worked on and get the hardened valve seals, thoug i have had my SPI since new, and have 120k on here of Hard miles, and have done anything internally, and she runs like a top.
but my point still stands, the SPI to Zetec swap isnt worth it, if your gonna swap, it should be at least to a Duratec. once i can find a donor, im gonna drop a 2.3 in my SPI focus, and have a suitable starting platform.
bryan
but my point still stands, the SPI to Zetec swap isnt worth it, if your gonna swap, it should be at least to a Duratec. once i can find a donor, im gonna drop a 2.3 in my SPI focus, and have a suitable starting platform.
bryan
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236 Posts
seconded. i'd only go for a Duratec (preferably the 2.3, but i dont even know if i can find a focus with a 2.3 in canada). seems to be super easy to find upgrades for the D tho.ladybug04 said:
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I'd third the Duratec swap, find a donor car like a rollover or something and go to town.
The only way the Zetec swap makes sense is if the donor car is SUPER cheap.
The only way the Zetec swap makes sense is if the donor car is SUPER cheap.
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i almost got my hands on a rolled SVT for the cheaps 2 months ago.FORDSVTPARTS said:
but i found out it rolled AFTER breaking the front axle and an engine mount going off a jump.... =(
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I still don't understand why everyone wants to replace a weak engine with more weak engines. Sure, the Zetec and Duratecs both have potential, but if you are going to buy an engine from a wrecked car, why not go bigger/better?
Contour V6 swaps are available, as are V8's. Hell, a tiny local machine shop told me that they'd put any engine in any car.
Contour V6 swaps are available, as are V8's. Hell, a tiny local machine shop told me that they'd put any engine in any car.
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I have an svt and agree that duratec is the way to go. Countour engine = dead, duratec is in production and getting at least SOME after market support for our platform.
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Yeah, so I have an SPI, I've owned an SVTF, and had a 2.3 Duratec in a Mazda 3.
If I were gonna' do the swap, I'd SERIOUSLY try to get something with more power.
If I were gonna' do the swap, I'd SERIOUSLY try to get something with more power.
Well, I pulled the block out yesterday, man, that was fun, no engine hoist. Somebody wants to buy it.
I hate to say it, but this focus is done. It did last 220k, it's actually a shame because a single valve has ended this car's useful life, I just can't commit myself to putting more money and work into it.
If the ZX3 DOHC engine would have been a near direct swap (headers/intake, maybe a few other odds and ends), I'd have done it in a heart beat. I'm not dropping another SOHC engine in this to have it die in six months or a year.
I guess my biggest mistake was thinking my 17 year old would have destroyed the car before it needed a clutch (spring popped), alternator, shift cables. Granted, these parts aren't prohibitively expensive, however, the clutch had to be done by my mechanic since I don't have an engine hoist, the shift cables require a special tool-again the mechanic had to do them. Alternator is no big deal, but I've gotten well beyond the point of no return.
I hate to say it, but this focus is done. It did last 220k, it's actually a shame because a single valve has ended this car's useful life, I just can't commit myself to putting more money and work into it.
If the ZX3 DOHC engine would have been a near direct swap (headers/intake, maybe a few other odds and ends), I'd have done it in a heart beat. I'm not dropping another SOHC engine in this to have it die in six months or a year.
I guess my biggest mistake was thinking my 17 year old would have destroyed the car before it needed a clutch (spring popped), alternator, shift cables. Granted, these parts aren't prohibitively expensive, however, the clutch had to be done by my mechanic since I don't have an engine hoist, the shift cables require a special tool-again the mechanic had to do them. Alternator is no big deal, but I've gotten well beyond the point of no return.
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if its for your kid just get them a 82 civic thats got easily replaceable parts. it'll teach em engines and give them an appreciation for nice cars should they ever get one. 
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