I got a quick question. I have a zx3 with no AC and i found an SVT with a dead motor. I want to get that SVT and put in my ZX3 block in there. Will i have a problem with installing the SVT head on there? The ZX3 is turbo charged so im assuming i might have a slight problem with that. Or should i just find a complete SVT engine and leave it alone?

I think you should fix the SVT motor and put the turbo on that. The aluminum block of the SVT can handle higher boost than the iron one the standard Zetec has.

What about i Build a custom turbo for the SVT and keep the other turbo on the zx3. with the math i did the kit would cost me under a grand. either way ill need new internals for the SVT. i have some cheap SVTs coming up in a month or so on the auction. salvage title but i dont reallly give a crap about that cus it saves me a whole bunch of buck that i could put into the motor.

What about i Build a custom turbo for the SVT and keep the other turbo on the zx3. with the math i did the kit would cost me under a grand. either way ill need new internals for the SVT. i have some cheap SVTs coming up in a month or so on the auction. salvage title but i dont reallly give a crap about that cus it saves me a whole bunch of buck that i could put into the motor.

That works too [thumb]

I didn't know how much you wanted to spend. If you have enough to build another turbo fofo more power to you. You're a lucky man.

and ill be keeping updates when ill be building the kit too. i know the Turbonetics compressor that is in my roush performance kit is only 250-375 brand new so i wont be selfish and provide other foci owners with the info where to get what ill be using. so maybe there will be a whole lot more turbocharged focuses runing around the street. and they get good power. ive smoked a g35 with a slipping clutch stock ecu and 5 pounds of boost. im guessing they could put out a shit load of power when tuned right.

250-375 brand new?! I want one!

And yes a tune is a must for foci, especially the svt.
The great thing about the svt is that with upgraded fuel and ignition systems on stock internals with a tune you can run 17psi safely. I've heard of stock svt's doing 19psi, but were pushing their luck.

I think you should fix the SVT motor and put the turbo on that. The aluminum block of the SVT can handle higher boost than the iron one the standard Zetec has.


Wrong in so many ways [screwy].

#1 The SVT is an Iron block.
#2 Block material does not have as much to do with strength as wall thickness (among other variables such as combustion quality).
#3 The SVT block will not directly bolt up to his current transmission.


Far as I know, no one has currently swapped the SVT head onto a standard zetec (see there is an 'e' in the name of our engine). In theory so long as you disable the VCT it should work. 1turbofocus has VCT blockoff plates to acomplish this.
I'm close to doing the swap but a bit short on money. Had planned to be done by now but that didn't happen.
Only other thing that may be a hangup is valve clearance and the reliefs in the pistons. "Claying" the engine would tell you if it is a problem or not. If it is it shouldn't be too hard to fix by grinding out the reliefs a bit.
Also you will want to run the standard zetec head gasket or a thicker Cometic gasket from CFM to lower the compression some due to the smaller combustion chamber of the SVT head.

#1 The SVT is an Iron block.
I was mistaken. For some reason I was thinking forged block instead of internals.


#2 Block material does not have as much to do with strength as wall thickness (among other variables such as combustion quality).


Um. Wall strength has nothing to do with combustion quality. Different materials are stronger than others.


#3 The SVT block will not directly bolt up to his current transmission.


I never suggested he do so. I meant that he keep the motor in the SVT and fix it, then turbo it.

Ill keep that in mind. maybe if i find a cheap SVT head at a junk yard ill swap it over to my zetec. Could a solid Bimetal or a copper head gasket be used safely?

#3 The SVT block will not directly bolt up to his current transmission.



Why not?

Getrag fits on std zetec all you need is the correct flywheel/clutch setup. So why wouldnt it work svt zetec on mtx75? The block is exactly the same save the oil squirters, rods, and piston crown design

Off Topic. Iminhell....I have to point this out.....You pointed out his mistake in the spelling of "zetec", the name of the head gasket company you suggested is Cometic, not Cosmetic. Sorry!

every one makes typos. lol. lets not tear each other's throats out for it.

Why not?

Getrag fits on std zetec all you need is the correct flywheel/clutch setup. So why wouldnt it work svt zetec on mtx75? The block is exactly the same save the oil squirters, rods, and piston crown design

Did someone call?

I thought the SVT was just a Zetec block with high compression pistons, a dual stage intake, VCT, and different cams. IDK if the heads are different other than the VCT, so I'd look into that before taking apart your ZX3 engine. You might be better off by just swapping the 6 spd in your ZX3. You can rebuild the SVT block later- if it can be rebuilt. If you run these cars low on oil, the heads are trashed because the cam bearings are the head.

This is not the right forum for this discussion. I'm moving you to "Engine and Transmission Swaps". Technical Chat is for technical discussions relating to general maintenance, electrical issues, engine trouble, and recalls.

The pistons are not what give most of the compression, its mostly from the head. Yes the SVT crown does not have a dish but the concensus a few years back after some experimentation was that the SVT pistons dont add all that much compression.

the head is different. the holes for the intake manifolds are in different places to facilitate a better port angle in the SVT head. Plus the combustion chamber was vastly improved. And one side of the valves are bigger, dont remember which (edit, just found its the intakes). And then theres the VCT issue.

intake is on the head so it is not considered part of the block. Oil squirters, pistons, rods, oh and the motor mount. those are the only differences.

Why not?

Getrag fits on std zetec all you need is the correct flywheel/clutch setup. So why wouldnt it work svt zetec on mtx75? The block is exactly the same save the oil squirters, rods, and piston crown design

I thought there was something else but after reading again it was more with swapping the getrag into a zetec, issue with the extra layshaft and various wiring changes.


Off Topic. Iminhell....I have to point this out.....You pointed out his mistake in the spelling of "zetec", the name of the head gasket company you suggested is Cometic, not Cosmetic. Sorry!

Figured I had that wrong. TY for the correction.

im going to post this here because in general there is confusion about the difference between zetec/svt pistons. Thanks to Chris over on fj (cjmartinyzx3). Keep in mind that the crown height (distance from the wrist pin to the top of the piston) may be different so even though you see a dish on zetec and no dish on SVT, the compression difference between svt/zetec could still be less, null, or more. This is because on rods that are the same length, the crown height affects the deck height (distance from top of piston to top of cylinder bore) and therefore the TDC combustion chamber volume.

Judging by the reliefs alone, I would guess the zetec crown height is larger, meaning SVT pistons under a zetec head would actually make for less than 9.6:1. But that is just speculation.

http://zeebone.com/gallery/d/68754-2/DSC_4412.JPG

IIRC I had seen someone from CFM say that the zetec was a zero deck motor (actually 0.005"). So assuming that is true and the SVT/zetec having the same rod length one should assume that the SVT pistons will drop the static compression of a zetec and vise-versa. I'd also assume that if you'd throw a SVT head on a zetec that the deeper valve reliefs will be needed, due in part to the longer duration and the higher valve lift. The zetec is non-interference but I've heard that the clearance wasn't much and far greater than the 0.005", would guess the head gasket thickness accounts for some added clearance.

TY for posting that. I've been looking for a side-by-side for awhile now.

SVT gasket is .013" thicker than zetec

svt intake cam is .431 lift, Brad (mlbbaseball) is running a .050" shave and FR2's which are .382, bringing the total effective valve getting closer to piston distance to .432". So I would think the clearance would be no problemo.

[dunno] only way to be sure is either put this stuff together and measure or have someone with a mill and some spare svt and zetec pistons to measure the crown height. I have access to a mill, and access to some svt pistons, but thankfully no spare zetec pistons yet [wiggle]

Yes you can install the SVT head on the ZX3 short block and put it in the SVT , compression will be slightly higher

No you cant buy the Turbo from Turbonetics for 375.00 or less , I wouldnt buy it anyway it isnt a good turbo for the Focus , there are better ones at the same cost

Yes the MTX-75/Getreg trans will bolt up to either/all Zetec engines

Tom

I stick to my original post. Fix the SVT (if possible) and turbo that sucker. Unless you already have a build Zetec.

[QUOTE=iminhell;2816046]Wrong in so many ways [screwy].

Far as I know, no one has currently swapped the SVT head onto a standard zetec (see there is an 'e' in the name of our engine). In theory so long as you disable the VCT it should work. 1turbofocus has VCT blockoff plates to acomplish this.
Only other thing that may be a hangup is valve clearance and the reliefs in the pistons. "Also you will want to run the standard zetec head gasket or a thicker Cosmetic gasket from CFM to lower the compression some due to the smaller combustion chamber of the SVT head.




If i am not mistaken..the svt head is a direct bolt on. you do need vct delete from turbo tom.