Engine replacement

Aside from checking out local import yards and such, I'd just buy online.

I've read that putting the ZE in an OBII Mx-6 is a pain, but I've yet to hear or read why. If you're not caring about performance, I'm sure you could pick up a DE online easily too. The ZE I don't think would take THAT much longer to swap. Just rerouting the vacuum lines, and it should still run on the OBII ECU, just not to it's full potential. Probinator offers a chip, I know, as well as a few other people I'm sure off, that could solve this. Shouldn't be too long to install a chip, but I don't know much about that, I'm no electrician, or annything even close. :tdown:

The only other thing would be sealing off all EGR stuff on the exhaust if you stuck with the stock exhaust.

But if it's more than you want to deal with, I'd be looking at buying a DE perhaps off here from someone who just got a ZE or whatnot, or searching offline. But the ZE should run off everything stock, just not at it's best. Depends on if you deal with the exhaust so you don't have any holes in it, ect...

Oh, and you'd need an aftermarket intake. Could just throw a cone filter on your VAF though...

Anything I missed out, or you want me to talk more of?
I'll try to help as much as I can, but I haven't messed with anything of the such yet. So I can only point you, lol...

Thks for the replies, I've got a co-worker who's brother is fed up of his sons project. He's tired of putting money on the car so he's selling the car, it's a 94 ls with aut trans. with all the klze gooddies. He blew the trans, so if the price is rigth and the engine runs well, i'm picking it up tommorrow... Now the desicion is if I swap everything on my 96 body or if I slap in the man trans and cluth on the 94 body....

Does the ECU work on any transmission or is it different for atx/mtx.... The ecu ain't chipped, i've got excellent soldering skills, is it something I can do or it needs to be reflashed... Also is it possible to flash an OBD II ecu to work for since I would like to use the car while it's worked on...

is the megasquirt used only on unmoddified ecu's or is the ms essential for all ze setup

rebelz99 said:

Thks for the replies, I've got a co-worker who's brother is fed up of his sons project. He's tired of putting money on the car so he's selling the car, it's a 94 ls with aut trans. with all the klze gooddies. He blew the trans, so if the price is rigth and the engine runs well, i'm picking it up tommorrow... Now the desicion is if I swap everything on my 96 body or if I slap in the man trans and cluth on the 94 body....

Does the ECU work on any transmission or is it different for atx/mtx.... The ecu ain't chipped, i've got excellent soldering skills, is it something I can do or it needs to be reflashed... Also is it possible to flash an OBD II ecu to work for since I would like to use the car while it's worked on...

is the megasquirt used only on unmoddified ecu's or is the ms essential for all ze setup

Click to expand...

Well I will tell you swapping the MTX into an ATX car is no picnic. I could give you a laundry list of stuff you will need to complete the swap. Infact the thread is here:

http://www.mx6.com/forums/2g-faq-pe...nsmission-swap-2-5-v6-parts-1-2-complete.html

BUT...IMO putting a ZE into an ATX MX6 is a HUGE waste of time and money. My old DE engine I had would bounce of the rev limiter for like 2 seconds before my ATX tranny finally shifted and it was a ROUGH shift, but I found it hilarious. Probably a reason why your buddies ATX blew, our ATX trannys are CRAP. I could probably put it on a firefly and blow it up LOL. Best thing I ever did and most people will agree, putting an MTX with a KLZE is the best thing you can do if your gonna do the swap. I mean look around the forums, how many ZE powered 6's do you see with an ATX in it?

As for the ECU, YES there is a difference between the ATX and MTX ECU's. When my car was in the shop for the first stint the mechanic mentioned he had left the ATX ECU in the car but when he got over 70 KPH, the car would cut the fuel and die. Our guess was it was a safety measure. So you will want a MTX ECU.

Now dropping it onto an OBD II chassis. Well IMO all it shows is how well you can jerry rig. The KLZE engine was not OBD II, if memory serves it is not an easy task to perform. There are about 100 threads on how to do it, but I can quickly summarize.

1) You will need the 2 MSD window switches and an adjustable fuel pres regulator to control the VRIS solenoids and fuel curves.

2) As for the EGR, most people block it off and deal with the code. It is not a direct swap. This thread explains how to install an EGR onto a ZE manifold.

http://www.mx6.com/forums/2g-faq-performance/77781-klze-intake-manifold-im-installation-guide.html

Confirm this will work though as the writeup was made for hooking up an EGR to a ZE manifold going onto a DE. Personally if your not worried about emissions and the CEL than no need to worry about the EGR, just make sure all the holes are plugged in the exhaust.

To my knowledge I have not heard of anyway to flash or chip an OBD 2 ECU to work perfectly with the ZE. Probinator's chip does NOT work on OBD 2 cars, only OBD 1.

Personally I would rather have a ZE on an OBD 1 car and without question on an MTX 6. Most will agree with that.

but it's your choice, but dont be afraid to put a little work into her, your labour will pay off