Upgrade Help Needed!!!

[ts_MKIII]

ok well the time has come and i am doing the na> t swap.

Now i only have a couple of questions.

First if i have tht ecu and wiring harness from the turbo model, would i be able to just swap out the ecu's, or will i have to still rewire??
(i only ask because many people keep their stock ecu and just re wire it to the point where it needs to be re wired to be able to work.)

secondly, i know the tach wont work from an na does any one know how to fix it, or can i just simply use an after market??

thirdly, is there a lot of rewiring involved if i do the ecu swap mainly im asking in acc. wise, such as power steering and charcoal canister etc.? will it be a basic motor swap or will everything have to be changed!

lastly, i would like to thank all, i also the fact that you guys gave me that link to that site is extremely helpful i learned alot.

 

[lagged]

if you are using the turbo ECU youll need to use the turbo wire harness that plugs into your ECU.

with this you will need:

CPS
COIL PACKS
AFM
TURBO IGNITOR

and thats all i can think of right now.

major caveat that i can think of ECU wise.....your NA block only has ONE knock sensor. your GTE ECU will be wanting TWO. so youll have to figure out some way around that.

 

[ts_MKIII]

yeah of course, i will be getting basically a front clip whoole swap, turbo motor, afm, etc the other parts ill probably find around, but with that i should be fine, with both the harness and ecu from a turbo it should be a basic plug and play motor swap correct??

 

[Squid699]

so long as the engine/ecu is from the same year (or year range 87-88, early 89, late 89-92) then it will be plug and play. What trans and diff will you use? Some people use the W58, but I had a whole Turbo car to grab parts from, so I switched to R154.....after some upgrades I did this:

 

[ts_MKIII]

well i dont think ill have a r154 i might just keep my stock w58...
the thing is im getting the ecu harness motor turbo etc all from the same year...

but small things like ignitor coils and other acc. i might have to retrieve them from some where else.. so

it should be ok then right..

 

[Squid699]

so long as the engine harness and ECU are from the same year, you can get the CPS, Coil Pack and ignitor from whatever year you can get your hands on - all are interchangable. I wouldn't bother with the stock boost gauge and sending unit (black box attached to the silver resistor box next to the ingitor on the turbos) and just get an aftermarket boost gauge and keep your stock voltmeter......

 

[ts_MKIII]

yah actually thats what i was going to do, i already have a greddy boost gauge on order as well as a tach, the thing is i want to know that since i will have a "dead" tach (na tach does not respond to turbo motor) can i just use an after market tach??

 

[bluemax]

Yup... the tach on the NA and turbo are different.
I got the tach from a turbo car and put it in the NA gage cluster.
(So I don't have the stock boost gage.)
I also have the W58, as Squid mentioned above.

Oh, the intake, throttle body and throttle cables are different so you'll need those.
You'll want the oil cooler and lines from the front clip also.
I'd go with an aftermarket down pipe, aftermarket intercooler and hard pipes (if you have the money).

You might need the radiator also. My NA radiator didn't cool enough so I had to get a custom one built. But that might be just a problem with my motor.

 

[ts_MKIII]

well the thing is its not an actual front clip more like, i was going to do the 1 jz but wanted to stick with the 7m becaue of its versatility and unlimited paths of upgrades and so on. so after much debate i decided to just stick with the 7m so i gave my freind the contact number of the vendor of the 1jz. thus leading me to the point, i will be getting his 7m which is in really good shape, now because its not a "front clip" but an actual car, i want to take all neccesary measures to ensure that my friends car is not damaged. so what will i need from his car as in motor wise, since he is getting the 1 jz what should i be able to pull of of his vehcile?? thanks for everything orig., i was doing the 1jz so all my swap knowledge is on that path, lol. and thats why i dont know to much of the swap haha. thanks again.

 

[Squid699]

regardless of where you get them you'll need:

turbo tach (like bluemax, i just put this in my NA cluster)
engine (both manis, turbo, etc)
AFM
Downpipe at least (will bolt up to stock NA exhaust, but aftermarket DP and cat back are HIGHLY reccommended - trust me)
engine harness
ecu
cps (should be on engine)
coilpack (should be on engine)
ignitor and resistor on driver fenderwell
IC and pipes
throttle cable
OC and pipes

Things you should get - good preventive maintenance while it's out
all rubber lines and vac lines should be replaced
new motor mounts
new trans mount
new clutch
new oil pump (even if you dont rebuild, it would be a good peace of mind measure)

and the transmissions have different support wings, dust covers, flywheels, clutches, clutch lines, master cylinders, slave cylinders, driveshafts, etc, so make your decision early for what trans you want to use and get the parts accordingly.

I had no poblem running an NA Rad. They should be the same - but an old rad won't cool worth a damn , no matter what it's from.

 

[bluemax]

Squid said it.
I would like to add that I didn't change the oil pump, and I regret it. They pump was supposed to be tested, but the pressure was much lower on the JDM motor I got than the NA I removed.

Also, the fan on the turbo has more blades than the NA. So I went with an electric FAL dual fan. It fix just right on my aftermarket radiator and should fit the same on the factory radiator.

I stuck with the W58 tranny, but if I get a chance, I'm going to a R154. If you have a chance to go with the R154, you probably should do it, because it gives you more room for higher HP when you go to the mods.

 

[ts_MKIII]

well i dont know if i have one the radiator that is, my radiator fan of course is in the center, then i have to the right or it are 2 smaller fans, vertically arranged is that the type of fan you are talking about.

also what should i take of my na to use on my turbo motor? should i get the oil pump??

 

[supradan22]

N/A cams and buy a new Oil Pump

 

[ts_MKIII]

ok now what else should be done while the motor is out becuase it jsut got a nead mhg so what else??

 

[Squid699]

honestly you should do a full rebuild, but at the very least plastigauge your main and rod bearings to see how close to spec they are. if they're too far out you're going to be forced into a rebuild anyway. MHG and ARP's are always a good idea, as well as valve seals.