89gtufc3s

i finally find a great clip to purchase but its an s4 clip and my na was s5.....at first it seemed fine but doing some more research gave me mixed messages.....mainly how some people OK it and others dont. One arguement i read sais not to mix and match flywheels and counterweights because "they are weighted differently"? is ther any way to get around this problem? thanks

iceblue

The whol counter weight deal is only for when you swap rotors from one G to another G. If you swap the motor and tranny as you will from a clip, the only bolt up issue you will have is the drive shaft.

I am totaly asuming you are referancing to a N/A to TII swap and not a motor / tranny replacement for your N/A.

If this realy is the case you can obtain a drive shaft just for this from mazdatricks, or have one made at any local drive line shop.

razorback

ive never heard of a driveshaft problem. as long as its na to na i see no reason why they will differ.

iceblue

Thats why I said I was totaly asuming he was refering to a TII swap. Reson being not meany people bother to purchas a full JDM clip just for another N/A engin.

He never fully specifyd what it was :-/

89gtufc3s

sorry if i wasnt specific enough..i asumed everyone woul know im talkin about a TII swap because their so popular....anyways when i said full clip i meant the whole motor, ecu, harness, etc, etc...because im not initially planning and doing the transmission and rear-end just yet (nor do i have the money)...im talking about using the na tranny in this swap...

SonicRaT

iTrader: (6)

Stay within the series, otherwise you're going to have an assload of things to change.

MARTIN

well, I personally performed an s5->s4 swap, using the stock ecu to run the motor for a while. My recommendation depends on how it will be installed in the car. If you want to keep the motor stock, with emmissions and all, then you should use same series motor unless you want to swap out a mess of things. If you dont mind blocking off certain components, then I would get either motor.

89gtufc3s

the motor im thinking of using has no emissions anyway.....what series flywheels did you use?

MARTIN

the flywheel works on either tranny. you need that series n/a flywheel(motor). So just take it out of your motor

SonicRaT

iTrader: (6)

It's a pain in the *** swap regardless.

A) The harnesses don't intermix between ECU's
B) finding a s5 harness/pressure sensor/AFM/ecu isn't an easy task
C) you'd then need to swap out injectors/front cover/turbo oil lines/waterpump/etc
D) if you used the S4 harness/ecu, you'd have to cut up the dash harness and rewire it with s4 plugs just to fit.

So, unless you're going standalone, this isn't an easy swap and requires a fair bit of changing to make work.

89gtufc3s

i already know that would be the case if the motor is the same series as the transmission....but its not in this case

89gtufc3s

ok ic....i wasnt planning to do the swap myself...i was hoping the guys at prather racing (rotary specific guys a couple hours away) could do this for me...

spitfire7

use the fly wheel that came with the motor and tranny that came with the clip. i did the swap and and still have issues , but thats allright, do this and ull b ok unless ur gonna run a haltech or something ull have to pull all the wires from the clip starting at the passenger headlights ele fan and all the wires that go back into the firewall / never mind its a j-spec car and and the harness is going to the other side of the chassis, so ull have to change ur chassis harnesses . the 1 under the hood ,and the 1 inside the car.

Rotary Racer

Word up

Lots of differences like; EGR's, injector impedances, different sensors, different ECU hook ups, blah de blah blah.

It's just better to stay within the same series.

razorback

n/a tranny and turbo motor = lots of broken trans, do the swap now, it will save you alot of hassle.

MARTIN

Excuse me? Im running n/a drivetrain, with around 400+hp. Any breakage? nope, but I also dont launch. Rolling only.

razorback

well do you think you would be breaking if you launched? i know of a few guys on here that break their na trans with n/a 210-230hp motors.

iceblue

Called abuse and pore driving. I think it be fine if you launch corectly without side steping the clutch at 7k

MARTIN

well not to mention that it wouldnt do anygood to launch, I just ride the clutch.
I have to "2step" in order for the turbo to spool and then launch. And seeing that when its at 8-10psi im probably around 380+ launching at those boost levels will just pretty much leave me there.