Guys my cousin blew his s4 na the other day and I have a spare s5 NA laying around that I would like to swap. I have seen these threads a million times but the search function is teh ghey for some reason.

I know this is a pain swap because of the series difference. I have the s5 ECU as well and everything else. Please advise so I can get this kid on the road again. Thanks-

Derek

 

Emissions legal a requirement or not?

You could just swap injectors, TB (or wire it up to use the s5 TPS), ditch the E-OMP and go premix. The BAC and a few other things will be in the wrong locations. You could also just swap all the manifolds/front cover and be alright as well.

 

no, emissions are not a problem. I have the harness, ecu and everything. I need to get this kid back on the road. Engine ran great in the other car before i parted it out last week now this **** happens.

I want to know the easiest and most straight forward way to do this. I have seen these threads a few times but the search function sucks ***, or I suck *** at it.

 

Premix is a race mod, which would be retarded on the street. You really want to add oil to your gas EVERYTIME you get gas, hell i wish i didnt have to stop for gas.. let alone more time spent measuring and spilling and.. explaining.

Use the s4 front cover and manifolds, the EGR valve will have to be removed.

I know we put a s4 motor in an s5 vert at my old shop.. but i dont remember the details besides it used all the s5 stuff.

 

Im putting a full s5 motor into an s4 chassis.

 

Have you looked at Kevin's guides?

 

no, what are kevins guides?

 

i would like to keep the s5 manifold if possible. what is the wiring problem of using the s5 na harness and ecu?

 

yes i understand that, i was just stating the reverse is possible...

here ya go read this...

http://rotaryresurrection.com/2ndgen...o_s4_swap.html

 

Ok that is sort of general, NA to NA or turbo. I know with a turbo it can be a PITA. I have an NA and tranny together with harness and ECU, ready to bolt right in. Why do i need to swap front covers and all of that **** when it is plugging into an s5 ECU?

 

we're not telling you that you should. we're telling you that you have to.
http://rotaryresurrection.com/2ndgen..._s5_diffs.html

 

the reason I ask is because I see people swapping s5 intake manifolds onto s4's.

So lets make a list here from what I understand.

I will be using the S4 NA ECU and Harness.
I will have to remove the front cover along with the S5 OMP. I will swap it out with the s4 OMP and Front cover.

I will also put the s4 intake manifold with the injectors and all onto the s5 block. This along with the TB and everything else including the MAF. Will I still have to plug any holes on the block with s4 manifold?

And what about the emission block of if I am using all s4 na manifold stuff?

 

did you even read the write up?n s5 manifolds can be used, follow kevin's guide to the T.

 

Ok I seem to have a pretty good understanding of this now, blocking off emissions is optional though correct?

 

Ok I am having a rough day or I seriously need to quit toking because I am usually not this easily confused or noobish.

All I will need to swap will be the front cover and the TB along with the AFM? I wont need the water pump manifold or neck because I have a nig rigged setup I used in the other car because I was using a spare s4 radiator.

 

what about all of the solenoid ****? I always thought there was an extra solenoid plug on the s5 vs s4.

 

If you can't manage something as trivial as this, you probably shouldn't even bother attempting to drive as you're likely to far exceed your mental capacity.

 

oil metering was actually something mazda did for the lazy ***** that they knew would never bother to check a 2 stroke premixing oil canister.

people have been running 2 stroke in rotaries since they were introduced, that's alot longer than most here have even been living and we still continue to do it, not because we're dumb or it's a race mod! people who love their cars and want them to last do it. now go back to your trailer.

 

Why bother with it? Unless you don't have plates to block it off, I'd just simplify as much as possible if emissions isn't a requirement.

 

alrighty then. dont turn this thrread into a premix war. We will swap the S4 OMP.

So now the revised list.

i need to pull the intake manifold from the s5. I need to delete all emissions as detailed by Kevin Landers for the s5.

I need to swap the front cover which means removing all of that and the front pulley nut which is going to be a MAJOR pain in the ***.

I will swap the front covers and the s4 OMP as well at the s4 TB and intake along with my s5 emissions delete. Plug the harness back up and it is pretty much plug and play with the exception of having to reset the timing.

 

Don't drop the bearing swapping the cover. Sounds about right from what I remember, been a while since I've swapped anything using stock EMS.

 

i have decided to abandon this idea. The problem with the car from what we can tell is that the bearing in the rotor ate **** and killed the car. The car had a vibration problem for the longest time and it felt like it was the flywheel or something out of balance. It finally died on the freeway and is hard as hell to get turned over and u can hear it grinding. It was just rebuilt about 2k miles ago but the bearings were not relplaced.

I have an s4 motor with a blown rear rotor and I will just put the two together using a new soft seal kit for the rebuild.

 

Taking the easy way out!

 

once i realised how much a pain in the *** the front cover was going to be I would rather rebuild the motor. forgot i had another motor laying around.

 

Edited for being unnecessary.