jackasswhy

hey guys, i was looking around on the c43 forum and noticed they have a thread dedicated to swapping the engines out to a 5.4 amg engine, with no ecu modification. MY question is this, 1. they are similar engines, will it be direct fit like with the c43 people? 2. will i need to tune the ecu, the c43 do not.

jackasswhy

oh and i forgot, will the tranny be able to handle the extra power

tusabes

I dont see why it wouldnt be the same as the c43 to AMG 5.4 swap.

Though its likely cheaper to simply sell the 430 and buy a s55.

jackasswhy

although it may seem cheaper to buy the 55 its really not for me. The engine costs me 2k. I have ashop so labor is not a problem. It also helps that I have the 03 w updates and don't have to worry about abc. I also knoe that my car is in great condition, which might not happen if I buy something else.

jackasswhy

Does anyone know about the ecu thing ? That is the only thing holding me back at this point. I have an 01 s55 ecu but unsure if that will work without programming since mine is an 03

tusabes

i dont see why it wouldnt work... if the ecu works on the c43 and the 5.4 swap, it should work on a s430 with a 5.4 swap.

you wouldnt want a s55 ecu because that will expect an ABC suspension setup to be in place anyway.

since your labor is free , try it. youve got nothing to lose but your labor.

if it doesnt work put the 4.3 back in and resell the 5.4 motor to somoene else. you might even make money selling it

Frank_S500

Hi, Jackass.

I would say you can keep your existing ME ECU but I see the main issue in the coding of the ME.
With the newer cars this can only be done with Stardiagnosis and SCN codes provided MB VeDoc factory database.
So unless you cannot manipulate VeDoc to get the correct SCN codes or you have a kind of SCN code generator you will probably fail.

Using the ECU from the donator car will also be difficult because all the other anti theft related units wont accept this ME and you cannot start the car..

Keep me posted..

Frank

jackasswhy

hey frank, i was thinking something similar to what you were thinking. I guess the approach im going to take is to try and start it as is. should that not work i will take my harness and swap the outer parts from old engine to the new one and see if that will work. lastly i will go with the ecu tune. what you think?

Arnee

Is the firing order the same for the 5.5 AMG motors and non-AMG motors?

jackasswhy

i dont have my mitchell here ill check tomorrow, but i think they are.
here is an update though from what i have gauged so far.
1. the airflow meter, knock sensor, crank sensor, fuel filter, trans filter, oxygen sensors are all the same prt numbers.
2. the fuel injectors are not
3. this leads me to believe that i will not need the wires and can continue to use mine without swapping from my old engine to the new one.
4. i know the transmissions are diff, although same prt numbers for the filter, do you guys believe that the housing is the same though?

jackasswhy

scratch that the firing orders are the same!

Arnee

That's good info.

I'm thinking about doing this to my E430 myself if/when the time comes since it already has 185k.

Hercules86

a NA 5.4 engine will be a direct drop in swap without any problems at all.


the stock tranny on the s430, s500 is practically the same as the supercharged s55. its rated to handle 590lbs/tq.


if you decided to drop in a supercharged 55 engine then your best bet would be to just get rid of your s430 and upgrade to an s55 since they can be had in the low 20K range.

jackasswhy

do you know if the bell housings are the same?

Arnee

What about fuel mixture and different timing? Maybe a tune is necessary or AMG ECU for the 5.4L motor?

jackasswhy

the c43 guys have successfully done the swap with no ecu modification and because our cars are soo similar im assuming this will be the case for the s

e500slr

Did this thing eventually get around to being done?

jackasswhy

been really busy, i have all the parts. everything shold b plug and play

e500slr

Well I, or to be specific a buddy of mine who's S430 engine gave way might pull the trigger on this. The reason is the M113 (non supercharged) 5.4ltr V8s are going for cheap these days, the S430 engine price the dealer gave my buddy just doesn't justify not doing this, if it's P'nP then there shouldn't be an issue.

Can you share the parts needed for this. Most have said the S430 ECU will work with the engine as the C43 to C55 have succeeded. What else do you need to consider? Any bugs and little issues at all?

Fraser

e500slr