mxzxracer16

Hey guy's I have been getting mixed ideas on what will work. I have an 2005 e55 Longtube headers custom exhaust pulley,intercooler,pump, tunning. Im looking to add a throttle body now. Does anyone know the stock size? And is the 80 mm throttle body direct bolt on besides intake pipe? Also does the 550 82mm throttle bodies bolt up fairly easy with modified mounting? any help would be great. THANKS

blackbenzz

Stock TB is 74mm. "80"mm TB is actually 78mm. You can get a 80mm sc inlet and the 80mm TB will bolt to it and get the 80mm y pipe. You need to switch pins for the 80mm TB since it opens in the opposite orientation in comparison to stock. 82mm requires an adapter, porting, and some massaging of the 80mm ypipe to work but no switching pins if you buy a MB TB. Hope that helps and good luck

mxzxracer16

Thanks alot. Does anyone know where I can get the adapter plate for the 82mm Throttle body? Thats the only pieace that has me from not doing this swap. THANKS again

Adam

blackbenzz

You also need to port the sc inlet, don't forget that part.

Luke_M

Could you just buy a used 550 throttle body and Y-pipe and be good to go as far as hardware? Seems silly to buy a kit for $1,800 if it's that simple. I've even been considering doing a custom Y-pipe and intake setup but I'm not there yet.

mxzxracer16

Allegedly Im working on it now. I have the throttle body already. Thats why im looking for pointers.

theeddie

but where do you find a e550 throttle body

Luke_M

Cool. Would you be so kind as to keep me informed when you find something out? I tend to lose track of my posts here and don't always follow up lol

blackbenzz

No, you need to modify the sc inlet

Luke_M

I got that part too. I was thinking any machine shop or a good mechanic could do this. I just didn't know how involved it was. I have a lot of faith in my guy. I guess my question was, is this a part you have to buy. If you can just modify it fairly easily then that's what I was looking for.

I assume the Y-pipe is off the same S550 as well.

Road Racer

A1131400912
Is the part number for the MB 80mm plenum, or SC inlet

This for the OE MB 80mm ttb. If you are installing an 82, you would have to modify it in order to fit.

Im doing exactly this job right now.
Im installing an 82mm Audi TB, and waiting for this plenun.

I'll let you know how it goes when it finish

GL

mxzxracer16

Hey how come you opted for an AUDI throttle body and not an 550 MB t/b? Just curious I have an MB 550 actuator plug and play. Need to get a spacer machined now and port the sc

blackbenzz

Nope. The 550 is naturally aspirated and has an elbow that connects to the TB. No ypipe
MB TB is the way to go. Plug and play

OPTIONII

so which MB cars come with 80m TB stock?

Plataille

bump, lots of good information here for this swap, and the information as to which cars have the 80mm stock TB would be beneficial for everyone.

carguyshu

the SL55 in 07/08 I think is the only car that got the 80mm stock.

Robert AMG

iTrader: (1)

Early Sl55 w230 german version 2002 has the 80mm tb stock.

Plataille

s550 is 82mm stock, just got it measured

carguyshu

I was referencing the 55k motors. You need a Y pipe from an 07 or 08 SL as well as the SC inlet from one in addition to the throttle body.

cm60k

MB equipped 80mm in SL55 only from "2007 to 2011" with Engine #: (113.995), instead of 74mm from "2003 to 2006", with Engine #: (113.992)...!

ZAYED,,

HeissRod

So, do any larger TBs fit without modifying the S/C inlet?

shardul

iTrader: (1)

no sir

2000UZJ

Will a E550 82MM TB work?

Robert AMG

iTrader: (1)

i don't know from where did u get those info!
from 2 weeks i got in the garage an sl55 german version model 2002 supercharger stock car with vin wdb2304741f020843, this car has the 80mm tb from factory!! to proove that, attached are pics from EPC for this car, first picture to show u that this car has the engine 113.992 and delivery date 23/5/2002, the second picture is to show tb part nb (80mm) where they mentioned "up to end of model year 2002"
those will verify what i have said in my post above.

carguyshu

yea early 02 SL55 in europe got them, but in the US only 07/08 SL55 got them.