Ted Baldwin

.......the W211 E55 stock TB is 70mm. What is the diameter of ours?

Ted

ProjectC55

I think 65 or 64 mm! Rich (Mbenzman) could tell you for sure!

Ted Baldwin

...........thanks. I have a TB from my G55 that I removed when I upgraded to the Kleeman 80mm TB. I was about to sell it when it occured to me that I may be able to wap it into my s/ced W210 e55. I wonder if it can be a direct swap. I'll ask Rich.

Ted

E55 KEV

Dumb ? What's a TB?

JamE55

C'mon Kev! You're brighter than this! Throttle Body.

Ted,

I think our stockies are 68mm.

Ted Baldwin

........You are right. I just confirmed that our stock ones are 64mm and the stock AMGV8K ones are 74mm. I am not exactly sure how they are measured. My ruler tells me that the inner diameter of the AMGV8K TB I have on my desk is 70mm, but I must be measuring it differently.

..........JamE55, in an old thread you mentioned that you were doing a TB upgrade. Is that completed? I am looking for a completed kit. I also don't mind having my car used for R&D if the labor can be free. I already have the part.

Ted

E55 KEV

I was testing you JAM!

jeff.bisonett

Ted,

What is the expected hp gain?

Ted Baldwin

..............best answer is that I do not know. The W211 E55 guys are getting 15 or so RWHP from the TB upgrade, but their cars are s/ced. I am not very knowledgeable about this and I am looking for someone who has some first hand info. I can only imagine how much it will cost if it was done experimentally at an hourly labor rate, especially if custom fabrication is required. I thought JAME55 has had this done, but I'm not certain. Maybe He will chime in.


Ted

JamE55

Ted,

Check PM.

jimmydagreek

Oh so now there's secrets huh???!!!

jeff.bisonett

Maybe James should head to the dyno and post up his sheets....

I am running Kleemann s/c... if the price is right, I'd do it for 15 whp... as long as driveability is not sacrificed. Keep us posted, Ted.

maxwerks

Ok..... if the TB is enlarged on our NA cars, should that make any difference UNLESS the amount of air is increased? Meaning even if putting a larger TB on our cars with the stock air box, that shouldnt yield anything , right? I bought a new OEM TB recently and I was going to experiment with porting/polishing it given that I still have a stock air box...any thoughts?

NitrogenBalance

There was an old member "grumpy666" who knew some pretty interesting stuff. I recall he once wrote about how to tell if a TB was properly matched to a motor. I don't recall if it was applied to N/A testing F/I or both. However, if I remember, it was explained that intake vacuum should be tested at the TB during acceleration to WOT. Our TB's actually have a nipple which would allow this.

From what I recall a properly sized TB should show only the slightest bit of vacuum when the motor is running at WOT, showing no restriction. Where a smaller TB would introduce restriction as sizes got smaller which would be seen as intake vacuum measured at the TB port.

I could be way off with this, but I remember reading it and it makes sense in my head.

I've got an extra TB from an ML55 if anyone wants to play with it....

ProjectC55

Did'nt I tell u this in the 2nd post! And you give JamE55 the credit!

mertd93

All M113 500 motors and N/A AMG 55's have 74mm TB's Part # is 113 141 01 25, There is NO such a thing as 64mm .
AMG 55K 74mm TB- 113 141 06 25
AMG 55K 80mm TB- 113 141 05 25

ProjectC55

I have to agree.

I have Albert's E55k throttle body here that I have to send back and it's the same exact diameter of the stck throttle body I have on my car now (N/A113)!

NitrogenBalance

Anyone want the ML55 TB I have to mess with it. I'll let it go cheap as I keep moving it from drawer to drawer in the garage. I think a few people here had their TB's ported a while ago.

E55 PWR

Throttle body is usually one of the last modification you do b/c it requires a decent amount of airflow to net any legitimate high end gains. The gains are always in the last 1000 rpm of the powerband, they prevent the power from dying off as quickly after peak HP is reached, usually the power will just level out instead of falling off, or might even keep going and peak at higher rpm (depends a lot on intake manifold and type of cams the car has).

74-80mm will probably net 5-8 wheel HP on a lightly modded E55 AMG. SC is totally different animal so you can't compare that to the NA 5.5Ls. You probably won't truly be able to unlock its potential until you get high performance headers, X-pipe, high flow filters and some other stuff as well.

Keep in mind though, usually throttle bodies require software upgrade b/c the amount of air entering the engine is significantly different and it can cause you to run a lean condition. The ECU might be able to adapt... it might not

it will of course sharpen up throttle response as well but b/c the cars are autos I don't know how much of that will really be able to be felt

I'd save this mod for last, but if you have aftermarket SC on your car or alot of mods, this one is for you.

john niki

any idea what the weight distribution front to rear is on a 1999 e320 and what it is on the 1999 e55? curb weights would be useful too, Thank you
gotogreece@gmail.com

E55 KEV

for 2002 E55

CURB WEIGHT:

3768 pounds