AMGSC

I'm having an 82mm TB installed on my car by Vadim. He told me if there is enough demand that he would make a kit out of it which includes a custom intake system to match the much wider diameter.

Not sure if NA'd C55s would be interested but it would sure pair up well with Hooley's long-tube development. More air in, More air out.

Any interest? Stock TB is 74mm. Big difference in how the car will breathe.

Hercules86

Can u find out if it works on a s500 since i think the tb on both na cars are the same if im not wrong.

Pm me info im interested

AMGSC

I'll post pics when it's done. As of now only Renntech started selling the 82mm TB kit but the price is ridiculous. Mine cost less than half of that.

moosejaw

Agreed the price is insane
Is the 82mm the one they use on the V-12?

TruTaing

Just curious, is the opening into the intake manifold (where the tb mounts) on the NA m113s 82mm?

The opening on the m112 intake manifold is only 74mm, hence the recent movement for 74mm throttle bodies on NA m112s.

I figured the intake manifold would be similar between the NA m112s and m113s? This would also imply that the NA m113's ID on the MAF is larger than the 74mm ID on the NA m112 MAF also?

Tump43

I'm down for a for an 82mm throttle body for my NA C55. What happened to the promised enlarged throttle body for the C55 from AMS? If Vadim's got it everything's good!

AMGSC

Here is a pic of the C55 stock TB opening....

TruTaing

I guess my questions aren't so much for the sake of the C55 crowd. Ive always been curious as to what parts would be interchangeable with the NA m112.

I'm no pro at this, but how much sense does it make to make your throttle body larger than your MAF's ID?

How large IS the stock ID of the MAF on the C55 (m113)?

Ya posted at the same time I posted. I cant quite read that pic, what are the numbers on it? Thanks!

edit: wait... we know the stock tb is 74mm, how big is the ID of the MAF? Thanks again...

AMGSC

The reading is 82.xx. I can't read the third and fourth digits either. The stock opening looks to be 78mm so the MAF would match that unless Vadim replaces the MAF also. I'll give him a call to verify.

hooleyboy

How will an 82mm throttle body fit on the intake manifold? I just happen to have a few of these sitting around. My garage is turning into a Mercedes used parts depot.

AMS Performance

You can only go as large as the intake manifold opening itself. Some Mercedes have a much bigger opening on the intake manifold than the throttle body, others don't and are pretty much the same. You could always machine the opening but that's labor intensive and costly.

Furthermore, if you go too large on the opening, you have to then get special software specifically for that TB simply because the ECU can only adapt to so much new incoming air. All of these are key factors, furthermore the throttle bodies are one of the last bottlenecks on the AMGs and this should only be a mod of last resort (meaning you have put every other possible bolt on mod first and you have nothing left to do). If your car is lightly or even medium modded, it is simply not worth it (at least on NA applications).

just being honest.
~AMS~

AMGSC

Correct except I don't have the stock intake manifold. It's the Kleemann intake manifold which is much bigger. Even the plumbing for the intercooler is 1-1/2 inches which is why the CM30 is a restriction ini fluid flow.

That thing your holding looks vaguely familiar to what's sitting in my garage as well.

A good point though...as NA'd C55s would need further mods but Vadim says he wants to make this a kit if there is enough demand. I can measure it tomorrow and compare it to your measurements. I believe the opening is 78mm which would be fine for 78mm kit but not 82mm.

AMGSC

It's a good thing Vadim is a co-tenant and partnered with Powerchip. My car will definitely be custom dyno and road tuned. I would think that intake restriction is one of the first things you want to open up. If you can't inhale fully how can you exhale fully. btw...I thought you were working on a larger TB kit for C55s? Also still interested in a bigger AMS pulley to add more boost.

TruTaing

Ah, this is what I was getting at

To chime in on AMS's comments about needing retuning with larger (than usual) throttle bodies that require opening up the intake mani... I just figure if I am going to install a new intake manifold, why not spend the time/effort to open it up a bit to prepare for an even larger throttle body + retune since it would be one of my last mods anywhoo? BUT if the MAF's ID can not be increased, then this would be completely moot

Thanks for chiming in fellas.

AMGSC

You are right again. The stock MAF ID according to Vadim is 3 inches or 74mm but Vadim's kit will machine the housing out to 82mm and yes he knows how to increase the ID of the MAF itself without affecting the sensor's ability to function properly. I just called him.

Edit: Just measured it myself this morning and its 3 inches/74mm all right. Vadim can open her up easy though.

60n5pt1

After all this, what's the total benefit in performance ( HP, Torque increase, etc., cost effectiveness)

mb_c55amg_guy

AMGSC

You talking about the 82mm TB or the car? I think you mean the car right? It will be in the low 10 seconds 1/4 ET at over 130mph therefore will break the all-time MB dragtime record this June with just the SC. After the bore, stroke and TT, this will be into the 9's by Q4-2009.

60n5pt1

Alleluia!!
nuff said

splinter

MB’s switchable-length normally aspirated intake manifold is kinda slick.
No doubt accounts for a fair portion of their relatively broad torque curve.

Shouldn’t be too much effort bore its opening for a larger TB – mounting stud spacing permitting.

Snazzy shoe you’re wearing, hooleyboy.

Good luck with making that become a reality, Robert.

Trust you’ll continue to keep us updated with its progress.

NitrogenBalance

I think it is from the new 550 motors??

c32AMG-DTM

+1

I believe the TB comes off of the N/A 550's as well.

TruTaing

This is something I would love to hear more about. Would he be using a larger housing? A different MAF all together? If this happens, this would open up the smallest bottle neck in our (NA m112/m113) intake pre-intake manifold!

Please chime in Vadim

cldriver

Interested in new TB for my C55 (Kleemann SC). Want to see what it will do though and if there are any issues.

AMGSC

Next challenge is widen the MAF sensor.....