Forrest Gump 9

Thank you. I did mine about a week ago and I only switch the 1 and 4. The car throw the ESP code, I put the stock TB back on and will try to figure it out later. You've just save me the time. I'll try that tonite.

shardul

iTrader: (1)

switch 5 and 6 also.

shardul

iTrader: (1)

[QUOTE=Ali_E55;4098386]great job,

i want to ask you about the small filter. what it is for ?

QUOTE]

it is for the PCV, since the new 82mm TB didnot have a inlet for the PCV tubes.

Forrest Gump 9

Hehe, I have a feeling there gonna be some fast E55 emerging this summer.

theeddie

i have the TB just wondering where i can pick up the snout and other pieces?

shardul

iTrader: (1)

s/c inlet you can purchase it from the dealership. the flange is custom made.

skratch77

nice work guys!!! That looks like the same tb I had.With the car fully warmed up and in drive what is the tps % at idle?

Are you guys using a e55 tps sensor or the 550?

shardul

iTrader: (1)

tps % is 3.2%
he is using a bosch 82mm tb, not a mb tb

dyno

that inlet appears exactly the one for the 80mm tb, therefore it's an amg part.
BUT it can be seen an additional spacer, so this means the 82mm tb does not fit without it into the 80mm inlet.

sorry, but is it so difficult to post a clearer picture of how that tb matches with the 80mm inlet and/or the required spacer ?
personally I feel annoyed of this 82 tb mistery, especially following all those issues that only recently emerged about its correct functioning ...

shardul

iTrader: (1)

exactly

AMGPilot

Which is why you get the correct Supercharger Snout for the 82mm TB. It's what I have and it's an AMG part.....

shardul

iTrader: (1)

can you post the part number please.

mdweiss

I 2nd for a part number on the snout, or whats it off?

dyno

oh, me too have it and part # is not a secret

look here



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but, again, why then that spacer is really needed .. show the mismatch, please !
and, most important, what issues with idle ?finally: if you had the 78/80mm tb previously, what 's the difference ?

THANKS

vietjdmboi

thanks for the PN. just got a price for one and its not bad at all.

dyno

if you will ever put the 82tb hope you 'll come back with an unbiased report ...(nothing else added, except the TB !)

personally, I am not a believer in any sensible gain over the 78/80 tb, at least till there will be the restriction in the intake/Y-pipe .
then, if you add to the hassle of removing half engine the issues arising with idle stability/tuning ..

blackbenzz

I'm interested to know what car that came off of. So you are saying the 82mm TB bolts to this inlet without modification and has an inside diameter of 82mm? That's odd since the 82mm TB is from a 550 motor which is NA and doesn't have a sc snout. Are you sure you aren't talking about an 80mm TB?

By the way MB uses Bosch for their TB's so I don't understand what "he is using a Bosch TB not a MB TB" really means. Audi and Porsche also used Bosch 82mm TB's but the MB TB doesn't require repinning.

dyno

it was not me to say that, but Amgpilot ..
what i was saying is the snout shown by the OP is the same as mine 80tb snout.
on the other hand, it is obvious that it is much better than an 74mm tb snout that is much more resctricted .. without mentioning the frankenstein finish, if using that ..
I also added that from pics of the OP it is also clear that he, nonetheless, uses a spacer, meaning it is not a plug n play, as evidently a mismatching still exist ..

this 82mm tb seems a joke .. the same as it was a few years ago with the 80mm tb story: it is about one year different people are talking (YOU included, iirc) and posting "reports" on this 82TB install .. but none of them showed the only important issue concenring the matching/mismatching issue with the snout and the required spacer ..

even more desolating the fact that only few days ago came to light the "idle and tuning issue" when using that tb .. and that different members went back reinstalling their original tb

ps: TBs are made by Delphi .. don't know if it belongs to bosch

blackbenzz

I'm sorry, I dont understand what you mean by this. What did I do? I posted that you can port a stock sc inlet and have an adapter made and welded to it so that the 82mm TB can bolt to the TB. Mismatching with the snout and required spacer? Not sure what you mean.

shardul

iTrader: (1)

by this weekend we will have before and after number. they you all can decide if this mod is worth it or not.

dyno

ok, Ahmad .. I got the idea you dealt a lot with this 82 tb ..

I will now play a bit with OP's pics:


the 82mm tb seems to have bolts positioned orthogonally, as it was for our stock 74mm tb:

see bolts 2 and 4 compared to bolt 1


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unfortunately, the 74mm Tb' snout is not a good option because its too small .. and you would have to strongly port it to get it enough unrestricted .. but the end result would hardly be nice.

on the other hand, the 80mm tb' snout is good enough, restriction wise ..
BUT its bolts are NOT orthogonally positioned:

see here the same bolts 2 and 4 compared to bolt 1 !!



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SOLUTION ??

.. seems to me there's an easy one: just make a, say, 5mm thick spacer, by simply copying the 82tb's gasket

In case bolts 1 and 4 are, as it appears, compatible for the 82mm Tb AND the 80mm snout, the "metal spacer/gasket" will need only 2 more holes (2* and 3*): therefore 6 holes instead of 4.
- the new 82mm Tb will be bolted normally at bolts 1 and 4
- positions 2 and 3 of the TB will be bolted to the spacer, while the spacer will be bolted directly to the snout by mean of the 2 additional bolts 2* and
3*



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I would even do it, if I was sure there would not be any idle/tuning issue AND if result would be sensible enough
... but would prefer to go into this only for something more .. tangible

blackbenzz

Please explain why the 74mm inlet is any different than the 80mm inlet besides the opening size.

Also, what size is the opening on the "80mm" inlet? Remember, you are going to a 82mm TB to flow more air. If the inlet is only 78mm, what's the point of bolting an 82mm TB to it? In essence your plan is no different than whats been done before, just running a thinner spacer and not porting the inlet. What is so novel about your theory? Please elaborate

dyno

it s no theory ... just what I see now that I look at it more attentively. I guess it is exactly what has been done by the OP ...

in effect, it is based on the FACT that the 80mm Tb snout is MUCH better flowing than the 74mm Tb' snout: if you ever had them both at hand, you should know it. in particular, it is the 2neck2 of the smaller one that's really small .. iirc it is LESS than 80 mm along its whole neck lenght.

the 80mm tb is, first thing, really 80mm diameter at the base and at the edge (maybe it is truly only 78mm inside, wher ethe butterfly is fitted, but I never measured it there) ... therefore, I guess the real difference AT the OUTSIDE are 2 mmm ... that's 1 only mm all around !

this is a quite small difference that can be smoothed out easily in the snout, to avoid any "step" in the flow.

further, for those who already have the 80tb installed, maybe it would not be needed to disassemble the whole SC ... in any case, it would be better to have the snout at hand, but don't remember if it can be removed while leaving the SC in place ..

blackbenzz

Again, besides the inlet diameter what makes the 80mm inlet superior to the 74mm inlet? If you port out the 74mm inlet to 82mm, why would the 80mm inlet flow more? And you are incorrect about the neck diameter being less than 80mm.

dyno

just found this pic of the 74mm snout and an 82mm tb fitted into it:



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you can see what I call the "neck": so, just compare this to other pics of the 80mm snout and you will find that it indeed has no neck .. simply because it is LARGER.

besides that, I think you'll agree that it doesn't allow a really nice install ..


then, in the end, difference is that the 74mm snout needs to be "machine-ported", while the 80mm snout need to be only "smoothed out" 1mm all around .. and this can be done by hands.

.. maybe there will be somebody offering ready made SPACERS and gasket soon - LOL