E60 AMG Vs E500 Trasmission

[195910]

Hi Guys,

A friend Is rebuilding an E500 Transmission (722.370) but wants to do all the AMG modifications.
Does anyone know exactly what parts were AMG modified/specific. EPC is a PITA.

Right Now I only got a Two:

1 - newer Valve modulator with W140 part number.
2 - Valve Body (Part number not available anymore).

TIA

 

[Christian_K]

I thought there weren't any "big" modifications. But after i was looking into my EPC it seems to be different....

Gearbox Part-Number E60AMG/S60AMG was "HWA1402700100"
Its valve-Body Partn-Number is: "HWA1292700115"
And the K1-Clutch Spring-Kit is listed: "A1262704477"
Aswell as the modulating-pressur modulator: "A1402700479"

Thats it. I assume the only difference to a normal 722.365/722.370 is the Valve-Body and the Modulator.

 

[samiam44]

I would guess the pressures are higher too. Different valve body probably means they changed passage hole sizes or added holes etc.

You'd have to look at the service specs, not just the EPC. Maybe it's more setup than hardparts.

Same Torque converter?

 

[Christian_K]

Yes same Torque converter. Sure the pressures are different, you can see that already at the modulating-pressure actuator, would be interesting to see if i use that actuator in a stock 500E gearbox.
I've had very good results adjusting the modulating-pressure (== shift speed) on my C36AMGs 4-Speed Auto (722.4xx), it now shifts almost as quick as a VW/AUDI DSG, especially at higher RPMs, without sacrificing to much comfort. But i have used a Dexron III Oil and a bottle of Lubegard ATF which softens the shifts a bit. Very good combination IMHO, will do the same on my 500E.

 

[195910]

Mae a number of phone calls:

1 - pressure plates (don't have part number)
2 - modulator
3 - Shalt Schein ?? .....Christian some help here

 

[gsxr]

Yeah, all they did was increase the operating pressures slightly across the board (via the different modulator) and possibly some minor valve body tweaks (possibly different springs for firmer shifts?). Nothing major. You can have the 722.3 500E transmission upgraded internally with extra clutch packs and/or the M120 internals if you need the additional strength. Talk to Jono at BlueRidgeMB in Atlanta, GA (USA)... he does this for customer cars...

 

[Christian_K]

1 - pressure plates (don't have part number)

Whats that?

3 - Shalt Schein ?? .....Christian some help here

You mean Schaltschieber? Never heard of "Schalt Schein".
Schaltschiebergehäuse is the valve body ;-)

 

[samiam44]

The first Renntech article, Hartmut says they simply increased the modulator pressure to handle the extra power. So, I would assume that's "ala AMG".
The extra clutches Jono said would be needed except for supercharged applications. I think he said to 500+ hp the stock stuff is fine.. but he has a local rebuilder whom re-lines the bands with improved material.
My car the only thing I can say negative is manual downshifting from high it is a little harsh. Upshifts are nice.. firm and quick when it's 6000+ rpm.

 

[195910]

Whats that?

Still trying to find out.

You mean Schaltschieber? Never heard of "Schalt Schein".
Schaltschiebergehäuse is the valve body ;-)

Sorry, still working on language skills

Now I got a call about an AMG stamped Valve Body out of a JDM Junkers Container. With this in hand (if true) we might be going somewhere..

Anyone have a technical document for AMG transmission mods... will trade you with AMG engine mods documents, LOL !

 

[Jimbo]

RennTECH use to put in the SL600 clutch packs in their .036 6 liter builds.

Whether AMG did this in-house for their 6 liter cars I do not know.

 

[500AMM]

I thought there weren't any "big" modifications. But after i was looking into my EPC it seems to be different....

Gearbox Part-Number E60AMG/S60AMG was "HWA1402700100"
Its valve-Body Partn-Number is: "HWA1292700115"
And the K1-Clutch Spring-Kit is listed: "A1262704477"
Aswell as the modulating-pressur modulator: "A1402700479"

Thats it. I assume the only difference to a normal 722.365/722.370 is the Valve-Body and the Modulator.

Dang! Christian - you just closed my loooongtime missing answere about the transmission in my SuperMerc!

This car was modified back in 1994 and I don't have much documentation on the 6.0 AMG conversion. The engine is stamped by AMG so that's OK, but the only document I have from AMG is a letter with an aluminium sticker attached, stamped with HWA 140 270 0100!! Which means they did the transmission too.

I don't have more technical info about the tranny except for my driving experience compared to my Limited. The main difference is that it shifts much harder and quicker both ways, especially upwards. It has also a bit strange behavior when slacking down, when the revs becomes low it sounds like it have a "intermediate gear"? (difficult to explain, sorry).

 

[fudgitive]

I'm intending to do the fluid and filter on the trans in my 6 litre next weekend. Would any stamps or identifying marks be visible without pulling the valve body?

 

[Christian_K]

Very very interesting to read about the shifts with the AMG Gearbox. Sounds just what my C36AMG gearbox does after tuning. Would you do some Videos of it maybe, Arnt?
Anyway, old topic about it from the 500ecstasy board:
http://www.500eboard.com/forums/showthread.php?20-quot-E60-quot-vacuum-modulator&highlight=modules
Nothing new though, just for completion.

 

[195910]

Hi Christian,

I was looking for that, thanks.

GSXR, any more info on these clutch packs, part number?
could we fit a complete S600 tranny and get on with it !?

 

[gsxr]

AFAIK the M120 clutch packs are the same. The modification is to machine the housing to fit a couple more clutch discs in there. The M120 internals (forget the technical term - drum something?) is stronger and that is another possible upgrade. Jono gets custom Kevlar (?) clutch discs for his high-perf builds.

You can't fit the M120 transmission because the bellhousing is different - it won't bolt up.

 

[195910]

Thanks for the Info GSXR.

 

[195910]

Got An E-mail from BRABUS:

There were no modifications to the transmission done by BRABUS on the 6.5L cars. It is the same unit as in the series production E500/E60 transmission.

So this leaves only the AMG differences.

 

[195910]

Update:

As Christian mentioned, the only parts different were the Valve body and the Vacuum modulator, the later is still available but the Valve body is not and is replaced by a standard part number.. from asking many contacts in Germany their were no internal differences in the AMG AT except for the AMG VB with things like stronger springs and the vacuum modulator.

Will keep checking with sources on VB variations.

 

[500AMM]

OK, that sounds good. I recently bought an E420 valve body from a board member so now I have both types to compare and find the differences. I'm sure the first gear start have to be a simple modification.