SLR vs 55K Exhaust Valve - Page 2

Feb 25, 2009 | 03:53 PM

#26

Jakpro1

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From: Salt Lake City (but not Morm)

2003 E55 & 2014 GL550

Wait wait wait....Dyno. You have 3.06 gears???

How the heck did you do that?

You have an E55 right?

I tried and tried and aside from trying the SLR rear in my car, couldn't figure it out. I have 2.82's from an SL55.

Just curious.

This is awesome....there are crazy AMG modders like me all over the world.

Feb 25, 2009 | 04:44 PM

#27

dyno

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From: Italy

cls 55 or FIAT Coupe T20v-6speed

[QUOTE=msheredy;3375741]

Quote:

Originally Posted by Yacht Master

sodium filled/QUOTE]

Could also be Inconel perhaps?

no, its sodium for sure
.. it's not rare even in much cheaper cars
(I think my son's Opel Astra turbo has the same thing)

Mercedes put it also in the latest 350 engine

should check if our stock valves also have it or not

Feb 25, 2009 | 04:50 PM

#28

dyno

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From: Italy

cls 55 or FIAT Coupe T20v-6speed

Quote:

Originally Posted by Jakpro1

Wait wait wait....Dyno. You have 3.06 gears???

How the heck did you do that?

You have an E55 right?

...

its a long story
somewhere I already posted it ..

should try now if it works also from an electronical point ov view .. I have my newly modded TCU her ein front of me
I even do not dare to ...

ps: IT'S a CLS55 !!

pps: I like the name that YOU, as its Padrino, gave to AMG LSD !

Last edited by dyno; Feb 25, 2009 at 04:59 PM.

Feb 25, 2009 | 07:43 PM

#29

Ohbev

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Joined: Dec 2008

Posts: 248

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E55 AMG Kompressor

Great work to find out all that.

But if your going to do head work y dont you just get race valves made to any size you want

Feb 25, 2009 | 11:24 PM

#30

dyno

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From: Italy

cls 55 or FIAT Coupe T20v-6speed

Quote:

Originally Posted by Ohbev

Great work to find out all that.

But if your going to do head work y dont you just get race valves made to any size you want

imho, the question for porting is this:

- bigger intake, we don't need
- bigger exhaust means higher valve and head temp, less velocity ... Somebody already did their homework... maybe we can POLISH

as women say ... bigger is not always better

Feb 26, 2009 | 01:19 PM

#31

ChicagoX

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Joined: Jul 2006

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From: In a box

W211 E55

Quote:

Originally Posted by dyno

I am also of the opinion that a mild port on the exhaust and a simple gasket match on the intake would yield the best results.

Feb 26, 2009 | 03:06 PM

#32

dyno

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From: Italy

cls 55 or FIAT Coupe T20v-6speed

Quote:

Originally Posted by splinter

Scouring the EPC and part bins for the next slick piece of hardware.
Nice work, dyno.

Aren’t they both?

indeed its strange enough: seems that C32 is sodium filled
as I found here (last 2 rows of this interesting description)
http://www.c32life.com/stats.htm

... ours are not
I didn't search a lot but couldn't easily find the same info for our 55K

so I had a more attentive look at my new valves: SLR clearly shows it has been worked both on bottom and on top to fill it with that metallic sodium, while there are no signs on our 55K valve;

further, SLR shows a thicker filling material had been carried over it ( translating directly from italian to english it should be called "nitruration process" and maybe also some reinforcing "stellite" (Co-Cr-W-C alloy) has beed carried over its base

this picture showing also the thermal impact distribution on the valve, should help:

Feb 26, 2009 | 03:25 PM

#33

dyno

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From: Italy

cls 55 or FIAT Coupe T20v-6speed

Quote:

Originally Posted by ChicagoX

I am also of the opinion that a mild port on the exhaust and a simple gasket match on the intake would yield the best results.

hard to tell .. I just red something more technical on this subject and I only understand how ignorant I am and hom many variables are concerned ..
as far as I understand a half millimeter difference in sections can play a big role ..

sorry I m not going to touch it
sad, because I don't know if I will ever get a similar deep passion with another car as I feel with this one
statistically, it happens to me one time each 10 year

OHBEV: ..same reasoning.. had it be done on SLR I could have tried to copy ..but can't afford to do the homework myself .. even if after looking at those many companies here able to custom produce all these valves, cams .. I go crazy

were it a 722GT maybe I would try

btw.. sounds good

http://amgmarket.com/amg/2008/12/vid...e-nurburgring/

Last edited by dyno; Feb 26, 2009 at 03:30 PM.