[DBMB]

I have been doing more work to the 560 and have discovered something that I have not made sense of yet. The car has all of the correct inof for the 822 motor option (HV on block, 822 sticker, Tri y's, and so on) The EZL on the car appears to be incorrect. It may have been replaced at some point? It says 8 EZL which I just assumed was right but it is 4 per side. It must work because it does but what is the effect of the wrong EZL and second what do i need to do as well as where can I find the correct EZL?

 

[Roland500SEL]

Don´t worry, everything is ok! The 8 pin EZL is only used for V8 from 9/88 up to 8/91.

 

[DBMB]

Don´t worry, everything is ok! The 8 pin EZL is only used for V8 from 9/88 up to 8/91.

Thanks. Early on during the discovery of this car many people pointed to the 8 pin EZL as an item on this car. I had checked everything but. Then today while doing wires, cap, and so on I looked and said !!!! But only because of lack of knowledge.

 

[81126]

Hmm. Take a look at the pictures in my post above...

 

[bondavi]

My late '86 ECE motor has a 8-pin ezl with it as well. You should look at the engine stamping on the bellhousing between the driver's side block and tranny mating surface.

How did the 4 pin EZL connectors look, did they look like converted 8-pin connectors?

 

[DBMB]

My late '86 ECE motor has a 8-pin ezl with it as well. You should look at the engine stamping on the bellhousing between the driver's side block and tranny mating surface.

How did the 4 pin EZL connectors look, did they look like converted 8-pin connectors?

What am I looking for on the stamping. I thought was just looking for the HV stamp but if more would love to know.

It did not appear to be converted in any fashion. Seemed like a stock wire harness at first glance. Will look a little closer.

 

[hents99]

Your engine has knock/detonation sensors? If yes you need 8-pin EZL. If not then fits 4-pin EZL

I have both (560 220kW) EZL`s in my garage at the moment.

 

[bondavi]

So you saw the HV stamping following the engine serial, DBMB? Did you get the motor's serial as well - if so what was it?

hents99, I believe you got a 8-pin EZL from a Gen2 euro 500 high compression motor from a member here. The question lies on the

The early 1986 Gen2 500SEL that I found at a junkyard a couple years ago w/ high compression 5.0 engine and tri-Y's had a 4-pin EZL. The later '89 gen2 500SE I saw later had euro logs, BUT had knock sensors and a 8 pin EZL.

The 560 ECE motor....still in question.

So the conundrum persists...

 

[DBMB]

EZL wiring looks stock to me the numbers from what I can see on the motor read 117 968 12 018005 HV

 

[Roland500SEL]

Once again...

The 8 pin EZL is only used for V8 from 9/88 up to 8/91 on engines with knock sensors. Everything else found is handmade and not original!

The 560 SE/SEL/SEC from 9/85 to 9/86 was the only engine called ECE

DBMBs car is absolutely original

 

[bondavi]

So in other words, the 1986 ECE motors came w/o knock sensors?

Sounds like I scored a free working 'spare' 8-pin for my '90 Euro, cool! It has the same part #'s like the original from the car (0227400701, 0065455432)

The 4-pin EZL I gave mclare off the early HV Euro '86 (tri-y car) has got to be the proper one for these early 86-87 ECE/HV motors, then...

 

[hents99]

I have 560 (220kW / 300hp) EZL`s because I have been buying only these engines .
Here in Estonia the most wanted EZL is 2-gen high compression 500, it`s with 8-pin EZL - I wish I had one of these I have some 4-pin 500 EZL`s (2-gen earlier 9.0 CR and 1-gen 9.2 CR)
My 420SEL has also 8-pin EZL (MY 1991).

In Estonia most popular V8 equipped W126 is late 2-gen (from 1987).

Here some electronic parts list I have (I made this list yesterday - so there is not much parts yet, I`m updating it step by step)
Elbe Engineering - Spare parts

And originally tri-y`s were only with 560 (220kW / 300hp) engines.

Sorry for my stupidity but I don`t really know these abbreviations like ECE. We never use these combinations around here.

So you saw the HV stamping following the engine serial, DBMB? Did you get the motor's serial as well - if so what was it?

hents99, I believe you got a 8-pin EZL from a Gen2 euro 500 high compression motor from a member here. The question lies on the

The early 1986 Gen2 500SEL that I found at a junkyard a couple years ago w/ high compression 5.0 engine and tri-Y's had a 4-pin EZL. The later '89 gen2 500SE I saw later had euro logs, BUT had knock sensors and a 8 pin EZL.

The 560 ECE motor....still in question.

So the conundrum persists...

 

[Roland500SEL]

And originally tri-y`s were only with 560 (220kW / 300hp) engines.

They also came with early 500´s, i got such a car (Gen II 500 SEL 9/85)

 

[bondavi]

quoting 560300 here:

From Sean Rohe German SEC Club

From October 1985 until August 1987:
KAT 560: 242hp (9,0:1) / cat conv
RÜF 560: 272hp (9,0:1) / no cat conv, but convertible
ECE 560: 300hp (10,0:1) / not convertible to cat conv (today it can be done with aftermarket parts, but not in 1985-87)

From September 1987 until end of production:
KAT 560: 279hp (10,0:1) / cat conv / knock sensors
RÜF 560: 300hp (10,0:1) / no cat conv, but convertible / knock sensors
ECE 560: deleted

The most obvious differences between ECE and RÜF/KAT are the knock sensors (only on the 1987-91 RÜF/KAT)and the camshafts. HV means "Hoch verdichtet" - high compression , while NV means "Niedrig verdichtet" - low compression, for lower fuel quality


from my earlier thread:

http://www.benzworld.org/forums/w126-s-se-sec-sel-sd/1484035-got-complete-5-6-ece-300hp.html

Sorry for my stupidity but I don`t really know these abbreviations like ECE. We never use these combinations around here.

ECE's were known as the "early high compression, unrestricted 560 engines for the European market.

If this info is correct, then sounds like the 8-pin EZL is a late gen2 exclusivity...?

 

[Roland500SEL]

ECE's were known as the "early high compression, unrestricted 560 engines for the European market.

If this info is correct, then sounds like the 8-pin EZL is a late gen2 exclusivity...?

Yes, sir! :thumbsup:

 

[DBMB]

Yes, sir! :thumbsup:

Ahh!! something put to bed that will no doubt be asked again and debated over.

Thanks guys.

 

[KRH]

I have 560 (220kW / 300hp) EZL`s because I have been buying only these engines .
Here in Estonia the most wanted EZL is 2-gen high compression 500, it`s with 8-pin EZL - I wish I had one of these I have some 4-pin 500 EZL`s (2-gen earlier 9.0 CR and 1-gen 9.2 CR)
My 420SEL has also 8-pin EZL (MY 1991).

In Estonia most popular V8 equipped W126 is late 2-gen (from 1987).

Here some electronic parts list I have (I made this list yesterday - so there is not much parts yet, I`m updating it step by step)
Elbe Engineering - Spare parts

And originally tri-y`s were only with 560 (220kW / 300hp) engines.

Sorry for my stupidity but I don`t really know these abbreviations like ECE. We never use these combinations around here.

Hents99, Roland500SEL & Bondavi,
I have been reading this thread with much interest is it pricked my ears up.

My Euro 87 500SEC came from Hong Kong with a build date of Feb87.
The engine was swapped out during its life some time in Hong Kong for a later 500SEL 500 engine built in Sept87.
(i had checked with Mercedes data base and they advised the engine came out of a Hong Kong delivered Sept build 87SEL.

Today checked the engine number properly on the block and it reads-
117965 22 016756HV I checked the EZL and its 4pins each plug.
However i have a spare cable/plug sitting next to the EZLand the cable runs back to the engine mounts (knock sensors) but the plug (smaller round head with 4 pins i think) has nothing to plug into.

I have noticed this engine has a lot of poke for a 500, (its got tri-y's & euro logs) so i only now realise its a Euro 500 high compression.
I gather in the engine swap perhaps the original EZL was kept?
now iam worried iam running this without knock sensors connected.

I did have it tuned properly at a Merc service shop and watched as he set the AFR ratio spot on as it was wired up to their tuning machine.
I never hear any pinging under heavy throttle ( i only use BP Ultimate 98octane fuel).

I guess now its not using the correct EZL for the engine
Can one of you guys please enlighten me on the EZL/knock sensor situation as i will have to get it sorted.
Thanks

 

[bondavi]

The big connectors on your EZL harness - did it look like they were modified or swapped out - the 3-pin connector for the knock sensors was for the 8-pin. Though, I think you have the correct 4-pin setup. I saw a early '86 500SEL Euro (gen2)and it had the .965 HV engine, tri-y's and a 4-pin EZL with 2 EZL dials, one near the brake booster, and one in the passenger kick panel.

What part # does your EZL show?

Diagram of a 8-pin EZL:

 

[mclare]

David, any chance I can buy a spare 8 pin EZL if you have one? I'll PM you the details...

 

[KRH]

Ok David i checked the EZL again
The smaller round plug from the engine mounts is 3 pins (nothing to plug into)
The EZL reads
Part #003 545 0132
Siemens 5WK6 140
D116265 / EZ116265
It has the 2 x 4 pins connectors at the botom
Top left is where the green wire plugs in
Top right is a rectangle looking thing with a vacuum line plugged into it.

The EZL dial in the engine bay reads 015 545 0728 (set on "S")

I will have to get the car out of the garage tonight to check inside the cabin for possibly another EZL dial and also check the ECU part#