[W126 Coupe] spark plugs

[Jonathan]

Hello Bill,

Yes, All M116/117's need the same looking after in regards to the timing 
chain/tensioner/guide rails/oil line clips.  Aside from getting the job 
done it is of Utmost importance to use Genuine guides as well as a 
Genuine tensioner. 

15/40 is good, you may find 20/50 even better.  For off the shelf oil 
that still meets the needs of our engines (re, zinc/phosphate etc..) 
I've been using Valvoline Racing 20/50.

Shrouding is what happens when you have Large amounts of deposits 
forming on your spark plugs..to the point where they cover the electrode 
and form an actual cover/shroud over the tip.

Jonathan

Bill Reford wrote:

> Hi Jonathan,

>  

> We just did a timing chain (172,00KM)(108,000 Miles) and she will 

> be re-assembled shortly, I was interested to see what shape the 

> chain/tensioner etc, was in.(fear of the unknown)

>  

> The chain showed some wear (minor) the rest of it showed very little 

> wear (pleasently surprised, as per the lists dialogue over the years) 

> (replaced everything anyway),  I believe that the car has had an easy 

> life, judging by the engine internals, and by the history that I got 

> when I imported the car from Germany in 2000 and the service by me 

> since then.

>  

> The plugs look good after 15,000 km (since the last change) (light 

> brown and with no oil deposits appearing)

>  

> Question ... I have a 1990 560 SEL (US) as well, with similar mileage, 

> (milage is accurate) with regular service by MB since new. Does the 

> timing chain and their components wear the same as on a 1995 euro 500 

> ? should I assume that the chain needs attention ? 

>  

> I use Castrol 15W40 and change every 5000 KM. (in the winter they 

> are both garage queens)

>  

> What is shrouding ??

>  

> Bill

>

>     ----- Original Message -----

>     *From:* Jonathan <mailto:jhodgman at gmail.com>

>     *To:* Mercedes Coupes Mailing Lists <mailto:mbcoupes at mbcoupes.com>

>     *Sent:* Saturday, March 01, 2008 5:50 PM

>     *Subject:* Re: [W126 Coupe] spark plugs

>

>     Hello Bill,

>

>     I would just keep an eye on your plugs..If when you inspect them

>     you are starting to see deposits form then I'd make the switch to

>     the BP5's.  Also, if it gets Really bad close the gap down to

>     about .028-.030.   That will help prevent shrouding etc.

>

>     What weight oil are you running?  How many k's since your last oil

>     change?

>

>     Jonathan

>

>     Bill Reford wrote:

>>     Jonathan,

>>      

>>     At what mileage or kilometer reading should one choose NGK BP5ES

>>     (for tired valve guides) ?? My 85 500 SEC euro is starting to

>>     puff smoke (1 or 2 seconds) at startup, when sitting overnight only.

>>      

>>     Bill 

>>

>>         ----- Original Message -----

>>         *From:* Jonathan Hodgman <mailto:jhodgman at gmail.com>

>>         *To:* Mercedes Coupes Mailing Lists

>>         <mailto:mbcoupes at mbcoupes.com>

>>         *Sent:* Thursday, February 28, 2008 5:41 PM

>>         *Subject:* Re: [W126 Coupe] spark plugs

>>

>>

>>         NGk Bp6ES or 5 ES if you valve guides are getting tired..

>>

>>

>>         Jonathna

>>

>>         On Thu, Feb 28, 2008 at 5:38 PM, Gary <garysalas at yahoo.com

>>         <mailto:garysalas at yahoo.com>> wrote:

>>

>>             my store no longer sells the bosch so what's another plug? 

>>

>>             The MB Coupes Website!

>>             W126 SEC Mailing List

>>             Postings remain property of MB Coupes, L.L.C.

>>

>>

>>

>>

>>         -- 

>>         Blue Ridge Mercedes/AMG East

>>         Offering Enthusiast Service, Restoration and Modification.

>>         Providing quality parts to discriminating customers in all

>>         parts of the world.

>>         Located in the Greater Atlanta area.

>>         http://www.blueridgemb.com

>>         404 805 1357

>>

>>         1996 S600 Euro "Scharnhorst"

>>         1991 560 SEC Full Euro ECE

>>         1991 560 SEC 226Hp/271ft/lbs:)

>>         1989 560 SEC AMG (N.Amer 250/295)

>>         1986 560 SEL AMG 6.0L 32V

>>         1980 280 SE Euro

>>         1978 300D TMU

>>         1987 560 SEL 162K Midnight Blue on Gray RIP:(

>>         2006 Z4 3.0Si M spec 6sp

>>         ------------------------------------------------------------------------

>>         The MB Coupes Website!

>>         W126 SEC Mailing List

>>         Postings remain property of MB Coupes, L.L.C.

>>

>>     ------------------------------------------------------------------------

>>

>>     The MB Coupes Website!

>>     W126 SEC Mailing List

>>     Postings remain property of MB Coupes, L.L.C.

>

>

>     -- 

>     Blue Ridge Mercedes

>     Offering Enthusiast Service, Restoration and Modification.

>     Providing quality parts to discriminating customers in all parts of the world.

>     Located in the Greater Atlanta area.

>     http://www.blueridgemb.com

>     *Updates weekly*

>

>     1996 S600 Euro "Scharnhorst"

>     1991 560 SEC Euro ECE Conv. (for sale)

>     1991 560 SEC 226Hp/271ft/lbs (TT conversion IP)

>     1989 560 SEC Euro ECE *Parts*

>     1988 300 TE

>     1989 560 SEC AMG (Mech.lifter/radical cam conv.)

>     1987 AMG Hammer 6.0L 32V

>     1986 560 SEL 6.0L 32V AMG

>     1980 280 SE Euro

>     2006 Z4 3.0Si M-Spec

>         

>

>     ------------------------------------------------------------------------

>     The MB Coupes Website!

>     W126 SEC Mailing List

>     Postings remain property of MB Coupes, L.L.C.

>

> ------------------------------------------------------------------------

>

> The MB Coupes Website!

> W126 SEC Mailing List

> Postings remain property of MB Coupes, L.L.C.



-- 
Blue Ridge Mercedes
Offering Enthusiast Service, Restoration and Modification.
Providing quality parts to discriminating customers in all parts of the world.
Located in the Greater Atlanta area.
http://www.blueridgemb.com
*Updates weekly*

1996 S600 Euro "Scharnhorst"
1991 560 SEC Euro ECE Conv. (for sale)
1991 560 SEC 226Hp/271ft/lbs (TT conversion IP)
1989 560 SEC Euro ECE *Parts*
1988 300 TE
1989 560 SEC AMG (Mech.lifter/radical cam conv.)
1987 AMG Hammer 6.0L 32V
1986 560 SEL 6.0L 32V AMG
1980 280 SE Euro
2006 Z4 3.0Si M-Spec

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