[W126 Coupe] Opinion on ignition parts & dust cover

[Camran Nassiri]

Bellamy- On a 90 560SEC imported for California market, would you use
W9DC or W7DC?  Just curious.
Thanks,
Camran 90 560SEC, 63 220SEb

-----Original Message-----
From: Mister McGoo [mailto:eelploot at hotmail.com] 
Sent: Thursday, September 15, 2005 10:37 AM
To: mbcoupes at mbcoupes.com
Subject: RE: [W126 Coupe] Opinion on ignition parts & dust cover


Tom;

Myself, I'd try W9DC's.

I went through this "hotter plug" issue two years ago.  The engine is a
380 
Euro with 250,000Km.  Then I went back to the recommended original
(W7DC).  
The theory is fine in a controlled environment, but unless you can
control 
everything including the quality of the gasoline you pump, the results
can 
be inconclusive.

In Europe they have designed the N. American engines and systems for our

inconsistant quality, low octane fuel.

For those who are really enthusiastic, it may be fun to experiment with 
plugs; you'll do no damage as long as the physical dimensions are right,
and 
if you actually believe you are gaining, that's terrific.

For most people it doesn't apply.

-Bellamy




>From: "Tom Oelsner" <toelsner at mindspring.com>
>Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
>To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
>Subject: RE: [W126 Coupe] Opinion on ignition parts & dust cover
>Date: Thu, 15 Sep 2005 09:49:42 -0700
>
>ok Richard.  I looked at the articles.  Now my question remains, what 
>plug should I try that is hotter and what should I gap it to?  I am in 
>Northern California.  Nighttime temps are already down in the low 50s.

>Last week I was in Morro Bay and it was in the upper 40s. Tom


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