[W126 Coupe] New Engine

[calvin young]

Yes Kirk, he did lower the compression ratio.  I did ask not ask how, but 
probably by changing out the pistons.  The car has more than enough power 
for the northern Virginia area with all the horrendous traffic as I changed 
out the rear end on advice from Satish.  Really cannot get much past 80 
without getting yourself into trouble.

Dan, regarding the difficulty of getting good high octane fuel, I did not 
discuss this with him as I was satisfied already with the acceleration I was 
getting with the higher ratio rear.  He may have been referring to the "corn 
starch" they are using.  The fuel they produce from sugar cane in Brazil s 
much better than the ethanol we are forced to use here in the US.

Cal

Message: 3
Date: Tue, 9 Nov 2010 17:23:26 -0800
From: kirk erichsen <krerichsen at hotmail.com>
Subject: Re: [W126 Coupe] New Engine
To: <mbcoupes at mbcoupes.com>, <dan at landiss.com>
Message-ID: <SNT126-W393C2A75C05B29FC380687DB310 at phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"


I would suspect it's use of commonly available US/Japan/Oz spec camshafts 
(less aggressive) and lower compression pistons. 8.0:1 up to about 8:8:1 are 
your C/Rs outside of the lands of the Autobahn. You can further retard 
ignition with those switchable EZLs, the combo of the two (if you can get 
one) would given fairly wide latitude on acceptable fuel octane ratings 
without pinging. Not sure which route the chap referenced took, but I'll bet 
limited to cams/piston selection.

-K



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Kirk R. Erichsen
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