Taller gears will keep RPMs down when cruising on the highway which is what
that car is for. The higher stall speed of the torque converter makes up for
the possible loss of acceleration from a stop.
-Curt
From: Donald Snook via Mercedes <mercedes@okiebenz.com>
To: Mercedes Discussion List <mercedes@okiebenz.com>
Sent: Wednesday, February 18, 2015 10:43 AM
Subject: Re: [MBZ] interesting 123
I have always had trouble understanding rear end ratios. So, a lower number is
a taller gear and you get better fuel mileage at the cost of acceleration, but
you get higher top end speed? Is that right? Why would they want to reduce
acceleration on a diesel? Is it because it has the turbo to help with
acceleration and thus the trade off is mitigated?
Don Snook
-----Original Message-----
From: Mike Gildea [mailto:mikgi...@icloud.com]
Sent: Wednesday, February 18, 2015 8:11 AM
To: Donald Snook; Mercedes Discussion List
Subject: Re: [MBZ] interesting 123
Yes, the 85s are quicker off the line due to a high stall torque converter.
Turbo engages almost immediately. It has a 2.88:1 rear end ratio for better
fuel economy.
It has a A/C cut out when flooring the throttle for more passing power. Has
extra shift controls (vacuum) for smoother shifting.
Mike G 2 85 300TDs
> Isn't there some weird stuff about the 85 that is unique.
> Don Snook
> __
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