My 1979 240D topped out at about 90 mph as well on a flat road.
I'm sure it was the governor, as the motor still seemed to have more power.
--------------------------------------------
On Tue, 10/4/16, Nate vwnate1@yahoo.com [diesel_mercedes] <diesel_mercedes@yahoogroups.com> wrote:
Subject: [diesel_mercedes] 240D Top Speed ?
To: "Lorraine Payette" <lorrainepayette.ccasa@yahoo.ca>, "David Miller" <d.david.miller@gmail.com>, "Raul L.A.P.D. Supply Juarez" <n4243@lapd.lacity.org>, "Dwayne Bryan" <dwayne.bryan@lacity.org>, "Yahoogroups" <126diesel@yahoogroups.com>, "Yahoogroups" <diesel_mercedes@yahoogroups.com>, "Tony Flores" <pack4u2@comcast.net>, "Tam Hall" <audiolaw@aol.com>
Cc: "Nate Hall" <rsrnate63@hotmail.com>, "Kate" <akatis@aol.com>, "Michelle Wright" <floundah@gmail.com>, "Leslie 2 Simpson" <leslielsimpson@comcast.net>, "Epifano TorrezJr" <epifanio.torrez.jr@lacity.org>, "Lew Sheen" <lew.sheen@comcast.net>
Received: Tuesday, October 4, 2016, 5:12 PM
10.4.16
So
;
In
trying to fully clean the cooling system I have taken to
running this car (1982 240D automatic Sedan, 358,000 +
miles, bad valve in # 1 cylinder) with the throttle pinned
and the heater turned to max hot (fan off) on the freeway
when I can find it open .
After
a couple miles the temperature begins to creep up and almost
reaches 100* C ~ at this point whatever silt or crud is in
the wee corners of the water jacket begins to break loose
and mix with the distilled water I'm running .
After
a 15 minute run yesterday the water remained clear so I
*thought* I was all done and ready to install pre mixed
coolant but after tearing up the Harbor freeway @ full tilt
boogie this morning I popped the radiator cap to find foamy
stuff, meaning there's still a little bit of cleaner or
something in there ~
This
afternoon I drained it (block and radiator) and refilled it
with distilled water and hit the I-1210 freeway , pinned the
throttle and waited .
Much
to my surprise it easily pinned the speedometer (@ 82 per
GPS) and continued to accelerate ~ this was on a slight down
hill grade and eventually I guess it hit the governor in the
injection pump as it flat wouldn't go faster than 89 MPH
.
That's
plenty fast for a 50 HP 4 cylinder naturally aspirated
Diesel pushing a 4,700 pound car through a slushbox tranny
.
I
also eyballed the toe in , I'd noticed the car "
hunting " a little bit and it was toed out .
Now
it drives O.K. but the steering wheel is slightly off set to
the right so I must needs re adjust the tire rods to center
it .
-Nate
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