Peak horsepower is at about 4400 rpm, after which the torque will drop off substantially........so........it's unlikely that the engine will climb much above this level when pushing air at 100 mph or so.

As for the redline where the engine won't tolerate additional speed........that's more of an uncertainty. Brandon has run them over 5K without any consequences.

Speaking of Brandon, what's happened to him? I saw one of his old posts and he was not listed as being a "valid" member anymore.

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

He got mad at me and left.............

Hopefully I won't get in any trouble for saying this but he's still really active at the "other forum".

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Seth

1984 300D 225K
1985 300D Donor body
1985 300D Turbo 165K. Totaled. Donor Engine. It runs!!!
1980 300SD 311K My New Baby.
1979 BMW 633csi 62K+++? Dead odo

Nah.......no trouble at all. He's a moderator over there..........

I've never had my W123 to 100 yet....and in no rush to do it either....my W116 has been to somewhat over 100mph once...personally the consequences of getting caught weigh too heavy on me these days..or of something going wrong..I guess that comes with getting older...in my 20's I've hit 150+ on several vehicles....in my 40's the thrill is no longer there. Its been over 15 years since i've found out exactly what any of my vehicles could do if pushed...Thats an early sign of geezing isn't it?

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Brandon's gone? I was hoping to see another one of his 0-90mph straight down the mountain runs. 45 to 90 in .07 seconds, or whatever it was. That was pretty intertaining. The gravity assisted 0 to whatever runs are always fun to watch. It would have been nice to see him hook up to a dyno; I'm guessing 700-800 hp the way it pulled from 70-90.

Is that the kid that would put videos up of him trashing his SD, tearing up lawns and construction sites, and other mayhem? I wasn't to happy seeing that. Not too big on vandalism myself.

Mr. Carlton, I respect and value your input immensely, but I'm going to venture an opinion. I think it's rather unbecoming to accuse another forum member of the things you do, simply because it looks fishy. I may be missing out on something big time, but as a Moderator, people come and go, and I feel that it might be best if you were to just "watch the tide" as it were. Hope I didn't offend.

And out of curiosity, what the heck is this other site? Are we are war with em?

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B
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1983 300SD

Is there another MB oil forum I am missing out on?
Hints on getting there?

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82 300D....went to MB heaven
90 350 SDL....excercising con rods