diesel driving style - Page 3 - PeachParts Mercedes-Benz Forum

DslBnz · #31 11-06-2003, 09:29 PM

Quote:

Originally posted by lietuviai
The tranny in my 300D had to be rebuilt at 108K by the original owner of my car at a cost of nearly $1500 and that was 11 years ago. I now have over 111K on the rebuild and I am trying to avoid the need for another rebuild while I own it. If this tranny goes out on me, that'll be the end of this car since I won't dump that kind of money into it.
As far as the GM Hydramatic transmission goes it is as good a transmission as anything they put in a MB with regular maintenance. Plus it can be rebuilt for less than half what it costs to rebuild a MB transmission. I had a '67 Cadillac that had 275K miles on the transmission when I had to rebuild it. I'd say that's not bad for a car that had a 325 HP V-8 and weighed nearly 6,000 LBS. It only ran me $450 to rebuild and install it 15 years ago.

I have about 300K miles on mine. Make sure your shifts are firm, and not "silky smooth". To be blunt, firmer transmissions last longer.

My father had 463K miles on his transmission, and right now the tranmission is being used on another 300D after he parked the car and decided to strip it. My father did mostly highway driving, but he was brutal on the car around town. The tranny outlived the ENGINE! About 40 % in town, 60% on highway. Of course in town was never "stop and go" every hundred yards, either.

redbaronph123 · #32 11-07-2003, 12:49 AM

my tranny had a rebuilt around 150,000KM... and i just had the car for 3 months at that time!!... spent around $850 for the rebuild, including a planetary gearset to replace the worn out part that i had. But this was because i simply didnt stop fully when shifting from R to D. Suddenly i heard a sound *thug*.. then.. gears have gone bye bye!.. eversince the rebuild, (running 7,000KM now on a rebuilt tranny), i drive it hard when i get the chance to.. hopefully it would last a long time before i have another rebuild.. otherwise.. bye bye 4speed matic.. hello to 5-speed matic...

(if i could find one here in the Philippines)

lietuviai · #33 11-07-2003, 01:13 PM

Quote:

Originally posted by DslBnz
I have about 300K miles on mine. Make sure your shifts are firm, and not "silky smooth". To be blunt, firmer transmissions last longer.

My shifts are firm, in fact the 1st to 2nd shift is the hardest. It seems to lurch into the next gear at that point especially when cold or in heavy traffic. It's a very uncomfortable shift. I've thought about adjusting the modulator to smooth it out but I've read it can make the tranny slip in other gears.
It's not broken so I won't mess with it.
I miss the Twin-Turbine Hydra-Matic of my '63 Riviera. You could never ever feel any of the shifts in that transmission. It had smooth awesome power all the way to cruising speed plus I could get 16 MPG from it!

toknow · #34 11-07-2003, 04:51 PM

please do not "shift" the subject to tranny problems

michakaveli · #35 11-07-2003, 06:06 PM

Should the OM606 engines also be run just as hard? Based upon research the OM606 in my '97 develops peak horsepower at redline. I've found that running between 70 - 90 with an average speed around 75 yields better fuel mileage than strictly city driving. When driving on the highway I tend to keep the RPM's at 3,000 exactly, no real purpose besides the needle pointing straight up

michakaveli · #36 11-07-2003, 07:56 PM

Should the OM606 engines also be run just as hard? Based upon research the OM606 in my '97 develops peak horsepower at redline. I've found that running between 70 - 90 with an average speed around 75 yields better fuel mileage than strictly city driving. When driving on the highway I tend to keep the RPM's at 3,000 exactly, no real purpose besides the needle pointing straight up

sjtymko · #37 11-07-2003, 09:31 PM

What is the redline rpm on an OM617A (turbo) engine? I have an aftermarket tach that has no "redline" marks.

Thanks,
Steve

#38 11-07-2003, 10:39 PM

Mine peggs at 5000 and levels off to 4800rpm.

#39 11-08-2003, 03:21 AM

I drive all my cars like I stole it, it's fun and healthy for the OM617!

axlechassis · #40 11-16-2003, 12:19 AM

I knew the 300D engine had some famous history.
here's the link

http://www.pistonheads.com/doc.asp?c=103&i=6730

#41 11-16-2003, 12:45 AM

I wonder if my TD could make 230hp

R Leo · #42 11-16-2003, 08:57 AM

Quote:

Originally posted by 82-300td
I wonder if my TD could make 230hp

Sure! Momentarily.

85drtysthbenz · #43 11-16-2003, 06:10 PM

Quote:

Originally posted by sjtymko
What is the redline rpm on an OM617A (turbo) engine? I have an aftermarket tach that has no "redline" marks.

Thanks,
Steve

i have an 85 300sd...my redline seems to be around 4500rpm at most,i dont think its ever gotten higher than that....my first gear changes at 3800rpm at full throttle....also,i dont think diesel engines come with redlines on the tachs...could be wrong,often am

DslBnz · #44 11-16-2003, 09:21 PM

I think you can do a search for the diesel redlines. But anyway I'll tell you.

The OM617 turbo redlines at around 5100 rpm. I wish Mercedes added redlines to the tachs of their old diesels, as it would be so much easier to tell. Don't worry, no matter how hard you push it in '2' or 'L', it shouldn't exceed its redline, as the fuel limit stop on the IP prevents it.

#45 11-16-2003, 11:15 PM

I recently took a video of my redline with my little digital camera (i still can't figure out how to post one here) and noticed my redline (no load) quickly peaks at 5500 and levels off to 5250. Loaded redline in L going up a steep hill is 5100. Would either these be too high?