I know these questions are played out, but will a 300sd sitll do 0-60 in 14 sec
on wvo fuel as well as petro diesel ??? my 85 is doing 19 sec times. Both fuel filters and banjo bolt are clean. no real smoke to talk about , I am puzzeled,
Valve adjustment? or is it wvo dose not give the same performance ??
thanks. Yea , Yea , I know you guys hate this subject , But A** hole Bush has the prices in N.Y. at 3.44 a gal ! when gas is 2.45 !!!!

Uh, all politics aside, your car will not be as fast with biodiesel, nor will it get as good mileage as it does with petrodiesel. It's usually a 5 to 10 percent decrease.

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"spreading a trail of obnoxious where ever we go"
1981 300sd w/ 341,500 miles

http://www.wecrash.com/pics/ddda_banner.gif

Even on WVO, a stock 300SD should have a 0-60 in the 13-15 second range.

If you are doing 19seconds, you have a problem.
Valve adjustment
Check timing chain stretch
Set injection pump timing
Adjust your ALDA
Clean your tank screen
Check the mercedes shop Wiki

Yes it will slow it down somewhat, but only by 5-10%, it should still do 0-60 in about 13-14secs on wvo. I'd check fuel filters....manifold to alda boost line and make sure the engine is in good tune (valves adjusted etc...)

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

I agree, WVO should only slow it down a smidge... start searching the alda banjo bolt threads...
John

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Thanks guys, but I still have a problem !

Well, then, it's time to locate a boost gauge and determine if the turbo is working properly. It needs to T into the ALDA line to see if you're getting sufficient boost.

You can also apply pressure to the ALDA and see if it holds, or if it bleeds slowly. Both are acceptable. If it leaks instantly, then you've got no fuel enrichment.

That doesn't seem to be the case anymore with the new ULSD. Mileage-wise, at least. I seem to be getting better mileage with bio now.

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Ralph

1985 300D Turbo, CA model
248,650 miles and counting...

Everything checked out fine on my car, valves, filters and stuff, and I was still running close to 20 second 0-60's. I got a boost controller and dropped it to the 16's.

Got a Garrett? Just get a manual boost controller

I just don't buy the "stock 300SD will do 14 second bit." Sorry guys. Maybe when new, at sea level, but these are just old stinky cars, and I'm sure they slow down with age, just like we do. I know you can get it there, but I'd be willing to bet that the majority of stock SD's are more around 18-20 seconds.

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B
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1983 300SD

12.70 seconds at sea level.

Not stock........2.88 diff installed!!

If I can do it, you can certainly do 13 seconds with a 3.21 axle in CO.

You need to run boost settings around 16 psi to achieve this. And, you might need to disable the overboost protection to allow it. At 5,000', your absolute pressure at 16 psi boost is 28.2 psi. At sea level, my absolute pressure at 13.5 psi boost is 28.2 psi.

So, get out there and crank up that boost controller. You won't hurt that engine unless you come down to sea level with it.

I'm not buying the "old stinky cars" line. The SD is close to 200K. It does benefit from new valves however.

I'm not saying it's not possible, I'm just saying I don't think they "should be running 14 seconds." I test drove quite a few of these before I bought mine, and they were all "stinky old cars."

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B
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1983 300SD

A typical SD will have 9.0 psi boost from the turbo. At sea level, that's 23.70 absolute. The vehicle might make a 14.5 second 0-60 time if everything was perfect and the IP can cam timing was spot on.

At 5000' you've got 21.20" absolute, so, a typical SD has no chance of 14.5 seconds. That's the same as 6 psi boost at sea level. The vehicle won't move.

That's why all of them seem so slow.

I can definitely feel a difference between sea level and Denver in my 617, mostly below 2000 rpm. Above 2000 rpm, the boost tends to compensate, unless you are running WOT.

What are you running for boost?

I suggest that you check your linkages, checking to insure that your throttle pedal corresponds to the IP. In other words, make sure that when you press the pedal, the IP is responding immediately or as close to immediate as you can get it. Have someone to press the pedal and you look to see if the linkages are allowing full travel of the IP throttle lever. I've found that sometimes the car won't go fast is because the IP throttle lever will go only about half way down or so, even though you may have the pedal all the way to the metal, therefore it can't go fast since it can't get the extra FUEL to make it go fast. My SD was like that, at first, until I got those linkages straight. It has lots of blow by, but will get up as you would expect a Mercedes Benz to get up. You have to assume that Mercedes didn't build a slug, not one that runs on the Autobahn and they were charging over $30,000.00 per car almost thirty years ago and sold millions of them. Keep searching, you'll find it.

BenzDiesel