w126 top speed ! HELP
 

Hey guys, i had my car in the shop for like forever they were putthing the front cover of the engine on...anyways..ever since i got it back.. it takes FOREVER to gain speed after like 120mph...before it use to clim pretty fast...at the same strecth i use to hit 155mph, now im having trouble hiting more then 130 mph !! my brother who was behind me said the car was throwing alot of black smoke compare to before...any ideas guys ?

p.s. i noticed that the last 1,000 rpm its slow in every gear and it dosent reach 6k if i hold it in gear...running to rich or something ?

Mine used to get up to just under 185mph, but fell back to around 170mph after I changed spark plugs. I had been using Autolites, but switch to the recommended Bosch plugs. That was a bad idea. I reinstalled the Autolites and gapped them at .065 and managed to get back to top speeds of right at 185mph.

Disengage your parking brake.

I think he means KPH not MPH.

I couldn't do that speed with this if I wanted to.

if i add a large turbo to my 240d will i be able to go that fast? if i install a k & n filter and one of those large ended exhaust fallic thingise?

tom w

Has to be.

115 mph would be about the limit for the six cylinder.

you dont want an K&N filter on a diesel.

Wow wow i didnt know their was so much hating ! I'm being serious here people...

http://media.putfile.com/part-1-

http://media.putfile.com/part-2-

Model? Engine? Why was the work done?

No W126 that I'm aware of will do 155 mph (are you in Canda -- kph?)

Peter

If the problem started after you had work done, why not take it back?

How big is that crack in your windsheild?

Glad to know someone is holding a video camera while driving 120 mph:rolleyes:

Where do you live?

500SE euro setup... 117.963 1980...i have another windshield that im going to put on it soon...its been cracked like that since 1990...so im not worried...save your comments about the preaching about speeding etc, thanks.

it only reaches 130mph......Have you tried shifting in high gear?:eek: :eek:

The early 500SE/SEL's were indeed very fast. I rode shotgun in a '81 500 SEC in '84 heading west from Munich to Stuggart and we easily cruised at an indicated 250 kph. The owner said at the time that his car was produced before MB changed the rear axle ratio. From my technical data book I note that the ratio was changed in Sept. '81 from 2.82 to 2.24, a very meaningful difference. While the earlier car would pull redline in top gear the later one would not. We owned a Euro 500SEL that was produced in 1982 that my wife drove as a replacement for a very rusty Euro 450SEL. She frequently complained to me that the 450 was much quicker than her 500 was and peladed with me to resurrect the 450 (she was a very fast driver). Also, keep in mind that the later 500SE/SEL had a taller rear axle ratio than the 560SE/SEL did (2.47). In short, I believe that egutie's 500 could run 155 before the shop work. One question for egutie, was the front cover removed to replace chain rail guides? If so, did they mistime one or more camshafts and/or ignition timing (Euro ignition timing is 16 deg. +/- 3 BTDC with vacuum connected at idle)? Mark

Oh yeah I remember you form MBworld. Racing in traffic, blowing up your engine...with kerosene in it.:rolleyes:

Did they change the timing chain or just re seal the front cover? If they changed the chain they probably got the timing off a bit.