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.

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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"

Disengage your parking brake.

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'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E

I think he means KPH not MPH.

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Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

Has to be.

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

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

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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

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

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

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-1983 VW Rabbit LS Diesel (5speed, VNT/Giles build)

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-

Having gone well over 130 in my 4.5, I find it hard to believe a newer MB chassis with an "Improved" V8 (debatable) could not SURPASS what I've done in my 4.5 - so 140+ should be as easily attainable for a 126 V8 as mine, right?

Definetly sounds like either you're way too rich, or your timing is way too late. If they had the front cover off, they could have set the distributor a tooth off and not been able to get the proper timing on it, and just left it. I dont know if late cam timings would produce that high RPM stutter on a 5.0 m117, I know on my 4.5, with late cam timings, it was sluggish at low RPMs but still had plenty of power in the higher ones. They might be too early if anything. But check your timing!

Sounds like they messed up your timing in the shop. I'm doing timing guides on m119 right now. Mechanic opened my timing chain cover and while he was putting new chain in there he skiped 2 teeth on crankshaft. Thank god I noticed it and said to him that I will do timing myself and will put cover back on myself. It is very easy to skip at least 1 tooth on crankshaft gear. Check your timing.
One more example of if you want to have something done right-do it yourself.
Good luck.

PS. That is some crazy video you got there posted. Car is fast.

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1999 ML430 Silver 135k ml
Smoked LED taillights, Alpine in-dash DVD player, 12" sub, Pioneer components, 2 amps, 4200k HIDs, ML55 headlights, 20" rims, mirror LED blinkers

SOLD. 1996 E320 145k ml. Burgundy

SOLD but miss it everyday 1992 500sel Black
Chime buzzer mod,Alpine CD/MP3 player with stock amp,Euro headlights,S600 grill,20" rims, BEST CAR EVER!

SOLD. 1990 300E White
187k ml,smoked tails,Euro headlights,17rims,Intake,12" sub in first aid kit,alarm/autostart,buzzer mod

haha i posted another one on benzworld about 7 months ago-- before they did the timing cover and with a bad transmission doing 150mph in the same streach....thats why it bugs me that i cant even reach that anymore....and in top of that a honda beat me ! disgrace!!!

i guess the car is fast for its good old days hehe i love my car !

i tried to do it myself but the chain jumped one tooth on me which freaked me out, being that im only 20 years old and dont want to mess up my car --with my luck ! haha i took it to my mechanic--he usually does a good job but this time im dissapointed....