I seem to recall a past post in which someone claimed some portion of the clatter was coming from the IP.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Jim needs a diesel


I can hear an om61x from a mile away... I just know that sound soo well

My understanding is the sound is closely related to the "pinging" noise you sometimes get on a gasoline motor. On a gas motor it is usually caused by
a hot spot in the combustion chamber in which it actually ignites the fuel which is called pre-ignition. At roughly at the same time the spark from a spark plug fires and that fuel ignites. The resulting dual explosions meet head on with each other and smack each other into oblivion! And then create that pinging noise. You can ruin a gas combustion chamber if the pinging is severe enough. Running a higher octane will slow down the combustion and prevent pre-ignition.

On a diesel, I understand it is the same way. There is a little bit of pre-ignition going on, the the resulting multiple explosions are causing that distinct clatter. A diesel is also built to withstand that type of combustion.


Yeah Nik, you got that Manly exhaust on your car that belts out a great sound and lots of black smoke!


I have to agree with that. Some of the pulsing sound comes from that.

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1983 123.133 California
- GreaseCar Veg System

some might.. I disassembled a 617 IP. There is a portion off the cam that is within the governor assembly that has this big(well.. to me they were) fly weights.. Those were the RPM limiting devices I bet...

kinda like the ole brass ball fly weights on steam engines

yeah, burning witches and other heathens, pagans, wiccans, etc. can really work up a guy's appetite.

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1983 300D classic white 196,xxx
2007 toyota yaris lb
2007 nissan versa (wife's)
2001 nissan frontier
2006 bmw r1150gs
2001 ducati monster 900
2003 zr7s
2007 klr650

Nice comparison. When I heard the 300SD at school the first couple times I turned around expecting to see my uncle's JD 2020 showing up. Exact same sound...

__________________


~Michael S.~
Past cars:

1986 300SDL
1987 300SDL
1982 240D
1982 300SD


Current:

1987 300SDL

I always liked the sound of a Mercedes Diesel way before we ever owned
one. They just Purr, and have that sweet sound. there can be one some
where in a parking lot and I can detect it.

I always liked the moan of a Detroit Diesel, that is a sound you won`t
ever forget. I use to drive a dump truck with a 6V53, needed ear plugs
when riding in it. those Detroits are real screamers.
There was one that had the 8V92 with a 13 speed, load that thing down
and nothing would stop it. but they were quieter.

It`s amazing how all the different diesel engines have their own sound.

I tell people, when your gasser sounds like mine, you better fix it.

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Sorry for the quick derailment....

Busted... love the Blue Ridge Parkway pics. That is a trip I want to do this spring and again in fall.

__________________
NC Benz
Fuquay-Varina, NC
1979 300D
1983 300D Turbo 260,000 Miles
1984 300D Turbo 345,000 Miles (sons car)
OBK #31
1998 Ford Expedition 5.4l (fer Haulin'!) 145,000
1973 19' SeaRay with 115 Mercury TOWER OF POWER!
Club Car Golf Cart 36V
Ex toys:
1967 Mustang 289 (First Car)
Fiat 124TC
1975 Honda CVCC
1980 Audi 5000 Turbo

LOL!

__________________
1985 CA 300D Turbo , 213K mi

The combustion process takes place over a much shorter period of time rather than a long burn such as in a gas engine. Since the pressure happens all at once, or as a pressure spike, it sounds like a hammer hitting metal.

Jim B,

You've actually heard some?
'Nice idea.
'Can you hear all the jokesters,"Jim your car is calling you".

I never heard one. But then again, why not?

I actually saw an ad for GUNSHOT ringtones!

I think it came up on an Off topic discussion that was about guns or something.!!

Just amazing. I thought I had heard everything. Clearly, I had not!!

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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...

1995 E 420, 170k "The Red Plum" (sold)

2015 BMW 535i xdrive awd Stage 1 DINAN, 6k, <----364 hp

1967 Mercury Cougar, 49k

2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive (sold)