E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

engine mods. for a 300e

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Old Aug 25, 2003 | 05:02 AM
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Question engine mods. for a 300e

ok, my first post....... i tried this at a different site, and i got eaten alive...... anyway
im just tryin to find out what kind of engine mods. i can (theoretically) get done to a 300e (one from 87- 93)

now my friend has a '92 300ce and he put some kind of chip in it to give it more HP i guess. what i wanna know, is can i do that, is there a supercharger or turbo that i can put on it, if so what would the specs be? all im tryin to find out are my options. my buddy said something about being able to slap a slk supercharger onto a 300e, is that so?

any info or help or links would be appreciated. thanx
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Old Aug 25, 2003 | 12:20 PM
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Enzo, my Benzo
A chip is useless since our cars (including your buddies 300CE ) are electromechanical fuel injection...you may as well throw a bag of Doritos under the hood..

As for the Super or Turbo, they will be big money, be prepared to spend 5-10K to get it to work properly and be relatively safe for your engine.
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Old Aug 25, 2003 | 05:35 PM
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Doritos!?!!? I thought it was Cheetos! No wonder I didn't feel the kick of the Slick50....
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Old Aug 25, 2003 | 07:31 PM
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LOL, yeah cause Slick 50 is supposed to be used in conunction with the VORTEX air filter tubo, netting 550HP at the wheels!! heh

Sorry to hijack...back on topic, i struggled with the lack of power in my 300E as well and came to grips that for the same amount of money it will take to make it fast, I can buy a 500E.
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Old Aug 26, 2003 | 01:51 AM
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before i start on any modifications.... can anyone tell me or link me to somewhere that can tell me what the specs are on an '87-89 and 90-93 300E...i heard that as of '90, they made some changes to the engine, id just like to know what the stock specs are. thanx

any suggestions to what i could/should/can do to it performance wise?

Last edited by FlyingGuy; Aug 26, 2003 at 02:23 AM.
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Old Aug 26, 2003 | 10:52 AM
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FlyingGuy,

The M103 (specifically 103.983) motor in all 300E's from 1986-1993 is essentially the same with little modifications made from year to year. It makes about 177HP, has a 9:1 compression ratio and is VERY difficult to tune outside of its normal operating range.

Your buddy's car is a CE, so it has the M104 engine which is entirely different in its engine management approach. Adding/changing a chip on this engine could result in some gain in HP.

For the M103, as stated, there is nothing that will add appreciable HP without a bucket of cash (5-10k). So most of us either enjoy them for what they are, or take the 10k and the 300E and buy something faster, like a 400E or 500E. I lust after the 500E myself, after having a 500SL (129), I think of how awesome it must be to have a 124 with 325 stock ponies scrubbing rubber off my rims.

-D
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Old Aug 28, 2003 | 03:00 PM
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87 300 E
The CE didnt come with m104 until 93.
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Old Aug 28, 2003 | 04:59 PM
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Soldsep, that is not correct, the CE had the 24 valve m104 engine much before 93, it was the same engine that was in the 300SL and 300E 24.
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Old Aug 28, 2003 | 05:34 PM
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I Concur Zorro, here's the poop:

300CE:
1988-1989 US 124.050 had the M103.983 motor (12V, SOHC, 177hp)
1990-1992 US 124.051 had the M104.980 motor (3.0L, 24V, DOHC, 225hp)
1993-1995 US 124.052 had the M104.992 motor (3.2L, 24V, DOHC, 217hp)

-D
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Old Aug 28, 2003 | 10:09 PM
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87 300 E
i learn something new. Maybe i was thinkng about the hood change. when did they change the hood style of the cars?
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Old Aug 29, 2003 | 12:19 PM
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The new hood started on cars built 7/93 and after, so very late '93 to '95. Oh yeah and as for the engines, the 104.992 started late in the '93 model year too.
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