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FOR SALE W124 300CE AMG, 1989, 232640km, auction, Kempele, FINLAND

Wow the conversion was made in Sweden back in 1989. The price was SEK 114.000 which in 2026 is $26.000.

Very cool indeed and really nice that all the documentation survived. I didn’t know we had a AMG centre in a small town an hours drive away, I’ll have to investigate that. ☺️
 
Does anyone have information about that M103 camshaft, what degrees and lifts AMG were using back in the days?

It's written in the description on that add that AMG camshaft were replaced due to worn by normal M103 cam which is a pity..
 
information about that M103 camshaft, what degrees and lifts
replaced due to worn by normal M103 cam
Hi,

I have searched for some data, and could only find the websites of two companies (that currently sell M103 camshafts / setting a few differences compared to what stock would have been) for tuning in Germany, but nothing there for AMG M103.6 camshaft specs.

Below I will post the URL - and also a translated guide for interpretation of abbreviation meaning on the attached table.
Alberto

===================

Mercedes 2,6 - 3,0 6-Zyl. 12V (M 103) / Sportnockenwelle | 12.043.002


Mercedes Performance Camshaft
6-cyl. 260–300 (M 103 engine) – hydraulic lifters

Application: Street

Duration: 264°
Lobe separation angle: 110°
Valve lift: 11.0 mm
Lift at TDC: 1.2 mm
Valve timing: 22/62 – 62/22 (IN-OP/IN-CL - EX-OP/EX-CL)

===================


www.imotecgmbh.de/LeistungsTeile/Nockenwellen/NW_Mercedes/nw_mercedes.html


Motor M103260 - 300
6 cyl.
€ 525,-
€ 595,- for types > 290°
INV° EXV° Separation°Valve-lift (mm)Lift@TDCValve springsApplicationID-code
256° 256° 112°11.00.9StockStreet1
260° 260° 112°11.01.1StockStreet2
264° 264° 110°11.01.3StockStreet3
280° 280° 110°11.81.6StockSport7
290° 290° 108°10.51.9StockRallye5
296° 296° 105°12.42.4StockRallye6


INV° - EHV° Spr° - Valve-lift - Lift@TDC - Springs - Application - ID-code

From the list above:


INV° + EHV°

These first two values in the table indicate the total opening angle of the a) intake valves and b) exhaust valves in crankshaft degrees, including the opening and closing ramps required to take up the valve lash. In other words, the stated total opening angle describes the actual opening of the respective valve.


Spr°

The lobe separation angle indicates the value between the intake centerline and the exhaust centerline in crankshaft degrees.


Lift / Valve Lift

The lift figures refer to the valve lift.


Lift@TDC

Lift at TDC refers to the overlap lift value at TDC (Top Dead Center). This value reflects the characteristics of each camshaft and is therefore an excellent tool for selecting the appropriate camshaft.

This value allows for the advance determination of the necessary clearance between the valve and the piston. A clearance of 1.8–2.0 mm should always be maintained here.

This figure is also important for the correct adjustment of the camshaft during installation. Consequently, this value is also listed on the camshaft data sheet included with every camshaft.


Springs

This entry refers to the type of valve springs required or recommended. The camshaft data sheet included with each camshaft also specifies the required maximum spring force and the corresponding installed spring height.


Application

Under "Application," we provide our general recommendation regarding the use of the specific camshaft. It indicates the general trend.

For a more detailed recommendation, please refer to the section "Description of Camshaft Profiles XY."


ID = Identification Code

This identification code appears on the order confirmation and the invoice; for identification purposes, it is also marked on the camshaft itself. This allows you to retrieve the relevant camshaft specifications from us at any time using this code


====================
 

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