Mercedes W111 with AMG engine by Mechatronik

A classic Mercedes with AMG V8 engine
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The Mechatronik company near Stuttgart restores the Mercedes W111 models and install an AMG V8 engine.

Mercedes built the W111 series coupes and convertibles between 1961 and 1971. The most powerful versions were the 280 SE 3.5 Coupe and Convertible which had a 3.5-liter V8 engine and 200 HP under the hood.

Located only 30 km from Stuttgart, Mechatronik company  modifies Mercedes SL W113 models which it sells under the name M-SL and W111 which it sells under the name M-Coupe and M-Cabrio. Mechatronik completely restores these models and installs AMG V8 engines as well as modern active safety systems.

Construction from scratch

Most customers come with the original model because nowadays it is not a problem to find a W111 on the market. Mechatronik practically reconstructs the model from scratch and brings it in a similar stage to a new model. All special requests from the customer, such as removing the bumper or installing additional headlights, are already being considered at this early stage. Mechatronic also installs safety systems such as ABS and ASR that were not available at the time of manufacture of this model. Then mount the three-point seat belts and headrests for the front seats.

AMG V8 engine with 5.0 or 5.5 liter

In addition to the restoration operation which is laborious and requires a lot of documentation work to fully comply with the original classic model, the most spectacular operation is the installation of the V8 AMG engine. Customers can choose between two V8 engines: 5.0 liters with 306 HP and 460 Nm or 5.5 liters with 360 HP and 510 Nm (both from the M113 series). This engine was available until 2010 in the SLK 55 AMG. The 5-liter engine version accelerates from 0 to 100 km / h in 6.5 seconds and the 5.5-liter engine in 6.0 seconds while the top speed is in both cases 220 km/h.

Mercedes W111 Mechatronik

AMG V8 engines are not new but are bought on the open market with a few kilometers on board after which Mechatronik completely overhauls them. The engine is mated to a 5-speed automatic transmission (NAG1 series) that changes smoothly and is very reliable.

Due to the much higher engine power compared to the original model, Mechatronik has adapted the drive train according to the new requirements. Thus, the suspension is equipped with sport springs and shock absorbers from KW and a lockable differential was mounted on the rear axle.

The braking system has also been modernized. At the front axle was taken the braking system from W126 with internal ventilated discs and brake calipers with two pistons while at the rear axle was kept the braking system from the original model. The brake calipers are painted in black but customers can order any other color.

Mechatronik has been offering the M-Coupe and M-Cabrio for some time, but the 5.5-liter V8 engine is a new addition. Mechatronik also now offers more optional equipment.

Mechatronik mentions that its models can be serviced in any Mercedes service and does not require the intervention of a specialist in classic models.

Prices for these exclusive models are not low. The M-Coupe 500 starts at 316,000 euros and the M-Coupe 550 costs 331,000 euros. In the case of the M-Cabrio, the prices start at 362,000 euros for the 5-liter engine version and 380,000 euros for the 5.5-liter one.
This price does not include the original vehicle.