| Mercedes Engine >> CYLINDER BLOCK SLEEVES FOR 84-89 4.2 & 5.0L ENGINES |
Cylinder Block Sleeves For
1984-99 Mercedes Benz 4.2 & 5.0L Engines
The AERA Technical Committee offers the following information regarding installation of aluminum sleeves in 1984-99 Mercedes Benz 4.2 & 5.0L, 116, 117 and 119 engines. This information should be used anytime cylinder bore over sizing is considered. This aluminum engine block requires a special honing procedure for the aluminum bores.
Mercedes Benz now offers an aluminum cylinder sleeve to the repair cylinder bores. These sleeves should only be installed and machined/honed by a machine shop that is capable of carrying out this kind of work to Mercedes-Benz specifications. Below is a chart showing the machining dimensions to install the new sleeves in the above-mentioned engines. It should also be noted that there are six sleeves for those engines and two outside diameters. After the sleeves are installed they can be sized to fit standard or + .5mm oversize pistons.
Machining Dimensions For Block
Basic Bore for Aluminum Sleeve 95.500-95.535 mm 100.000-100.035 mm
Basic Bore for Sleeve Collar 97.500-=97.535 mm 402.000-102.035 mm
Counterbore Depth for Sleeve 4.400-4.450 mm 4.400-4.450 mm
The AERA Technical Committee
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