MAHLE Motorsport announces its 2023 Porsche Application Guide. The guide offers a complete listing of all Porsche-specific piston kits and offered applications, and features user-friendly sections of Water-Cooled and Air-Cooled listings sub-divided based on engine size and application, the company says.
MAHLE adds it machine-forged Porsche pistons have lightweight slipper skirts to reduce friction and are dual-coated with Phosphate and MAHLE’s proprietary GRAFAL skirt coating to reduce drag, wear, and noise. Piston kits include performance ring sets made from durable materials that are designed to provide consistent contact with the cylinders resulting in increased sealing and oil control.
The cylinders included in the air-cooled kits are machined to OEM tolerances and designed to increase performance and longevity. Some applications are available as either a slip-in or machine-in design. The slip-in cylinders are simply a larger internal bore replacement, according to MAHLE Motorsport. The machine-in cylinders require the engine cases to be machined to a larger bore diameter to accept their larger spigot diameter. The larger spigot diameter is preferable for extreme applications as with highly boosted turbo or competition-use engines. The guide also includes final assembly tech tips and ring gap recommendations.