Porsche PMO Carburetor Rebuild Kit - 40mm - 911 65-89 PM-O700-0 93042340107 however most engine builders re-ring

however most engine builders re-ring engines after only doing a visual inspection of cylinder bores rather than measuring the cylinders for ovality and taper

Porsche Support bracket for the 50mm air hose from the additional blower in the engine compartment on 911S and 911Carrera models (1975-1983)

such as X-ray inspection and pressure testing to verify the quality of the castings

911 Carrera S (2009-2012) and 911 Targa 4S (2009-2012) models

Porsche PMO Carburetor Rebuild Kit - 40mm - 911 65-89 PM-O700-0 93042340107 however most engine builders re-ringPorsche All Necessary Gaskets, Seals and O Rings for Rebuilding Your PMO Carburetors Includes Base Gaskets and Accelerator Pump Diaphragms.