Spacers can also be installed to reduce bearing compression caused by the trucks'arched structure and improve mobility.
2.
American wartime intelligence claimed the first Schweinfurt Regensburg mission in August had reduced bearing production by 34 % but had suffered heavy losses.
3.
To the immediate rear of the chrome-plated piston head is a notched ring which provides a reduced bearing surface and alleviates excess gas build-up.
4.
Production tooling at the factory was scrapped and sold in 2000, to make way for the production of a new four cylinder OHC engine, the remaining old stock of 3.4 L Engines started to be sold as assembled crate engines, these engines had some differences from the 2.5 3.0 and 3.1 L Dagenham built engines such as : Ford Cologne 2.8 / 2.9 V6 forged connecting rods, German made pistons with moly coating, . 250 " smaller crank journals which reduced bearing speed, more aggressive camshaft timing and higher lift, larger 43mm inlet valves, shaft mounted rockers from Ford's Cologne 2.8 / 2.9 V6 engine, unique cylinder head castings with extra oil galleries, solid pushrods with no oiling holes, unique exhaust manifold bolt pattern due to the head castings also being unique to the 3.4 litre engine and an improved inlet manifold with larger runners and an improved plenum chamber.
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