BMW 435i F32/F82 340hp N55B30 2013-2016

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BMW 435i F32/F82 340hp N55B30 2013-2016

BMW 435i F32/F82 340hp N55B30 2013-2016

BMW 435i F32/F82 340hp N55B30 2013-2016 

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BMW 435i F32/F82 340hp N55B30 2013-2016

The 340hp 435i F32/F82 uses the same N55B30 as the 306hp car, and therefore the same performance stock. This page approaches it from the top end, where holding a raised boost pressure is decided.

The head gasket comes as a Cometic MLX in 85.0mm bore, in 0.81, 1.12, 1.32 and 1.52mm thickness, or as an Athena O-ring in 86.0mm bore at 1.50mm: four thicknesses to recover a compression ratio after skimming.

Then come Ferrea stainless valves with three keeper grooves and Supertech with a single groove, the Supertech exhaust valve being sodium-filled Inconel, plus performance springs, stem seals and collets in 5mm and 6mm. The Dinan air filter completes the intake.