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DISCUSSION => Engine + Driveline => Topic started by: flyingbrickperformance on August 03, 2011, 08:27:04 AM

Title: M44 Deck Height
Post by: flyingbrickperformance on August 03, 2011, 08:27:04 AM

Looking into changing internals and need to confirm that the deck height of the M44 is the same as the M42 - any help is appreciated.

Title: M44 Deck Height
Post by: dsm2002 on August 04, 2011, 02:11:04 AM

I'd say the deck height of both is 212mm.

The crown heights according to the Mahle catalogue is:

M42 = 31.65mm
M44 = 30.4mm

Difference is 1.25mm which happens to be 1/2 the stroke difference.

Putting it another way:

212mm - 140mm - (81mm/2) - 31.65mm = -0.15mm (i.e. piston top above deck)
212mm - 140mm - (83.5mm/2) - 30.4mm = -0.15mm (i.e. piston top above deck)

Title: M44 Deck Height
Post by: Leo_328i on December 26, 2011, 08:49:06 AM

Where can you find the Mahle Piston catalogue?

Title: M44 Deck Height
Post by: dsm2002 on December 27, 2011, 07:02:14 AM

Mahle online catalogue (http://www.motorenteile.mahle.com/eLIZA/mahle/query/engine/byParams)