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Author Topic: WTB M44 pistons  (Read 3494 times)

CMyers79

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WTB M44 pistons
« on: November 20, 2016, 11:44:58 PM »
Hi, I'm building an M42 to stuff into a 2002.  I want to bore it out to accept 85mm M44 pistons because I can't find any overbore pistons for the M42 except forged ones for $750 and OEM Mahles for $1100.  There aren't any complete M44 sets on eBay at the moment, just scrapyards trying to gouge people for a single piston + rod.  I don't need or want the rods, and I'm looking to spend about $200 + shipping at the most.  Anyone have a set laying around?
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CMyers79

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Re: WTB M44 pistons
« Reply #1 on: November 29, 2016, 12:15:33 PM »
Picked up a set.  Thanks Chris!
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benz-tech

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Re: WTB M44 pistons
« Reply #2 on: February 11, 2017, 08:53:15 PM »
The deck height is lower on an M44 piston. You will not be able to use them with an M42 crank since it will drastically lower the compression ratio.
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Pi is apparently the multiplier for your engine swap budget as well.

CMyers79

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Re: WTB M44 pistons
« Reply #3 on: February 12, 2017, 12:20:14 AM »
Yeah, the quench is off by about .043 inches.  We're going to have the machine shop zero deck the block and use a .040 MLS gasket, and the heads will get milled a bit as well..  I'm more worried about the quench height than compression because we're also considering adding an Eaton supercharger from a Mercedes C class.  Then just need to figure out the offset for the cam gears.  Maybe I should start a build thread...   :)
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