M42club.com - Home of the BMW E30/E36 318i/iS
PAPER OR PLASTIC => WTB/WTT => Topic started by: CMyers79 on November 20, 2016, 11:44:58 PM
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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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Picked up a set. Thanks Chris!
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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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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... :)