MitsuStyle - View Single Post - 86.5mm E85 series 1400HD Pistons, 6 Bolt 2.4 Crank, 92 AWD 5 Speed Trans and Tcase

punxnotdead185 · 03-10-2016

The bore size increases compression, they are only 10.5:1 in an 85mm bore engine, on their website they show it goes up to 10.8:1 at 86mm so 86.5mm comes out to 11:1 with an 88mm crank, with a 100mm crank it goes up to over 12:1 because their is more air to compress into the same volume.

03-10-2016	#3
punxnotdead185 Join Date: Jun 2010 Location: Oakdale, MN Drives: 95 AWD Mirage Coupe with AIDS Posts: 230	Re: 86.5mm E85 series 1400HD Pistons, 6 Bolt 2.4 Crank, 92 AWD 5 Speed Trans and Tcas The bore size increases compression, they are only 10.5:1 in an 85mm bore engine, on their website they show it goes up to 10.8:1 at 86mm so 86.5mm comes out to 11:1 with an 88mm crank, with a 100mm crank it goes up to over 12:1 because their is more air to compress into the same volume.