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.
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