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Scott Clarke Scott Clarke is offline
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Join Date: Apr 2002
Location: Eugene, Oregon
Posts: 1,115
Note that the 2.4 motors (70.4mm stroke) made 10HP more than the 2.2 (66mm stroke) motors, and due to changes to the pistons had LESS compression. In your case, given the 90mm pistons, large ports, and low CR, I would think that the difference in power due to increasing the stroke might amount to something on the order of 15 HP. Also, I'd think that some careful shopping could net a crank and rods for a little less than $1000. Remember that along with the HP will be added bottom end torque that should really be useful for a street driven car. It seems like the obvious way to pump up the motor to me.
'70 911E short stroke 2.5 MFI. Sold
'56 Cliff May Prefab
Old 04-14-2005, 01:12 PM
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