S13 Drift Build

[Shanevasquez]

OK changing up the motor build a little bit. I want to have a KA that is reliable at 9000 RPM so having to use a different block and crank.

running 90mm pistons with set 9.5:1 compression (-2.8 cc) haveing a 34mm piston compression heights, after head is milled, running an 86mm crank (L20b) in a Z24 block with a deck height of 247.45, i can use a 170mm rod, as long as the head still has its 56cc compression chamber(like it should) I will still have a .44mm piston to deck height (Stock being .45) with a 1.98:1 rod ratio and will be 9.8:1 compression. Now I have been looking for numbers on the 10.5 but pretty sure running a 10.5:1 pistons I will be just under 11:1.

Building it like this I will have a crank with a LOT less vibration in it. Should have no issues at all reving up to 9000 and will be a 2.2 liter. Just have to find out about timing chain and pump.