The K20A2/K20Z1 (02-04 RSX-S and 05-06 RSX-S) have the best flowing heads of the bunch. The K24A2 is next best (02-08 I think TSX).
The bottom ends of the K20A2/K20Z1 are the best for higher RPMs. The K24A2 can spin pretty high as well with an oil pump upgrade.
Most guys are taking one of the K24 bottom ends and putting the K20A2/K20Z1 heads on them for the best off the shelf OEM 2.4 liter combination.
The bottom ends of the K20A2/K20Z1 are the best for higher RPMs. The K24A2 can spin pretty high as well with an oil pump upgrade.
Most guys are taking one of the K24 bottom ends and putting the K20A2/K20Z1 heads on them for the best off the shelf OEM 2.4 liter combination.
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