Nippon Racing Part# 13020-PCT-000These pistons are designed for High Compression All Motor Engines with a Compression ratio of 10.92:1 to 12.5:1
-B16A Block and Head 10.95:1
-B18A/B Block and Head 11.40:1
-B18C1 Block and Head 12.40:1
-B18C1 Block and B18c5/B16A Head 12.10:1
-B18A/B Block with B18C1 Head 12.64:1
Nippon Racing Part# P73-00. 81mm Press Fit Set with Rings, for OEM Rods.
COMPRESSION RATIOS ARE AS FOLLOWS:
81MM B18A/B W/PR3 HEAD 11.8:1
81M B18A/B W/P72 HEAD 12:1
81MM B18C W/PR3 HEAD 11.4:1
81MM B18C W/P72 HEAD 11.7:1
ADD .02 FOR EVERY .50MM IN INCREASED DIAMETER
Nippon Racing Part# 13011-P30-000. 81mm Press Fit Set with Rings, for OEM Rods.
COMPRESSION RATIOS ARE AS FOLLOWS:B16A BLOCK AND HEAD 10.5:1B18A/B BLOCK W/ PR3 HEAD 12:1B18A/B BLOCK W /P72 HEAD 12.5:1B18C BLOCK W/ PR3 HEAD 11.5:1B18C BLOCK W P72 HEAD 11.8:1
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