L28 Bore & Stroke Combinations

This information was presented by Jim Wolf at a Z Club of San Diego Meeting, taken from material published copywrite material under Nissan Moters Co..

BORE AND STROKE COMBINATIONS FOR L28 ENGINES
HEAD #VOL. C.C.INT VALV. EX VALV.EXH. PORTPROD. DATE
E31 42.4 42 33 square ex10/69-7/71
E88 44.7 42 33 square ex9/71-7/72
N33 47.8 42 33 square ex8/72-7/73
N33/P5047.8 42 35 square ex8/73-8/74
N42 44.6 44 35 square ex9/74-7/77
N47 44.6 44 35 round ex 8/77-3/78
P81 44.6 44 35 round ex 2/79-6/80
P79 53.6 44 35 round ex 7/80-
P90 53.6 44 35 square ex12/80-7/82Turbo
P99 53.6 44 35 square ex8/82-Turbo Hyd

HEAD GASKET MEASUREMENTS
H/GASKET HEIGHT DIA. C.C.PART #
L28 STD1.25 88 7.6011044-P7911
HKS METAL1 91 6.5011044-91MM1
HKS METAL2 91 13.0111044-91MM2

PISTON WEIGHTS AND MEASUREMENTS
PISTON DIA MM.PIN HEIGHT DISH C.C. PART #
KA24E STD.cut .589 33.5 0.00 12010-40F10
KA24E +1.00 cut .590 33.5 0.00 12010-40F73
Z24 STD. cut .5 89 33.5 13.00 12010-83W01
Z24 +1.00 cut .5 90 33.5 13.00 12010-83W03
Z22S STD. 87 35.0 9.33 12010-06W11
Z22S + 1.00 88 35.0 9.33 12010-06W13

PRACTICAL PISTON / ROD / CRANK COMBINATIONS
NO.PISTON RODCRANKPIST/DECK +/-CC VOL+/-SIZE C.C.s
#1KA24E STD.cut .5 L24LD28 0.13 -0.80 3098
#2KA24E +1.00 cut .5L24LD28 0.13 -0.83 3168
#3Z24 STD. cut .5 L24LD28 0.13 -0.80 3098
#4Z24 +1.00 cut .5 L24LD28 0.13 -0.83 3168
#5Z22S STD. L28LD28 -1.02 6.06 2960
#6Z22S +1.00 L28LD28 -1.02 6.20 3028
#7KA24E STD L24L28 -1.37 8.50 2949
#8KA24E +1.00 L24L28 -1.37 8.71 3015

CONNECTING ROD MEASUREMENTS
RODLENGTHPART # CRANKSTROKEPART # BLOCKHEIGHT
L24133.0012100-N0102 L28 79 12201-P3000SV L28 207.87
L28130.3512100-A8703 LD28 83 12201-V0790

COMPRESSION RATIO USING HKS 1.MM HEAD GASKET FOR ABOVE COMBINATIONS
HEAD
#1 #2 #3 #4 #5 #6 #7 #8
E31
11.73 11.98 9.45 9.65 8.67 8.83 9.56 9.72
E88
11.24 11.48 9.14 9.33 8.41 8.56 9.23 9.39
N33
10.65 10.87 8.76 8.94 8.08 8.23 8.83 8.97
P50
10.65 10.87 8.76 8.94 8.08 8.23 8.83 8.97
N42
11.26 11.50 9.16 9.34 8.42 8.57 9.25 9.40
N47
11.26 11.50 9.16 9.34 8.42 8.57 9.25 9.40
P81
11.26 11.50 9.16 9.34 8.42 8.57 9.25 9.40
P79
9.71 9.91 8.14 8.31 7.53 7.67 8.16 8.30
P90
9.71 9.91 8.14 8.31 7.53 7.67 8.16 8.30
P99
9.71 9.91 8.14 8.31 7.53 7.67 8.16 8.30