ABCDEFGHIJKLMNOPQRSTUVWXYZAAABACAFAGAHAIAJAKALAMANAOAPAQAR
1
ManufacturerEngineVariantRPM
Displacement
Cylinders
Configuration
BoreStroke
Rod length
Rod ratio
Pin diameter
Pin dia vs rod ratio
RPM
Max piston acceleration (g)
Mean piston speed (m/s)
Pin dia vs accel
Piston weight (complete, kg)
Max load on pin (kg)
Pin dia vs load (mm/ton)
Conrod weight (kg)
Total piston + conrod weight (kg)
Max load on big end (kg)
Total piston + 1/3rd conrod weight
Max reciprocating load (kg)
Main bearing diameter
Big end diameter
Crank overlap
Crank bearings
Overlap vs reciprocating weight (kg/mm)
Main bearing surface speed (m/s)
Conrod bearing surface speed (m/s)
2
Alfa RomeoBusso2.5 12v24926V68868.3131.11.9222.00426750220115.49.990.64140915.620.671.3128830.863190059.96251.9921.83487.076.755.85
3
Alfa RomeoBusso3.0 12v29596V69372.6131.11.8122.00406750237216.39.280.595141115.590.7251.21928910.837198459.96251.9919.684100.856.755.85
4
Alfa RomeoBusso3.0 24v29596V69372.6130.91.8020.01366750237316.38.430.556131915.160.6191.17527880.762180959.96251.9919.68491.926.755.85
5
Alfa RomeoBusso3.0 24v29596V69372.6130.91.8020.01366750237316.38.430.54128115.610.611.1527280.743176459.96251.9919.68489.636.755.85
6
Alfa RomeoBusso3.2 24vRedline31796V69378130.561.6720.01337200295218.76.780.528155912.840.6651.19335220.750221359.96251.9916.984130.357.206.24
7
Alfa RomeoBusso3.2 24v JungleJustice31796V69378130.561.6720.01337600328919.86.080.569187110.690.6651.23440590.791260059.96251.9916.984153.187.606.59
8
Alfa RomeoBusso3.2 24vMax stock rpm31796V69378130.561.6720.01337600328919.86.080.528173711.520.6651.19339240.750246659.96251.9916.984145.247.606.59
9
Alfa RomeoBusso
3.2 24v CPS pistons, Maxspeeding Rods
31796V69378131.11.6820.01347600328619.86.090.5164312.1859.96251.9916.9847.606.59
10
Alfa RomeoBusso3.3l 24v big bore32866V69872.6130.91.8020.013659.96251.9919.684
11
Alfa RomeoBusso3.4l 24v big bore34216V610072.6130.91.8020.01367600300818.46.6559.96251.9919.6847.606.59
12
Alfa RomeoBusso
3.7l 24v big bore JungleJustice, Pauter rods
Redline36766V610078131.11.6820.01347600328619.86.090.526172811.580.6851.21139790.754247859.96251.9916.984146.007.606.59
13
Alfa RomeoBusso
3.7l 24v big bore JungleJustice, stock rods
OK Tech 9000rpm36766V610078131.11.6820.01349000460823.44.340.52624248.250.6651.19154880.748344559.96251.9916.984202.938.997.80
14
Alfa RomeoNord1750Max reliable rpm17794I48088.5156.971.7722.00397500358422.16.140.525188211.690.741.26545340.772276659.965549.993510.735257.777.506.25
15
Alfa RomeoNord2000Redline19624I48488.5156.971.7722.00396250248918.48.840.59146914.980.741.3333100.837208259.965549.993510.735194.096.255.21
16
Alfa RomeoNord2000Reasonable rpm19624I48488.5156.971.7722.00397000312220.77.050.59184211.940.741.3341530.837261259.965549.993510.735243.477.005.83
17
Alfa RomeoNord2000
Well balanced stock engine
19624I48488.5156.971.7722.00398000407823.65.390.5924069.140.741.3354240.837341259.965549.993510.735318.008.006.67
18
Alfa RomeoNord200019624I48488.5156.971.7722.00390.62159.965549.993510.735
19
Alfa RomeoNord2000 Maxspeeding rods19624I48488.5156.971.7722.00390.62459.965549.993510.735
20
Alfa RomeoNord2000 1992 Motronic19624I48488.5156.971.7722.00390.659.965549.993510.735
21
Alfa RomeoInline 62600 I6Redline25846I68379.61481.8624.00456500239617.210.020.56134117.890.681.2429700.78718846353.718.557101.596.835.82
22
Alfa RomeoInline 62600 I6
Extremely strong harmonics
25846I68379.61481.8624.00457200293919.18.170.56164614.580.681.2436450.78723126353.718.557124.657.566.44
23
Alfa RomeoInline 62600 I6 est. forged piston
Extremely strong harmonics
25846I68379.61481.8624.00457900353921.06.780.425150415.960.681.10539100.65223066353.718.557124.318.307.07
24
Alfa RomeoInline 6
2600 I6 est. forged piston and conrod
Extremely strong harmonics
25846I68379.61481.8624.00458200381221.86.300.425162014.810.550.97537170.60823196353.718.557125.028.617.34
25
Alfa RomeoV8Montreal 2.625948V88064.51302.0222.00447000221215.19.940.485107320.500.561.04523120.672148654.99344.96617.73583.826.425.25
26
AudiR52.1l Turbo21445I579.586.41361.576000230617.30.7157.96845.94858.7665.804.59
27
AudiR52.1l NA21445I579.586.41361.576000230617.30.6557.96845.94858.7665.804.59
28
AudiR52.2l NA22265I58186.41441.670.61457.96845.94858.766
29
AudiR52.2l Turbo S2Rev limiter22265I58186.41441.6722.00377200327320.76.720.466152514.420.6341.136010.677221757.96845.94858.766
30
AudiR52.2l Turbo S2 JE pistonsRev limiter22545I581.586.41441.6720.00337200327320.76.110.419137114.580.6341.05334470.630206357.96845.94858.766
31
AudiR52.3l Turbo23095I582.586.457.96847.7679.676
32
BLO-Series2.0l19964I484.5891491.6720.64355750214817.19.610.476102220.180.7251.20125800.718154254.019547.70456.365242.315.184.57
33
BLO-Series2.0l low-comp van pistons19964I484.5891491.6720.64355750214817.19.610.56120317.160.7251.28527600.802172254.019547.70456.365270.675.184.57
34
BLO-Series2.0l Turbo19964I484.5891491.6720.64355750214817.19.6154.019547.70456.3655.184.57
35
BMCC-Series2.6l26406I679.3888.9167.71621.8922.22426000227217.89.781.78404560.31150.806511.1146.035.08
36
BMCC-Series2.9l 4-bearing29116I683.3688.9177.82.0022.22446000224417.89.900.637142915.541.0151.65237070.975218960.31150.806511.114197.026.035.08
37
BMCC-Series2.9l 4-bearing29116I683.3688.9177.82.0022.22446000224417.89.900.637142915.541.0151.65237070.975218960.31150.806511.114197.026.035.08
38
BMCC-Series2.9l 4-bearing6200rpm breaks cranks29116I683.3688.9177.82.0022.22446200239618.49.270.637152614.561.0151.65239580.975233760.31150.806511.114210.376.235.25
39
BMCC-Series
2.9l 4-bearing race, forged crank
7000rpm29116I683.3688.9177.82.0022.22447000305420.77.281.1260.31150.806511.1140.007.045.93
40
BMCC-Series2.9l 7-bearing29116I683.3688.9177.82.0022.22446000224417.89.900.637142915.541.0151.65237070.975218960.31150.806511.117197.026.035.08
41
BMCC-Series2.9l 7-bearing29116I683.3688.9177.82.0022.22446000224417.89.900.64143615.471.021.6637250.980219960.31150.806511.117197.966.035.08
42
BMCE-Series2.2l22246I676.281.280.4570.77657.159547.654511.777
43
BMCE-Series2.6l26196I676.295.757.159547.65454.567
44
BMCB-Series
1.8 4-ring AE, early angle rods
Good street rpm17994I480.2688.9165.11.8620.62386000228017.89.050.546124516.570.9641.5134430.867197855.054547.65296.905286.475.514.77
45
BMCB-Series
1.8 4-ring aftermarket, early angle rods
Good street rpm17994I480.2688.9165.11.8620.62386000228017.89.050.448102220.190.9641.41232200.769175455.054547.65296.905254.105.514.77
46
BMCB-Series1.8 4-ring AE, late rodsGood street rpm17994I480.2688.9165.11.8620.62386000228017.89.050.546124516.570.851.39631830.829189155.054547.65296.905273.925.514.77
47
BMCB-Series
1.8 4-ring aftermarket, late rods
Good street rpm17994I480.2688.9165.11.8620.62386000228017.89.050.448102220.190.851.29829600.731166855.054547.65296.905241.555.514.77
48
BMWM30M30B2524956I68671.61351.8922.00416500214815.510.240.68146115.060.7051.38529750.915196559.979547.983518.187108.106.505.20
49
BMWM30M30B2827886I686801351.6922.00376500246317.38.930.68167513.140.681.3633490.907223359.979547.983513.987159.696.505.20
50
BMWM30M30B3029866I689801351.6922.00376500246317.38.930.72559.979547.983513.9876.505.20
51
BMWM30M30B3029866I689801351.6922.00376500246317.38.930.7172412.760.671.3733740.923227459.979547.983513.987162.636.505.20
52
BMWM30M30B30 CSL30036I689.25801351.6922.00376500246317.38.930.71174812.580.671.3833980.933229859.979547.983513.987164.396.505.20
53
BMWM30M30B3434306I692861351.5722.00356500269618.68.160.68183312.000.671.3536390.903243559.979547.983510.987221.766.505.20
54
BMWM30M30B3434306I692861351.5722.00356500269618.68.160.66177912.360.7251.38537340.902243159.979547.983510.987221.356.505.20
55
BMWM30M30B36 stroker, S38 crank35906I692901441.6022.00356000239218.09.200.573137116.050.721.29330930.813194559.979547.98358.987216.536.004.80
56
BMWM20M20B2524946I684751351.8022.00406700241616.89.110.436105320.890.6381.07425950.649156759.98544.98214.987104.586.705.02
57
BMWM20M20B2524946I684751351.8022.00406700241616.89.110.535129217.020.651.18528630.752181659.98544.98214.987121.196.705.02
58
BMWM20M20B2726936I684811301.6022.00356000215116.210.230.51109720.050.6261.13624440.719154659.98544.98211.987129.016.004.50
59
BMWM50M50B2524946I684751351.8022.00408000344420.06.390.504173612.670.6021.10638090.705242759.98544.98214.987161.988.006.00
60
BMWM50M50B25, complete24946I684751351.8022.00408000344420.06.390.519178812.310.6531.17240370.737253759.98544.98214.987169.338.006.00
61
BMWM50M50B25TU, complete24946I684751351.8022.00408000344420.06.390.467160813.680.6711.13839190.691237959.98544.98214.987158.768.006.00
62
BMWM52M52B28, completeRedline27936I684841351.6122.00356500261718.28.410.463121218.150.6011.06427850.663173659.98544.98210.487165.616.504.87
63
BMWM52M52B28, completeMax typical27936I684841351.6122.00357000303519.67.250.463140515.650.6011.06432300.663201459.98544.98210.487192.067.005.25
64
BMWM52M52B28, completeMax some people27936I684841351.6122.00357200321120.26.850.463148714.800.6011.06434170.663213059.98544.98210.487203.207.205.40
65
BMWM52M52B28TU, completeRedline27936I684841351.6122.00356500261718.28.410.454118818.510.6011.05527610.654171359.98544.98210.487163.36
66
BMWM54M54B25, completeRedline24946I684751451.9322.00436500223816.39.830.41492623.757
67
BMWM54M54B3029796I68489.61351.5122.00336500283919.47.750.421119518.400.6021.02329050.622176559.98544.9827.687229.736.504.87
68
BMWM54M54B30 alternate29796I68489.61351.5122.00336500283919.47.750.421119518.400.581.00128420.614174459.98544.9827.687227.026.504.87
69
BMWM54
M54B30 CP pistons, arrow rods
29796I68489.61351.5122.00336500283919.47.750.392111319.770.5350.92726320.570161959.98544.9827.687210.766.504.87
70
BMWN54N54B30Redline29796I68489.6144.981.6222.00367000323220.96.810.326105420.887
71
BMWN55N55B30Redline29796I68489.6144.351.6122.00357000323620.96.807
72
BMWN52N52B30Redline29966I68588147.351.6722.00377000314820.56.997
73
BMWB58B58B30Redline29986I68294.61481.5622.00347000344222.16.397
74
BMWS52S52B32Redline32016I686.491138.991.5322.00347800413723.75.320.458189511.610.5380.99641210.637263759.98148.9838.9877.806.37
75
BMWS52S52B32Redline32016I686.491138.991.5322.00347800413723.75.320.433179212.2859.98148.9838.9877.806.37
76
BMWS52S52B32Max stock rpm32016I686.491138.991.5322.00348000435224.35.050.433188511.6759.98148.9838.9878.006.53
77
BMWS54S54B32Z Coupe redline32466I68791138.991.5319.91307500382522.85.200.59622808.730.641.23647280.809309659.98148.9838.987344.687.506.12
78
BMWS54S54B32
M3 redline, more bearing failures ~100k miles (think due to bearing quality)
32466I68791138.991.5319.91308000435224.34.570.59625947.680.641.23653790.809352259.98148.9838.987392.178.006.53
79
BMWS54S54B32
Dinan redline, backed down later due to bearing failures
32466I68791138.991.5319.91308100446224.64.460.59626597.490.641.23655150.809361159.98148.9838.987402.048.106.61
80
BMWS54S54B32
Revved regularly on track, bearings replaced
32466I68791138.991.5319.91308500491325.84.050.59629286.800.641.23660730.809397759.98148.9838.987442.728.506.94
81
BMWS54
S54B32 standard pistons, Molnar rods
32466I68791138.991.5319.91308500491325.84.050.59629286.800.4931.08953510.760373659.98148.9838.987415.928.506.94
82
BMWS54
S54B32 JE pistons, Molnar rods
32466I68791138.991.5319.91308500491325.84.050.45122168.980.4930.94446380.615302359.98148.9838.987336.608.506.94
83
BMWS54
S54B32 JE pistons, Lang Racing rods
32466I6879119.91850025.80.4510.5460.99759.98148.9838.9878.506.94
84
BMWS54S54B32 3.4l stroker7600rpm for longevity33556I687.593138.991.4919.91307600403823.64.930.451182110.930.641.09144050.664268259.98148.9837.987336.067.606.20
85
BMWS54
S54B32 3.5l stroker, billet crank, estimated CP pistons, Arrow rods est.
9000rpm, 4 years seemed ok but not sure what mileage, did say increased bore wear
34606I68797138.991.4319.91299000597529.13.330.45126957.390.4930.94456410.615367759.98148.9835.987614.649.007.35
86
BMWS55S55B30Redline29796I68489.6144.351.6122.00357500371522.45.927
87
BMWS38S38B357600rpm extended34536I693.4841441.7122.00387600352121.36.250.573201810.900.721.29345530.813286359.97955213.997204.657.606.59
88
BMWS38S38B35
7800rpm brief, harmonics above
34536I693.4841441.7122.00387800370921.85.930.573212510.350.721.29347960.813301659.97955213.997215.567.806.76
89
BMWS38S38B36Redline35356I693.4861441.6722.00377250330020.86.670.573189111.640.721.29342660.813268359.97955212.997206.527.256.28
90
BMWS38S38B38
Redline, pretty much max rpm
37956I694.690142.91.5922.00357250350021.86.290.588205810.690.6351.22342800.800279859.97955210.997254.647.256.28
91
BMWM57M57D30Redline29936I684901351.5030.00454750152514.319.6759.979544.98357.4874.753.56
92
BMWM57M57D30Max rpm29936I684901351.5030.00455500204416.514.6759.979544.98357.4875.504.12
93
BMWM60M60B3029978V88467.6
94
BMWM60M60B4039828V889801431.7922.0039
95
BMWM62M62B3534988V88478.91431.8122.0040
96
BMWM62M62B44Redline43988V89282.71431.7322.00386100222916.89.87
97
BMWM62M62B44
6450rpm 4-cyl gauge redline
43988V89282.71431.7322.00386450249217.88.83
98
BMWM62M62B44Dinan redline43988V89282.71431.7322.00386800277018.77.94
99
BMWS62S62B50Redline47338V89289140.721.5822.00357000323020.86.8166.4817.76
100
BMWS62S62B50Max briefly47338V89289140.721.5822.00357200341721.46.4466.4817.98