Mazda MX-5 NA silhouetteMX-5 NA

TECHNICAL DATA

TD-4spec table

Engine — B6 DOHC (continued)

Connecting rod and connecting rod bearing — Length (Center to center)
mm (in)
B6 DOHC132.85—132.95 (5.230—5.234)
Connecting rod — Bending
mm (in)
B6 DOHC0.075 (0.0030) max./50 (1.97)
Connecting rod — Small end bore (Bush inner diameter)
mm (in)
B6 DOHC20.003—20.014 (0.7875—0.7880)
Connecting rod — Big end bore
mm (in)
B6 DOHC48.000—48.016 (1.8898—1.8904)
Connecting rod — Big end width
mm (in)
B6 DOHC21.838—21.890 (0.8598—0.8618)
Connecting rod side clearance
Standard
mm (in)
B6 DOHC0.110—0.262 (0.0043—0.0103)
Connecting rod side clearance
Maximum
mm (in)
B6 DOHC0.30 (0.012)
Crankshaft — Crankshaft runout
mm (in)
B6 DOHC0.04 (0.0016) max.
Crankshaft — Main journal diameter
Standard size — Standard
mm (in)
B6 DOHC49.938—49.956 (1.9661—1.9668)
Crankshaft — Main journal diameter
Standard size — Minimum
mm (in)
B6 DOHC49.904 (1.9647)
Crankshaft — Main journal diameter
0.25 (0.010) undersize — Standard
mm (in)
B6 DOHC49.704—49.708 (1.9568—1.9570)
Crankshaft — Main journal diameter
0.25 (0.010) undersize — Minimum
mm (in)
B6 DOHC49.652 (1.9548)
Crankshaft — Main journal diameter
0.50 (0.020) undersize — Standard
mm (in)
B6 DOHC49.454—49.458 (1.9470—1.9472)
Crankshaft — Main journal diameter
0.50 (0.020) undersize — Minimum
mm (in)
B6 DOHC49.402 (1.9450)
Crankshaft — Main journal diameter
0.75 (0.030) undersize — Standard
mm (in)
B6 DOHC49.204—49.208 (1.9372—1.9373)
Crankshaft — Main journal diameter
0.75 (0.030) undersize — Minimum
mm (in)
B6 DOHC49.152 (1.9351)
Crankshaft — Main journal taper and out-of-round
mm (in)
B6 DOHC0.05 (0.0020) max.
Crankshaft — Crankpin diameter
Standard size — Standard
mm (in)
B6 DOHC44.940—44.956 (1.7693—1.7699)
Crankshaft — Crankpin diameter
Standard size — Minimum
mm (in)
B6 DOHC44.908 (1.7680)
Crankshaft — Crankpin diameter
0.25 (0.010) undersize — Standard
mm (in)
B6 DOHC44.690—44.706 (1.7594—1.7601)
Crankshaft — Crankpin diameter
0.25 (0.010) undersize — Minimum
mm (in)
B6 DOHC44.658 (1.7582)
Crankshaft — Crankpin diameter
0.50 (0.020) undersize — Standard
mm (in)
B6 DOHC44.440—44.456 (1.7496—1.7502)
Crankshaft — Crankpin diameter
0.50 (0.020) undersize — Minimum
mm (in)
B6 DOHC44.408 (1.7483)
Crankshaft — Crankpin diameter
0.75 (0.030) undersize — Standard
mm (in)
B6 DOHC44.190—44.206 (1.7398—1.7404)
Crankshaft — Crankpin diameter
0.75 (0.030) undersize — Minimum
mm (in)
B6 DOHC44.158 (1.7385)
Crankshaft — Crankpin taper and out-of-round
mm (in)
B6 DOHC0.05 (0.0020) max.
Main bearing — Main journal bearing oil clearance
Standard
mm (in)
B6 DOHC0.018—0.036 (0.0007—0.0014)
Main bearing — Main journal bearing oil clearance
Maximum
mm (in)
B6 DOHC0.10 (0.004)
Main bearing — Available undersize bearing
mm (in)
B6 DOHC0.25 (0.010), 0.50 (0.020), 0.75 (0.030)
Crankpin bearing — Crankpin bearing oil clearance
Standard
mm (in)
B6 DOHC0.028—0.068 (0.0011—0.0027)
Crankpin bearing — Crankpin bearing oil clearance
Maximum
mm (in)
B6 DOHC0.10 (0.004)
Crankpin bearing — Available undersize bearing
mm (in)
B6 DOHC0.25 (0.010), 0.50 (0.020), 0.75 (0.030)
Thrust bearing — Crankshaft end play
Standard
mm (in)
B6 DOHC0.080—0.282 (0.0031—0.0111)
Thrust bearing — Crankshaft end play
Maximum
mm (in)
B6 DOHC0.30 (0.012)
Thrust bearing — Bearing width
Standard size
mm (in)
B6 DOHC2.500—2.550 (0.0984—0.1004)
Thrust bearing — Bearing width
0.25 (0.010) oversize
mm (in)
B6 DOHC2.625—2.675 (0.1033—0.1053)
Thrust bearing — Bearing width
0.50 (0.020) oversize
mm (in)
B6 DOHC2.750—2.800 (0.1083—0.1102)
Thrust bearing — Bearing width
0.75 (0.030) oversize
mm (in)
B6 DOHC2.875—2.925 (0.1132—0.1152)
Timing belt — Belt deflection
mm (in)/98 N (10 kg, 22 lb)
B6 DOHC9.0—11.5 (0.35—0.45)

D. LUBRICATION SYSTEM

Lubrication System — B6 DOHC

Lubricating method
B6 DOHCForce-fed
Oil pump — Type
B6 DOHCTrochoid gear
Oil pump — Relief pressure
kPa (kg/cm², psi)
B6 DOHC343—441 (3.5—4.5, 50—64)
Oil pressure
1,000 rpm
kPa (kg/cm², psi)
B6 DOHC196—294 (2.0—3.0, 28—43)
Oil pressure
3,000 rpm
kPa (kg/cm², psi)
B6 DOHC294—392 (3.0—4.0, 43—57)

Search Manual

Search pages, specs, and procedures