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| == Size == | == Size == | ||
| - | Measure the gear. This H150 unit measures 150mm | + | Measure the gear |
| - | <br>[http://datsun1200.com/modules/myalbum/photo.php?lid=25277 http://datsun1200.com/uploads/thumbs/25277.jpg] | + | <br>{{Album|25277}} |
| H145 measures 145mm | H145 measures 145mm | ||
| + | H150 measures 150mm | ||
| H165 measures 165mm | H165 measures 165mm | ||
| - | etc. | + | H190 measures 190mm |
| == Pre-1980 == | == Pre-1980 == | ||
| Line 34: | Line 35: | ||
| Axle code is on Chassis [[Identification]] plate 1980-on, in the engine compartment. Starting in mid-80s, Axle Code is on door-jamb sticker. | Axle code is on Chassis [[Identification]] plate 1980-on, in the engine compartment. Starting in mid-80s, Axle Code is on door-jamb sticker. | ||
| - | <br>[http://datsun1200.com/uploads/photos/21048.jpg http://datsun1200.com/uploads/photos/21048.jpg] | + | <br>{{Album|21048}} |
| Factory LSD has a sticker on the back of the diff housing. | Factory LSD has a sticker on the back of the diff housing. | ||
| Line 42: | Line 43: | ||
| Even better is to note the stamped numbers on the ring gear. For example, this unit is stamped 39:11 | Even better is to note the stamped numbers on the ring gear. For example, this unit is stamped 39:11 | ||
| - | <br>[http://datsun1200.com/modules/myalbum/photo.php?lid=24439 http://datsun1200.com/uploads/thumbs/24439.jpg] | + | <br>{{Album|24439}} |
| - | <br>39 divided by 11 = 3.545 ratio | + | |
| - | <br>[http://datsun1200.com/modules/myalbum/photo.php?lid=25276 http://datsun1200.com/uploads/thumbs/25276.jpg] | + | 39 divided by 11 = 3.545 ratio |
| + | <br>{{Album|25276}} | ||
| Pinion gear is similarly stamped | Pinion gear is similarly stamped | ||
| - | <br>[http://datsun1200.com/modules/myalbum/photo.php?lid=25278 http://datsun1200.com/uploads/thumbs/25278.jpg] | + | <br>{{Album|25278}} |
Revision as of 23:53, 30 January 2017
Contents |
Size
Measure the gear
H145 measures 145mm H150 measures 150mm H165 measures 165mm H190 measures 190mm
Pre-1980
B10: H145, 3.900 VB10: 4.375 (van/wagon) B20: 4.375 S.T.D. / 4.625 Optional (ute/pick-up) B110: H145 3.900 VB110: H145 4.111 (van/wagon) PB110: H165 4.111 B120: H165 4.111 (ute/truck) B210 1974: H145 3.900 B210 1975-up: H150 3.700 or 3.889 PB210/GB210: H165 B310: H150 various A10: H165 various
1980-up
Axle Codes H = Hitachi removable gear carrier (pumpkin/centre section) HA - H145 (145mm diameter ring gear, 5.709 inch) HB - H150 (150mm diameter ring gear, 5.906 inch) HC - H165 (165mm diameter ring gear, 6.496 inch) HD - H190 (190mm diameter ring gear, 7.480 inch) ALUMINUM CARRIER HE - H190 CAST IRON CARRIER HF - H190A revised for strength
EXAMPLE: HF38 = H190 with 3.889 ratio was factory fitted
Axle code is on Chassis Identification plate 1980-on, in the engine compartment. Starting in mid-80s, Axle Code is on door-jamb sticker.
Factory LSD has a sticker on the back of the diff housing.
Counting
To verify the ratio in the vehicle matches the original equipment (or build tag), you may count turns of the wheel vs turns of the driveshaft. If slightly less than 4 turns of the driveshaft results in one turn of the wheels, it is a 3.9 ratio. If it takes a bit more than 4 turns, it is a 4.111 ratio.
Even better is to note the stamped numbers on the ring gear. For example, this unit is stamped 39:11
39 divided by 11 = 3.545 ratio
Pinion gear is similarly stamped
