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| Datsun knuckle arms come in two basic sizes, 75mm & 80mm: | Datsun knuckle arms come in two basic sizes, 75mm & 80mm: | ||
| - | * narrow bolt spacing for 45mm strut tubes (used by B110) | + | * 75mm narrow bolt spacing for 45mm strut tubes (used by B110) |
| - | * wide bolt spacing for 50.8 mm strut tubes (used by most other Datsuns) | + | * 80mm wide bolt spacing for 50.8 mm strut tubes (used by most other Datsuns including 280ZX) |
| + | * 91mm spacing on 240Z | ||
| [http://datsun1200.com/modules/myalbum/photo.php?lid=23761 http://datsun1200.com/uploads/photos/23761.jpg] | [http://datsun1200.com/modules/myalbum/photo.php?lid=23761 http://datsun1200.com/uploads/photos/23761.jpg] | ||
Revision as of 03:24, 18 June 2012
The "Knuckle arm" (steering arm) is sandwiched between the Ball Joint and the strut assembly.
Contents |
Overview
There is only one size for B110, the 45mm strut type. But it comes in two versions: 1970-1975, and 1976-up.
Datsun knuckle arms come in two basic sizes, 75mm & 80mm:
- 75mm narrow bolt spacing for 45mm strut tubes (used by B110)
- 80mm wide bolt spacing for 50.8 mm strut tubes (used by most other Datsuns including 280ZX)
- 91mm spacing on 240Z
Additionally, the size of the taper hole for the ball joint is important.
- B110 and B210 and B310 small uses the small taper
- Some B310 use a large taper
Then there is the length of the arm -- long arm give a slower steering response, but less effort is required to turn the wheels. Shorter arms give faster response.
Short-arm Modified for use with 2" struts
The large-size B310 arm (commonly used when swapping struts) will change your 15:1 steering to an effective 16:1 as the arm is 7% longer. Even worse, when putting 2" struts in a 45mm B310 vehicle, the stock B310 16.4:1 steering will effectively turn into 17.6:1.
Comparison
It seems B310 with W5000/W5060 steering arm uses the same size tie-rod ends as the smaller units (B110 and B210).
Knuckle Arm
B120 early +H1000/H1025 rod assy H1000/H5000
B120 7510- +H1025 rod assy H7400 -8507 H7440 8508-
B210 early +H5025 H5000 H7400 late van
B210 late +H5025 rod assy H7400
PB210/USA B210 +H5800 rod assy U0101
B310 +W5025 rod assy H7400 regular cars
W5000/W5060 power cars
B310 Steering Knuckle Arms
B310
Part Numbers
steering arm
40052 = Knuckle Arm RH
40053 = Knuckle Arm LH
Knuckle Arm RH
- B10: 40052-18000 (different from newer models)
- B110: 40052-H1000 <- 40052-H5000
- PB110: 40052-H2501
- 510: 40052-H2501 from 1972 510, replaced 40052-H2500 replaced 40052-A8600
- B120: 40052-H5000 to 1974, 40052-H7400 (75-8504), 40052-H7440 (8504-)
- B210: 40052-H5000 (74-75 A12)
- B210: 40052-H7400 (1976-up A engine, except USA)
- B210: 40052-U0101 (USA, also PB, also L16)
- B310: 40052-W5000 (All US, all A15, most A14)
- B310: 40052-H7200 (A12, A13, and budget A14 models)
- B310: 40052-W5060 (big engines, 8001-up)
Spacers
When Lowering the front suspension, if going ultra-low, strut spacers (roll center adapters) are used. They are intended to correct the lower arm angle when the vehicle height is dropped, to minimize bump steer.
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