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[Datsun 1200 encyclopedia]

Knuckle Arm

Revision as of 06:51, 23 August 2011; view current revision
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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.

13022_4e3cbb95cad29.jpg

Datsun knuckle arms come in two basic sizes, 75mm & 80mm:

  • narrow bolt spacing for 45mm strut tubes (used by B110)
  • wide bolt spacing for 50.8 mm strut tubes (used by most other Datsuns)

23761.jpg

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
23760.jpg

Comparison

It seems only B310 with W5000/W5060 steering arm uses the larger tie-rod ends.

Knuckle Arm

B120 early +H1000/H1025 rod assy
H1000/H5000
B120 7510- +H1025 rod assy
H7400 -8507
H7440 8508-
23726.jpg 23727.jpg 23728.jpg 
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
23723.jpg 23724.jpg 23725.jpg 
W5000/W5060 power cars

B310 Steering Knuckle Arms
16436.jpg

B310
3890.jpg

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
  • 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)

23731.jpg

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.

16496.jpg 23732.jpg


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