Z1 Z32 Front Upper Control Arm Install M... 331KB Jul 19 2012 05 ...

Z1 Motorsports 2877 Carrollton Villa Rica Hwy Carrollton GA 30116
770.838.7777 www.Z1Motorsports.com
Z1 Motorsports 300zx Front Upper
Control Arm
©Copyright 2012 Z1 Motorsports Inc.
Items Included:
Z1 Motorsports 300zx Front Upper
Control Arms (1 Pair)
Z1 Motorsports 300zx Front Upper Control
Arm Installation Manual
WARNING!:
Extreme caution should be taken when performing ANY maintenance or performance
upgrades to your vehicle. Please obey and abide by any WARNING or CAUTION
labels placed on the various components and tools used when servicing your vehicle.
If you have any questions regarding the installation or the components included with
the Z1 Motorsports 300zx Front Upper Control Arm Set, consult with a professional
mechanic or contact Z1 Motorsports for more information.

Installation Note:
Professional Installation is HIGHLY recommended. A complete
four- wheel alignment is recommended in order to prevent
accelerated tire wear, vehicle instability, and potentially hazardous
vehicle handling behavior.
1990 – 1999 Nissan 300zx (Fairlady Z)
Front Suspension Torque
Specifications
Disassembly:
1) Apply the Parking Brake
2) Properly raise and support the front of your 300zx using jack stands
and the proper jacking points on your vehicle’s chassis (Refer to the
vehicle’s Owner’s Manual).
3) Raise the vehicle’s hood.
4) Disconnect the NEGATIVE (--) Battery Terminal
5) Remove both Driver and Passenger Front wheels
6) Remove both Inner and Outer Front Upper Control Arm Nuts (DO
NOT DISCARD!)
7) Remove the Outer Front Upper Control Arm Bolt (DO NOT
DISCARD!). Be sure to mark the Outer Bolt properly in order to
prevent confusion with the Inner Bolt (removed in Step 10). This bolt can
only be re-installed in this location.
8) Remove the four (4) Front Upper Control Arm Bracket Nuts
9) Remove the Front Upper Control Arm Bracket with the Front Upper
Control Arm Attached as an assembly. DO NOT mix the LEFT and
RIGHT side brackets.
10) Remove the Inner Front Upper Control Arm Bolt (DO NOT
DISCARD!) Be sure to mark the Inner Bolt Properly in order to
prevent confusion with the Outer Bolt (removed in Step 7).
80-94 ft/lbs
(108-127 N m)
43-58 ft. lbs.
(59-78 N m)
FIGURE #3
65-80 ft. lbs.
(88-108 N m)

Notes:
7) Insert the OUTER Front Upper Control Arm Bolt into the Third
Member/ King Pin. Again, be sure to insert the bolt in the proper
direction.
8) Install and hand tighten a Front Upper Control Arm Nut on the Outer
Bolt.
9) Re-install any previously removed hardware and wheels.
10) Torque the Front Upper Control Arm Jam Nuts to 80 ft. lbs. (108.5
Nm) while the vehicle is at static height (with the weight of the
vehicle resting on the suspension). This step is easier to complete
after the arms have been bolted onto the vehicle.
**A special 30mm adapter (Crowfoot Wrench) will be required to do
this**
This is easier to achieve while the vehicle is on a 4-Post Lift or
Alignment Rack. Access to the Inner and Outer Control Arm
Bolts/Nuts can be made under the car by reaching around the
front suspension.
11) Torque the Inner and Outer Control Arm Bolts/Nuts as indicated in
Figure #3 while the vehicle is at static height (with the weight of the
vehicle resting on the suspension).
12) Perform a final test drive of the vehicle.
13) Have a professional, four-wheel alignment performed by a certified
shop.
1990 – 1999 Nissan 300zx (Fairlady Z)
Front Suspension Diagram
Front Upper Control Arm
Inner Bolt
Front Upper Control
Arm Outer Bolt
FIGURE #1
Front Upper Control
Arm Bracket
Front Upper Control Arm
Bracket Nut
Front Upper
Control Arm Nut
Third Member
(King Pin)
Hardware Note:
Inspect all suspension and brake components for damage or abnormal wear.
Replace any damaged components before continuing with the installation of
the Z1 Motorsports 300zx Front Upper Control Arms. Pay close attention to
all fasteners which will be re-used during installation.

Installation Note:
If you are attempting to install the Z1 Motorsports 300zx Front Upper Control
Arms WHILE AWAY from an alignment shop, refer to Step #1. If you are
installing the arms WHILE AT an alignment shop, skip to Step #2.
Installation:
1) Before installing the Z1 Motorsports 300zx Front Upper Control Arms,
adjust the arms initial length to match the factory length.
Be sure to adjust the length of the arms by turning the Adjuster Bolt
ONLY to ensure an even amount of movement and thread engagement
inside of the Front Upper Control Arm Bodies.
2) Orient the Front Upper Control Arm Bodies as shown in Figure #2.
ENGINE
Ensure that there is an equal amount
of spacing and adjustment along the
Adjuster Bolt as shown below when
installing the Z1 Motorsports 300zx
Front Upper Control Arms.
WHEEL
3) Hand tighten the jam nuts
4) Before re-attaching the Front Upper Control Brackets to the chassis.
Install the new Front Upper Control Arms as indicated in Figure #2
using the Inner Front Upper Control Arm Bolt.
It may be possible that the Front Upper Control Arm Bracket
or the Third Member side of the control arm mounting
bracket may be damaged from previous alignment/
suspension servicing. If the arms will not fit properly due to
over-tightening of the Inner and Outer Front Upper
Control Arm Bolts, additional work will be required to
adjust the brackets to the original OEM specifications.
DOUBLE CHECK that you have inserted the correct side of
the Z1 Front Upper Control Arm into the brackets BEFORE
attempting any adjustments.
Be sure to insert the INNER Front Upper Control Arm Bolt in the
proper direction!
The ENGINE Side (WIDER end) of the Z1 Front Upper Control
Arm should be inserted into the Front Upper Control Arm
Bracket.
* A Paint Mark found on the control arm will indicate
the ENGINE side (WIDER end).
Front Upper Control
Arm Body
Jam
Nuts
Adjuster Bolt
Front Upper Control
Arm Body
** The Race Version of the Z1 Motorsports Front Upper
Control Arms will have a bolt included for the
ENGINE side (WIDER end) of the arm. This bolt will
reuse the OEM Nut and will replace the OEM bolt.
Failure to use the supplied bolt will prevent proper
installation of the Z1 Front Upper Control Arms.
FIGURE #2
5) Install and hand tighten a Front Upper Control Arm Nut onto the
INNER bolt.
Installation Note:
1) Hand
The arms should only be able to be installed ONE WAY. The WIDER end
3) Hand tighten the Jam Nuts.
should be installed into the Front Upper Control Arm Bracket (ENGINE
SIDE). The NARROWER end should be installed into the King Pin (WHEEL
SIDE).
6) Attach the Front Upper Control Arm/Bracket assembly onto the
chassis using the previously removed Front Upper Control Arm
Bracket Nuts. Torque the bolts as indicated in Figure #3.