Z1 Motorsports 300zx Front Upper Control Arm - Z1Motorsports.com

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 #2using the Inner Front Upper Control Arm Bolt.It may be possible that the Front Upper Control Arm Bracket or the ThirdMember side of the control arm mounting bracket may be damaged fromprevious alignment/suspension servicing. If the arms will not fit properlydue 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 OEMspecifications. DOUBLE CHECK that you have inserted the correct side ofthe Z1 Front Upper Control Arm into the brackets BEFORE attempting anyadjustments.Be sure to insert the INNER Front Upper Control Arm Bolt in theproper direction!1990 – 1999 Nissan 300zx (Fairlady Z)Front Suspension TorqueSpecifications80-94 ft/lbs(108-127 N m)43-58 ft. lbs.(59-78 N m)65-80 ft. lbs.(88-108 N m)The ENGINE Side (WIDER end) of the Z1 Front Upper ControlArm should be inserted into the Front Upper Control ArmBracket.* A Paint Mark found on the control arm will indicatethe ENGINE side (WIDER end).** The Race Version of the Z1 Motorsports Front UpperControl Arms will have a bolt included for theENGINE side (WIDER end) of the arm. This bolt willreuse the OEM Nut and will replace the OEM bolt.Failure to use the supplied bolt will prevent properinstallation of the Z1 Front Upper Control Arms.Figure #35) Install and hand tighten a Front Upper Control Arm Nut onto theINNER bolt.6) Attach the Front Upper Control Arm/Bracket assembly onto thechassis using the previously removed Front Upper Control ArmBracket Nuts. Torque the bolts as indicated in Figure #3.

7) Insert the OUTER Front Upper Control Arm Bolt into the ThirdMember/ King Pin. Again, be sure to insert the bolt in the properdirection.8) Install and hand tighten a Front Upper Control Arm Nut on the OuterBolt.9) Re-install any previously removed hardware and wheels.10) Torque the Front Upper Control Arm Jam Nuts to 80 ft. lbs. (108.5Nm) while the vehicle is at static height (with the weight of thevehicle resting on the suspension). The use of Loctite ® REDthread locking compound is recommended under the jam nutsonce the alignment is complete. If thread locker is not usedthere is a possibility the jam nuts could loosen over time. Thisstep is easier to complete after the arms have been bolted onto thevehicle.**A special 30mm adapter (Crowfoot Wrench) will be required to dothis**This is easier to achieve while the vehicle is on a 4-Post Lift orAlignment Rack. Access to the Inner and Outer Control ArmBolts/Nuts can be made under the car by reaching around thefront suspension.11) Torque the Inner and Outer Control Arm Bolts/Nuts as indicated inFigure #3 while the vehicle is at static height (with the weight of thevehicle resting on the suspension).12) Perform a final test drive of the vehicle.13) Have a professional, four-wheel alignment performed by a certifiedshop.