General Information
For the best overall experience it is recommended to run a bush at one end and a heim on the other. This allows for the heim to do most of the movement while the bush soaks up the vibrations.
The items below are what I purchased to make my arms.
PSR $130
PSR Threaded Bush Housings - $130
Design Fab $204
DFI 1.25’ Heim RH Thread - $78
DFI 1.25’ Heim LH Thread - $78
4 x Misalignment Spacer 1’ - 18mm - $48
Arms $450 - $550 (rough guess)
2 x 900mm Solid 7075 Alloy Arms
I sourced my arms from a Melbourne engineering company. However, any place that machines alloy links will be able to make them.
When sourcing arms you must outline the threads that need to be machined into each end. I sent photos of each of the products to the company to ensure they got them right.
1 arm will need a RH heim and LH bush while the other will need a LH heim and RH bush. This allows the arms to be adjusted without having to remove them from the car.
Fitting Information
Mounting
To weld the long arm brackets in the fuel tank will have to be removed to allow access. The factory lower control arm mounts will then have to be cut off and cleaned up.
How to install long arms
Assemble arms and adjust them so they are even
Bolt bush end to diff
Bolt heim end to assembled mount and raise it up until it meets the underside of the chassis
Ensure the edge of the mount lines up with the outside of the chassis rail and once it does tac the mount in place
Remove the arm and fully weld off the mount
I would also recommend spraying the top side of the mount and the bottom of the chassis in weld-through primer to eliminate the chance of rust
Upper Drop Brackets
The upper drop brackets slide over and bolt to the factory upper control arms mounts. They are then required to be welded to the factory mounts to ensure they never move.
Once everything is installed and painted you can reinstate the fuel tank
Bolts
High tensile bolts will provided for the upper drop brackets. The factory bolts are used for the long arms