Saturday, 5 April 2014

Sports Turbo Rear Anti Roll Bar

Having fitted the front ARB before going for the full geometric setup, whilst at NMS Chris advised that I should fit a rear ARB to keep the car balanced.  I'd planned to fit the LSD and Rear ARB over the winter but in the end focused on the light weight flywheel and associated clutch and release bearing changes.

Looking at the WSCC forums I saw a very neat rear ARB fitted to a Mega S2000 on a blog (Andy Bray's in the Middle East) that looked as if it could be fitted without removing the fuel tank and rear bodywork.  After a conversation with the Russ in Westfield Parts I discovered that it was the ARB that had been developed for the Sports Turbo and, most importantly, my chassis and lower rear wishbones already had the brackets ready for it to be fitted.  The slight disadvantage is that due to the requirements of Type Approval, the ST ARB has minimal  adjustment but then Westfield had spent a lot of development £s on the ST and Mega S2000 to make sure that it was as good as possible straight out of the box.  Mark Walker confirmed that fitment on an FW only required removal of the boot box so I ordered one.  A couple of days later a package arrived from WF and I set about fitting it.

Step 1 - Remove the powder coat from the thickened section of the ARB where it fits to the aluminium mounting brackets - used a Stanley knife blade and emery cloth and it took quite a while.

Step 2 - Remove the FW boot lid and liner

Step 3 - Trial fit of the ARB then grease it up with copper slip and install on the aluminium mounts.

Step 4 - Assemble the male/female rose joints to form the drop links and fit to the lower wishbone - needed the car to be lifted on to axle stands for access.

Step 5 - Drop car back on to a level surface and then ballast with James, adjust the drop links, fit the final bolts and spacers into the ARB with thread lock and then tighten up the drop link lock nuts.

Step 6 - Refit the boot liner and boot lid.

Job only took 2 hours of labour, 1 of which was cleaning off the powder coat, but the elapsed time was 5 days waiting for longer cap head bolts to arrive to allow the spacers to be fitted at step 5 above.

Noticed that the rear wishbones have been affected by road rock salt so will need to address this over next winter if not before.

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