Mazda FC RX-7 — Guy Graham-Bagrie (Pro-Sport)
An under-utilized chassis in previous years, the FC RX-7 has seen a resurgence this season with four examples in the mix. Guy is one of the originals and has been drifting his example for quite some time. The Billspeer knuckles have been a staple in the car for almost as long as he’s driven it, providing all he desires in the way of lock. Because the S4 lower ball joint bolts on, Guy made a 30mm plate that it now sits atop, creating a straighter rack end connection. Although unsure on the exact setting, he believes the Ackermann to be pretty close to zero.
The front did run a sway bar, but, as expected, got in the way of lock and was quickly removed, although he did tell us, “I left the links in there to piss off Neil [crew member] every time he sees them.”
Most people in the FC world will tell you that the rear sway bar is no good, so Guy has binned his and never looked back. The HKS Hyper Ds are very, very old from what he’s told us.
“The rears are not captive, and droop quite a bit when I jack it up. It’s rough and ready, but that’s the next thing on the list to address.”
Tyre pressures and alignment are used to chase grip, with a wee bit of toe-in at the rear to give it some bite. Everything else in the rear is factory, with a camber bar fitted to lift the subframe up to take the camber out — the issue here is that it only mounts to one side and makes it uneven, so he has relocated the links to lift it up a bit further and help to balance things out.
“It does squat a fair bit, which is good for grip, but that’s probably more because of the shot shocks.”
STRUTS: HKS HYPER D KNUCKLES: BILLSPEER ARMS: (F) 30MM PLATE SPACER, (R) CAMBER BAR