Angus5
New Member
This is my first entry on this forum and I have a few questions in my bouncing around in my head.
Just lately I have been really enjoying watching old recordings of Bathurst and ATCC both Group C and A on youtube. The racing is fantastic, watching the cars circulate on bouncy tracks, with distinctly more body roll and suspension travel that a modern supercar. It is a joy to watch Brock in an Aussie V8 Commodore clearly out drive every body else.
I was an avid supercar spectator, up until the COTF rules came into place. Racing on billiard table smooth tracks with such taught, exotic suspension minimising any pitch, roll or yaw, I started to lose interest.
Reading an article on how supercars are constructed further degraded my enthusiasm. To quote,
“The bodies have to be moulded to fit the 2822mm wheelbase, the defined engine location, suspension points, front undertray position and rollcage. Not the other way around.”
“The only exterior panel of the ZB racer that is original material and size is the aluminium bonnet.”
https://www.whichcar.com.au/features/anatomy-of-the-zb-inside-holdens-latest-commodore-supercar
Back to the real world of HDT Group C Commodore race cars, I am intensely curious as to how close to stock they were. There is heaps of info on a number of forums about the engine specifications but very little on the suspension, steering or brakes so I genuflect before the assembled experts of this forum and pose the following questions -
Control arms: Stock or adjustable heim jointed?
Front struts: Bilstein
Steering: Stock rack and pinion?
Brake Callipers: Stock? Harrop? Piston number?
Thank you for taking time to read this and I look forward to your answers.
Just lately I have been really enjoying watching old recordings of Bathurst and ATCC both Group C and A on youtube. The racing is fantastic, watching the cars circulate on bouncy tracks, with distinctly more body roll and suspension travel that a modern supercar. It is a joy to watch Brock in an Aussie V8 Commodore clearly out drive every body else.
I was an avid supercar spectator, up until the COTF rules came into place. Racing on billiard table smooth tracks with such taught, exotic suspension minimising any pitch, roll or yaw, I started to lose interest.
Reading an article on how supercars are constructed further degraded my enthusiasm. To quote,
“The bodies have to be moulded to fit the 2822mm wheelbase, the defined engine location, suspension points, front undertray position and rollcage. Not the other way around.”
“The only exterior panel of the ZB racer that is original material and size is the aluminium bonnet.”
https://www.whichcar.com.au/features/anatomy-of-the-zb-inside-holdens-latest-commodore-supercar
Back to the real world of HDT Group C Commodore race cars, I am intensely curious as to how close to stock they were. There is heaps of info on a number of forums about the engine specifications but very little on the suspension, steering or brakes so I genuflect before the assembled experts of this forum and pose the following questions -
Control arms: Stock or adjustable heim jointed?
Front struts: Bilstein
Steering: Stock rack and pinion?
Brake Callipers: Stock? Harrop? Piston number?
Thank you for taking time to read this and I look forward to your answers.