noisy sway bar

[Jean-Marc]

During a first test on track, I eard a noise coming from the front, a "clong" in relation with the track irregularities, on my RCR GT40.
Part of the noise may come from the steering column but moreover it seems related to the front sway bar.
The bushings are only aluminum brackets, no polyurethane inside. I suppose it is to get a better guiding, should I leave it as this or should I machine the interior to but a polyurethane bushing ?

 

[Chris Kouba]

How tall are your springs and are you running a lift kit? Pasha recently had a noise on his RCR:

R

Thread 'RCR40 Clunking in Floorboard/Pedal Box Area'

Jan 21, 2026

I have noticed when rolling the car at pretty much any speed there is a "clunking" that you can feel with your feet in the pedal box area. Yesterday my passenger felt it as well in the other seat. All wheel suspension components are confirmed to be firmly secure and I wonder if it could be the sheet aluminum floor flexing?

Anyone experienced something similar and what was the remedy?

• Ragtime Kid
• Replies: 17
• Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels

Otherwise, may I recommend more Loud Pedal?

 

[Jean-Marc]

Hello Chris, I am sure that the noise is coming from the sway bar, because when I lift the car and move the wheel suspended, I clearly ear the same noise.
I do not use a lift kit, and I have spring helper on top of the coil over