Hello all,
During a trackday training day i went backwards over a ripple strip and heard a massive bang underneath the car. Assumed I smashed the dump pipe on the ripple strip. Turned back around and kept on driving as normal. Everything seemed to be fine till the end of the day.
When driving back i noticed a constant thud noise coming from the car when Im over 80km/h.
It sounds like a flat spot or buckled rim; *thud* *thud* *thud*. From 80kmh+ the sound is quite noticeable.
Clutch in; Sound still there
Clutch in, neutral, clutch out, rolling at speeds above 80km/h sound still present.
This would mean its related to suspension, diff, tyres, rims, tailshaft?
Wheels have been balanced and aligned. Rims have been checked for any buckling and seem fine.
The kicker is that the thud sound comes and goes! If i drive up to the city, the thud noise is quite loud. However, after a couple of hours and driving back the sound is completely gone! Its hard to replicate it to any mechanic as it seems to come and go and Im not sure why
Any help would be greatly appreciated.
Might chuck on a set of stockies for a week and see if i can still hear/feel it. That would eliminate tyres/rims as being the problem.
Thanks all...