Jump to content
SAU Community

Recommended Posts

hi guys,

funny noise appears but only when i go over a sudden bump (regardless of speed) i can be doing 10km/h or 60km/h & a little divit in the road will set it off - sounds like a thump "DOOMP" when it happens.

what can i check? ive got it jacked up so i can go over all of the nuts & bolts...maybe its a worn bush?

Link to comment
https://www.sau.com.au/forums/topic/209215-front-end-knock-over-bumps/
Share on other sites

Could be the wooden board in that back of ya boot (The one sitting on top of ya spare tyre in the boot under the carpet), if not, do you have aftermarket suspension? Could be the shocks / springs 'rebounding' as the car bounces up and down.

I also have a knock sound but mine sounds like it is coming from the rear of the car. It happens over sharp bumps but is also very bad when turning Left over bumpy road but not when i turn right which is funny. It also keeps clunking over bumps not just one clunk. I also got a $14 28 point suspension safety check done and pedders could not find anything either. it is Like a rattle hopefully i can find it and if any one has any ideas let me know because it is driving me INSANE!!!!!

Peter

i just found the front end knock - after checking & confirming all nuts are tight i then jiggled the front wheels whilst on the jack, the noise is from the top arm where it mounts to the inside of the strut tower.

i can actually hear the noise from the top & see it move back/forth a couple of mm (when it should only move up/down)

hopefully this helps anyone else out there - now where should i get these bushings that sit in the top arm?

^^Sounds like you might need a new CV joint Boot / Cover...?

Did you check out ya tyre / caster rods? And I think there is one more rod, can't remember the name, LOL!

Check all around that area and see how you go...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Depending on the purpose of the car, and how much more fabbing you want to do, and what clearances you have, you could look to raise the motor, which will raise the front diff up. Likely would mean altering the chassis rails etc etc, hence the more fab work you'd need to do. However, this can create issues, not just in clearance with everything fitting under the bonnet, but you've also raised a LOT of weight up in the car, and this will DEFINITELY alter handling characteristics (But, so will how much weight you've already added to the front end). You'll also have to deal with the fact the gearbox to rear diff is now out of alignment too for the tail shaft, and alter the angle of the diff, or deal with a bit of potential vibration. Raising the motor an inch up, is effectively the same as making the whole car sit higher by not lowering it as far. So one inch higher motor, theoretically means you can drop the car an extra inch lower, and maintain the same angles in the CVs. Again, depends on the purpose of the car. If it's a just cruiser on the street car, maybe won't be an issue. If it's meant to be a time attack car, I can see you not wanting to raise the motor. This is just for you to ponder as an idea.
    • Have you not seen geospy.ai? It can now give GPS co ords to within a metre from a photo, even if it's a random photo you take inside. Supposedly at the moment only the government/law enforcement has access to that... Supposedly...
    • I've got the rear ones, they're certainly beefy. I need to take them to my driveshaft guru to check over, he's very fussy about the quality of components so I'll let you know if they are made of cheese by a blind man.   Are you in Australia? A mate just had a set of EN26 shafts made for his K20 Lotus by our fabricator which were quite cheap (compared to Driveshaft Shop) so if you can procure the CV's and draw what you need he'd make them for ~$800 for the pair.
    • Had I known the diff between R32 and R33 suspension I would have R33 suspension. That ship has sailed so I'm doing my best to replicate a drop spindle without spending $4k on a Billet one.
    • OEM suspension starts to bind as soon as the car gets away from stock height. I locked in the caster and camber before cutting off the kingpin. I then let the upright down in a natural (unbound) state before re-attaching it. Now it moves freely in bump and droop relative to the new ride height. My plan is to add GKTech arms before the car is finished so I can dial camber and caster further. It will be fine. This isn't rocket science. Caster looks good, camber is good, upper arm doesn't cause crazy gain and it is now closer to the stock angle and bump steer checks out. Send it.
×
×
  • Create New...