Front Right Suspension Thunk?
#1
Racer
Thread Starter
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I've done the wheel bearings very recently, and I can't wiggle the suspension at all, but I get a thunk from my front right side when I hit the brakes for the first time driving the car. I have recently bled and checked my brakes so I don't think it's the caliper. Once moving I never hear it again, only first thing after sitting. Anyone else had this or have any insight before I go replacing parts? Car has KW V3 coils and shocks. Car drives and brakes straight and gets spirited use regularly.
Thanks!
1987 Guards Red 951
Thanks!
1987 Guards Red 951
#4
Racer
Thread Starter
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I put in Lindsey ultra mounts a few months ago, but I will check their torque, and look at the steering rack bushings. And also see if I can knock it about a bit at the autocross Sunday and narrow it down.
#6
Drifting
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In addition to the above checks, could be a brake pad moving in the caliper. Try backing up and applying the brakes, then going forward and lightly apply the brakes. If you hear a thunk, it's like the pad moving around.
#7
Racer
Thread Starter
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If it is the pad moving in the caliper does that mean pad replacement or I just messed something up when reinstalling them? I will also check all the suspension bolts.
Thanks!
Thanks!
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#8
Drifting
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Usually it's due to the backing plate being slightly too small. You may have switched pad location and the tolerances between a backing plate and caliper are now just enough to allow for pad movement.
#9
Racer
Thread Starter
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Ok I think it's def the pad moving, when I back and forth I can hear it hit the calipers, but once it's been set in one direction it doesn't reoccur. I took the pads out, cleaned and inspected but they seem fine, and the caliper is good and tight, as well as the rest of the suspension.
Is there a way to correct this (obvs I'll need new high end pads, for safety)?
Is there a way to correct this (obvs I'll need new high end pads, for safety)?
#10
Rennlist Member
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Ok I think it's def the pad moving, when I back and forth I can hear it hit the calipers, but once it's been set in one direction it doesn't reoccur. I took the pads out, cleaned and inspected but they seem fine, and the caliper is good and tight, as well as the rest of the suspension.
Is there a way to correct this (obvs I'll need new high end pads, for safety)?
Is there a way to correct this (obvs I'll need new high end pads, for safety)?
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#11
Racer
Thread Starter
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Before my last autocross I removed the pads, cleaned them off, cleaned up the caliper again and put them back in. The clunk is much reduced if I hear it at all and nothing looked weird in there, so I will continue to drive it hard and see if anything breaks. Thanks for the input all!