Front end Clunk/Pop help
Thread Starter
Burning Brakes
Joined: Jun 2013
Posts: 1,186
Likes: 16
From: Orlando Fl
Front end Clunk/Pop help
My set up is stock z06 wheels with new 275/40/17 on the front. The car is lowered with front bolts removed. Leaf spring is sitting on lower A arm and has been lowered about 1000 miles. The noise occurs at very slow speed at 90% or more wheel turn, such as parking or backing out of spots. There is no noise over bumps or hard turns of any kind. Car runs very smooth other wise at least for a lowered vette. I really noticed the noise after the new tires 200 miles ago and it doesn't change whether on smooth of rough surface. I dont think its the tires pushing as it sounds the same even on very smooth concrete. The pop is such that I can feel it in my feet either through the floor board or the pedals. I was thinking end links but they dont make noise over bumps or breaking. could the leaf on the bare A-arm be causing this. Any other ideas? Id like to get a few thoughts before I put the car in the air. Also all lugs are tight.
Race Director
Joined: May 2012
Posts: 15,758
Likes: 3,277
From: Phoenix area, AZ
My set up is stock z06 wheels with new 275/40/17 on the front. The car is lowered with front bolts removed. Leaf spring is sitting on lower A arm and has been lowered about 1000 miles. The noise occurs at very slow speed at 90% or more wheel turn, such as parking or backing out of spots. There is no noise over bumps or hard turns of any kind. Car runs very smooth other wise at least for a lowered vette. I really noticed the noise after the new tires 200 miles ago and it doesn't change whether on smooth of rough surface. I dont think its the tires pushing as it sounds the same even on very smooth concrete. The pop is such that I can feel it in my feet either through the floor board or the pedals. I was thinking end links but they dont make noise over bumps or breaking. could the leaf on the bare A-arm be causing this. Any other ideas? Id like to get a few thoughts before I put the car in the air. Also all lugs are tight.
Melting Slicks
Joined: Jul 2013
Posts: 2,012
Likes: 23
From: Anaheim CA
Race Director
Joined: May 2012
Posts: 15,758
Likes: 3,277
From: Phoenix area, AZ
Thread Starter
Burning Brakes
Joined: Jun 2013
Posts: 1,186
Likes: 16
From: Orlando Fl
Update
So I put the car in the air and shook the hell out of the suspension and checked all parts loosened or removed when it was lowered, No noise no movement. There was evidence of tire rub on the back side of the lower a arm on both sides. Sine it was in the air I inserted two pieces of 4 ply silicone coupling I have laying around under the leaf spring and lower a arm and gave it a squirt of chain lube. I lowered the car back down and the noise is gone. Now I just have to wait until it settles back down to see if it stays gone or if the noise in in fact the tire rubbing on full turn.
Ill update later tonight as I have a 60 mile trip ahead of me. I suspect the tire since it is larger than stock and that's when I noticed the a few days after the tire install
Ill update later tonight as I have a 60 mile trip ahead of me. I suspect the tire since it is larger than stock and that's when I noticed the a few days after the tire install
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Thread Starter
Burning Brakes
Joined: Jun 2013
Posts: 1,186
Likes: 16
From: Orlando Fl
After 90 miles and the suspension appearing to be settled the noise is 100 % gone. I can only assume it was the leaf spring making some noise on the bare metal. I know not everyone that removes their lowering bolts get this but for those who are be aware you might and to put something between with some grease just to be safe.
Drifting
Joined: Oct 2008
Posts: 1,595
Likes: 191
From: Wilmington DE
After 90 miles and the suspension appearing to be settled the noise is 100 % gone. I can only assume it was the leaf spring making some noise on the bare metal. I know not everyone that removes their lowering bolts get this but for those who are be aware you might and to put something between with some grease just to be safe.
