Save me from the infernal clunk!

hazards280

New member
Okay guys, I bought my 4Runner TRD OR Premium on November 6th (I believe), and since then I've done quite a bit of stuff to the rig. I'm coming from a Wrangler Rubicon X with 37s and a bunch of other jazz, but sold it due to the lack of practicality. The 4Runner really hit the sweet spot with it's body on frame build, lack of "bro" status (Wrangler :faint:), and excellent resale value.

Let me start by saying that I absolutely love this 4Runner. I figured I would wait and see exactly how much before I put thousands of dollars into it, and well...you can see how quickly that changed.

  • BP-51 Front Coiloverand Rear Shocks
  • OME 889 Coils
  • Sway Bar Relocation Brackets
  • CORRECT - Lower Radiator Support Bracket from ARB (See Link Below)
  • 275/70R17 KO2s

(see http://www.toyota-4runner.org/5th-gen-t4rs/245902-arb-sway-bar-rub-fix-bp-51-fit-kit.html).

Also, yes, I've read through the 27 threads about clunks in the front suspension of the 5th gen, but it appears people just settle with the clunk. In a set-up that I've now spent $45,000 dollars on, I can't quite let this fly.

The 4Runner had ~1,100 miles on it when the lift was installed and I've had this damn clunking sound in the front end at low speeds ever since. I am way to obsessive about sounds and squeaks and this is absolutely, positively driving me insane. :ybrick:

The sounds can be heard at low speed driving through a parking lot or even at high speeds if I hit a hard enough bump in the road. It sounds like I have something seriously loose down there, but I have checked everything I can think of. It's so loud inside that it's almost embarrassing to drive through a parking lot with people around. It sounds like it's coming from the front right wheel, but it's somewhat hard to tell.

Things I've checked
  • Upper and lower bolts on the coilover
  • sway bar end links top and bottom
  • sway bar relocation bracket saddles (tightened to spec) and lubed
  • checked clearanace in and around the sway bar
  • verified clearance between UCA and coils

If I can't figure this out, I am at the point of walking into a dealership, handing the tech a couple hundred dollars and saying find the son of b***h. :gun5:

Thoughts?
 
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I can almost guarantee it is your shocks. I have the BP-51 as well, and got a clunking/dull chatter on the front over small undulations at low to mid-speed. It gets significantly worse in cold weather as well.

Fortunately, ARB has been replacing them on warranty with an updated version. I just got mine ordered under warranty through Toytec, the distributor I originally purchased them through. Just be sure to confirm you are getting the latest version of the shocks. The clunking for me has been 100% eliminated, it is a night and day difference in noise. Got rid of the only flaw in this suspension setup, other than that it has been perfect.
 
Update: I just got off the phone with Eric from ARB and I have to say...I'm impressed. He was very knowledgable of the platform and was completely understanding of my concerns. I provided all of the details to him and he was quick to help me out.

He said that there was a change to the BP-51s a few months back in relation to some issues they had with "hydro"...something. (sorry I can't remember), but regardless this has since been fixed. I gave him the serial numbers off the boxes for my front coilovers and he said that my right coilover would have been after the fix had already taken place, but the left was right on the line.

We talked about where I got the lift from and I told him that I had some issues with the front mount kit that shipped to me from ToyTec being the wrong version for the 4Runner (008 versus 028). From what I was told, the only difference between the two was that the 028 came with the ARB lower drop bracket. He informed me that I was actually wrong, and that the front right resi mount was actually changed (slightly) due to the fact that the mount would make contact with the power steering pump pressure switch when the engine shifted. I took a look and sure as s**t, I had contact! Below is a picture of the damage to the bracket over the past 400 miles.

He told me that I can fix the bracket that I have by drilling new holes in the mount about 15mm forward so the bracket is close to the front of the vehicle. We'll have to see how that goes, but from the sounds of it this should correct my issue.

He told me that if the problem persists, that I should call back and ask for him so he can help me further. :cheer2:

More to come!

<a href="https://ibb.co/cUq3cw"><img src="https://preview.ibb.co/k45rVG/20171211_200230.jpg" alt="20171211_200230" border="0"></a><br /><a target='_blank' href='https://imgbb.com/'>upload an album</a><br />
 

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