Weird sound after HKS spring install.

[Shifty]

Installed my HKS Hipermax adjustable springs. Took it for a test drive and I hear this weird light pop or thump sound from the driver side rear. Everything is tight and torqued. And the sound only happens when hitting a dip or level change in the road.
Is this normal?

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[Kolme]

Did you use spring silencers for coil slap?

 

[2021Supra]

I second that. Use the above the silencers around the coil.

 

[Shifty]

Did you use spring silencers for coil slap?

Yeah I added the silencers on the spots where it said to. If that’s what it is and I have nothing to worry about I’ll just turn the music up then.

 

[Kolme]

Yeah I added the silencers on the spots where it said to. If that’s what it is and I have nothing to worry about I’ll just turn the music up then.

Hmm. That should honestly stop the problem if it’s caused by coil slap. Maybe make sure they’re properly positioned? Shouldn’t need to play music to stop the annoyance lol.

 

[Tacoma714]

Yeah I added the silencers on the spots where it said to. If that’s what it is and I have nothing to worry about I’ll just turn the music up then.

Is it like a popping noise only when you are turning at slow speeds?

 

[Thraxbert]

https://www.supramkv.com/threads/so...with-lowering-springs-on-the-mkv-supra.10852/

Add more.

 

[Shifty]

Is it like a popping noise only when you are turning at slow speeds?

No, just whenever I hit a bump or level change in the road. Gonna take the wheels off tomorrow and double check everything

 

[Shifty]

https://www.supramkv.com/threads/so...with-lowering-springs-on-the-mkv-supra.10852/

Add more.

Hey man, thanks for this. I’ll try the isolators method and add more. Hopefully that helps, but after a second drive something felt weird. I don’t know, maybe I need to upgrade the rest of the suspension around the springs to get everything working as one.

 

[Thraxbert]

You shouldn't need to add or change anything else in the rear. It's also possible that the springs are not aligned correctly to the perches, which causes them to twist.

 

[Shifty]

You shouldn't need to add or change anything else in the rear. It's also possible that the springs are not aligned correctly to the perches, which causes them to twist.

When you guys say not aligned correctly. Do you mean not seated properly? I do all my own installs so I’m trying to figure this out. I’ve installed springs and coilovers in the past, but this is new to me.

 

[Shifty]

You shouldn't need to add or change anything else in the rear. It's also possible that the springs are not aligned correctly to the perches, which causes them to twist.

I’m an idiot, I read what you said too fast. By perches do you mean the bottom where they set?

 

[Thraxbert]

I’m an idiot, I read what you said too fast. By perches do you mean the bottom where they set?

Correct. The rubber perches ("discs") that the springs sit in/on. They are specifically molded to abut the end of the spring coils, and it's easy to to have the springs not totally snug in those perches. This will allow the spring to rotate in the seat, which causes popping.

 

[Shifty]

Correct. The rubber perches ("discs") that the springs sit in/on. They are specifically molded to abut the end of the spring coils, and it's easy to to have the springs not totally snug in those perches. This will allow the spring to rotate in the seat, which causes popping.

Gotcha, I’ll be honest that part of the install was a little tough because I couldn’t tell if I set it or not. I didn’t know I needed to twist it in or something. I’ll try messing with it tomorrow.

thank you

 

[Shifty]

Correct. The rubber perches ("discs") that the springs sit in/on. They are specifically molded to abut the end of the spring coils, and it's easy to to have the springs not totally snug in those perches. This will allow the spring to rotate in the seat, which causes popping.

tried uploading a short video. Said it was too large. But this looks seated to me unless I’m wrong.

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