BC Racing coilovers (problem)

stefan · Post by **stefan** » Thu Feb 11, 2016 10:48 pm

Hi guys. Just wanna ask, because maybe some of you had a same problem .

I've got BC Racing (BR Series) coilovers on my fifth gen. Since i installed them, i hear terrible annoying knocking on rear suspension.

All ball joints are good, all bushings are new (poly), anti roll bars and bushes are new.

Also i removed 4ws.Is nothing there, what can make a knocking, apart something wrong with coilovers.

Did anyone had a same problem and know how to fix it

Thanks for help.

YouTube · Post by **Sailor** » Thu Feb 11, 2016 10:52 pm

I have BCs on my Integra. I'm very happy with them.

Have you tried adjusting them to see if there's any difference?

mercutio · Post by **mercutio** » Thu Feb 11, 2016 10:53 pm

shock knock or droplinks?

stefan · Post by **stefan** » Thu Feb 11, 2016 11:01 pm

Sailor wrote:Have you tried adjusting them to see if there's any difference?

Yes, it given nothing

mercutio wrote:shock knock or droplinks?

Drop Links are new (delphi) Is really nothing there, everything is new. And i heard knocking just after i change oem shocks for coilovers

Andreika609 · Post by **Andreika609** » Thu Feb 11, 2016 11:15 pm

Top mounts bolts tightened? And strut top bolt. Also yhere is bearings on top mounts or rubber bushes?

Post by **NafemanNathan** » Thu Feb 11, 2016 11:30 pm

Is it a pretty constant knocking or just over bumps? And how low did you go?

Also I have to ask, have you had the tracking done since?

stefan · Post by **stefan** » Fri Feb 12, 2016 12:53 am

Andreika609 wrote:Top mounts bolts tightened?

Yes

Andreika609 wrote:And strut top bolt. Also yhere is bearings on top mounts or rubber bushes?

I've no idea. It came complete, just to fit on the car, i didn't check any bolts

NafemanNathan wrote:Is it a pretty constant knocking or just over bumps?

I hear that all the time, don't need any bumps

NafemanNathan wrote:And how low did you go?

about 6cm

NafemanNathan wrote:Also I have to ask, have you had the tracking done since?

Sorry but i'm not really sure what you mean

I was tried to find what make this noise, hundreds times (each time i drive somewhere) and nothing. It's not changing at all, it's same knocking for over 6 month. Also i thought, maybe that brakes pads( you know, sometimes they get loose) but when i push brake pedal and slowing down, it still happen

Post by **JEBB4** » Fri Feb 12, 2016 3:50 am

Were the coil overs used when you bought them? Check the condition of the shock as they will show signs of pitting on the "piston rod" (chrome part that goes up and down in shock body) if they are in bad shape can cause wear and play in shock which causes a knocking.

If I was you I'd go over every nut and bolt on the rear suspension checking there all tight..

Seams everything has been apart so lots of room for error..

106pete · Post by **106pete** » Fri Feb 12, 2016 6:36 am

I looked at a set of these for a guy with a type s. I found if you jacked up the rear you can try to lift one wheel and there's a definite gap in the shock that moves with the piston as you move the wheel up and down.

The guy had them professionally installed at a garage and no amount of adjusting the settings would clear the noise, imo it was a manufacturer defect like not enough oil or something loose inside. I don't think they ever came to a solution but maybe worth trying lifting the wheel with the car jacked up.

haRRibo929 · Post by **haRRibo929** » Fri Feb 12, 2016 6:40 am

is this knocking sound like metal to metal?

just check the tightening of stabilizing rods , they can do veery bad noise