Attention All BC Racing Coilover Guys, Check your Rears--Possible Install Error...
#136
Registered Member
iTrader: (3)
I also installed the same day as finagale and I have the rattle noise when going over bumpy road. It sounds as if the shock is rattling rather than the spring. I dont know much about the inside of the shock, but i expect it has some sort of bump stop. So tomorrow I will lengthen the shock so that at full extension it is not reaching the internal stops.
I hear rattling noises like an old shock on an old car within the cabin coming from the rear, this works when I have passangers and without. I tired the dampining at 8 from hard to all the way soft. Now the extender is jammed and I cannot turn it!
I will write back if adjusting the shock independent of the spring works tomorrow...
I hear rattling noises like an old shock on an old car within the cabin coming from the rear, this works when I have passangers and without. I tired the dampining at 8 from hard to all the way soft. Now the extender is jammed and I cannot turn it!
I will write back if adjusting the shock independent of the spring works tomorrow...
#138
You can check mine out this coming weekend or next if Sharif dont fix it... ill be in ATL at forged...
I raised my fronts yesturday for my AutoX today.... i measure before from the fender and the fronts were 25 5/8s and 25 7/8s .... WTF was I doing driving it that low... STUPIDDDD....lol
Raised it up at least a 1/2 an inch and its MUCH BETTER...
I wanna mess with the rears but id like to wait on Pete to see what he can figure out....
I raised my fronts yesturday for my AutoX today.... i measure before from the fender and the fronts were 25 5/8s and 25 7/8s .... WTF was I doing driving it that low... STUPIDDDD....lol
Raised it up at least a 1/2 an inch and its MUCH BETTER...
I wanna mess with the rears but id like to wait on Pete to see what he can figure out....
#139
Registered Member
iTrader: (3)
Ok, so I messed with my rear today by inceasing the spring height a couple of 8ths of an inch from before and also raising my rear strut up. I found that the collar on the strut WAS NOT tight, i could undo it by hand! So now all collars on the rear are tight as well as the 2 nuts on the top of the strut. With the small change in incrasing the length of the strut, I hear like 80% less rattle than before. I will leave the spring alone now and raise the strut some more and see if i can hear it.
Now only when i am at slow speeds do i hear the rattle in the rear. It rattles more when i go over rough roads at a slow speed, and not at all on rough road on the freeway.
I had to cut a hole to access the strut tower by finger in the rear right of the car, it's about the size of a small apple... but now i can actually adjust it!
Anyway i hope to eliminate the sound by raising the strut a little higher. Anyone else try this?
Now only when i am at slow speeds do i hear the rattle in the rear. It rattles more when i go over rough roads at a slow speed, and not at all on rough road on the freeway.
I had to cut a hole to access the strut tower by finger in the rear right of the car, it's about the size of a small apple... but now i can actually adjust it!
Anyway i hope to eliminate the sound by raising the strut a little higher. Anyone else try this?
#143
You can check mine out this coming weekend or next if Sharif dont fix it... ill be in ATL at forged...
I raised my fronts yesturday for my AutoX today.... i measure before from the fender and the fronts were 25 5/8s and 25 7/8s .... WTF was I doing driving it that low... STUPIDDDD....lol
Raised it up at least a 1/2 an inch and its MUCH BETTER...
I wanna mess with the rears but id like to wait on Pete to see what he can figure out....
I raised my fronts yesturday for my AutoX today.... i measure before from the fender and the fronts were 25 5/8s and 25 7/8s .... WTF was I doing driving it that low... STUPIDDDD....lol
Raised it up at least a 1/2 an inch and its MUCH BETTER...
I wanna mess with the rears but id like to wait on Pete to see what he can figure out....
#145
Max, did you have this noise since the 1st day? If not, i'd say it's attributed to the springs settling and I would suggest to go back to the rear spring and shock assembly and try the install write up to assure it hasn't settled to much and is loose.
#148
Registered User
iTrader: (3)
My rattle's getting worse over here. Anyone think it could have something to do with the rubber sock? When I look at mine, sometimes the sock is pushed so far onto the cylinder that it covers the two air holes, which doesn't allow the sock to compress and decompress easily.
#149
I really need to know if the instructions are being read carefully. Rattles come 99% of the time when springs are not preloaded. It is harder to do on the indepent rear setup as on the g's and z's. But the instructions will show how it is done. When you place the jack under the spring arm and or the hub, it will put a preload on the spring. The shock needs to be adjusted to where full extension of the shock reaches the lower mount bolt. Once bolted the shock would hold the springs preload. If this is not done properly. The rear end when hitting a dip and rebounds to full extension, the springs would be loose and rattle. I've seen one post specific that seems this to be the issue. I'll look for it and use it as reference. I'd like to meet with maxg37 and the other customer close to him. I'm hoping that it is a simple fix, but I'd be dissappointed to go traveling to another state and find that the instructions would have fixed the issue.
#150
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Join Date: Sep 2005
Location: Augusta, GA
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I really need to know if the instructions are being read carefully. Rattles come 99% of the time when springs are not preloaded. It is harder to do on the indepent rear setup as on the g's and z's. But the instructions will show how it is done. When you place the jack under the spring arm and or the hub, it will put a preload on the spring. The shock needs to be adjusted to where full extension of the shock reaches the lower mount bolt. Once bolted the shock would hold the springs preload. If this is not done properly. The rear end when hitting a dip and rebounds to full extension, the springs would be loose and rattle. I've seen one post specific that seems this to be the issue. I'll look for it and use it as reference. I'd like to meet with maxg37 and the other customer close to him. I'm hoping that it is a simple fix, but I'd be dissappointed to go traveling to another state and find that the instructions would have fixed the issue.
can you give us a measurement on the rear shock to compare to?
i adjusted mine to match the length of the oem shock when I installed
if i remember right, my measurement from the bottom of the top mount to the top of the bottom hole was 20 & 1/16" i could be wrong though
i've been without my car for the past 3 weeks though, I'll take a look at it again when I get it back