BC Racing NA- Separate Spring and Shock Preload

[@ToWi1989]

Ah, so it's quite simple. Make sure your dampner is extended to its max. throughout the install. So after removing your stock spring and dampner, these are the steps: 1: Mount the top side of the dampner to the car. 2: Put in the spring (+adjustment collar), and use a jack to raise the suspension to remove the slack from the spring (touching top and bottom spring seats). 3: From this setting, you raise the suspension with the jack 7-10mm to add the preload (measured at the spring!). 4: You then adjust the height of the dampner untill the hole matches up with the mounting hole. Now the spring is locked in place by the dampner, so it cannot pop out if your wheel looses contact with the road. 5: Fix the lower dampner bolt to the suspension. Things might vary slightly on the type of suspension (for a fixed rear axle it might be best to setup 1 side, and to measure the setting of the lowering collar, and the length of the dampner and just copy it to the other side). This procedure is always the same no matter what ride height you use (this is set with the collars above the spring). The only thing what you do with a different ride height is to readjust the dampner length to keep the corect pretention.

[@kalbi777]

thanks explained better than the manual

[@full_metal2452]

I believe this answers the question I've been searching for. I just installed Function Form type 1 coilovers on my MK4 VW GTI and was trying to figure bout rear shock preload.

[@lexmichael2040]

damn Boss I might cry now😭 been looking for a video regarding this and found out your explanation too😭 I might adjust the ride height and pre load tomorrow, thanks a lot

[@giant23]

Couldn't focus on the video bc of the music thanks for the explanation

[@laserman4253]

thank you

[@rafaelhernandez179]

a video showing how to adjust height on rear with a seperate spring and shock would be a blessing. Still don't know how.

[@impulse_media]

Glad I found an adjustment tutorial for a separate setup, this is how my AE86 came.

[@jamestaylor7045]

how does this work for e36 rear suspension as the bolt that holds the control arm is what the shock connects to

[@JustinsSoapbox]

Someone at BC is directing customers to this video in response to complaints about ride height that's too low in the rear with their coilovers even with the spring adjusters set to max height. He's saying this process will fix that. It won't. The point of this procedure is to make sure the damper tops out before the spring is fully unloaded, so that there's always a little compression on the spring to keep it in place. That's necessary because you don't want your spring to be able to fall out of place when the suspension unloads. Shortening the damper body further past that point will trade droop travel for bump travel, which is also fine where necessary. What this procedure won't do is affect ride height. Yes, adding preload this way will reduce how much the spring compresses when the car is on the ground - but it'll do that by pulling the control arm up by an equal amount, so in terms of ride height you'll be back where you started. If the spring adjuster is maxed out, your ride height is maxed out. No way to fix that by adjusting the damper length. So, if you're too low with the spring adjuster maxed out, either your install is messed up or the kit is.

[@MoneypitV606]

Have been scratching my head on rear height adjustment on my cts-v. Came to the conclusion I probably just need smaller tires

[@zoom_shields]

very helpful, thanks

[@bklynxsnoopee]

Do you have a video of how to adjust the height for this rear coilover setup?..

[@ripkobexnip3719]

How do u adjust the rear I wanna go lower

[@its__abraham]

Remove the spring and adjust it

[@rafaelhernandez179]

@@its__abraham which perch do we turn to what side?

[@its__abraham]

@@rafaelhernandez179 spring perch only, I can't remember which direction but just loosen the top ring and twist the bottom one

[@Woom88]

A video including how to adjust ride height in this setup would be helpful also.. Everyone on the KZbin change the ride height in rear bc coilovers like this one, in a different way... Which is the right one??

[@aafaqvirk384]

Did you figure it out?

[@rafaelhernandez179]

yes, still not sure how to adjust height and what perch to turn what side???? lol

[@1993Revhead]

Would this explain the knocking noise in my rear end, especially a day after I had them put in?

[@armeniocavaco]

i had same problem

[@anothey93]

Zachary Burrows yes too little preload caused knocking my my cars rear suspension as well, added a bit more and it’s all good.

[@ThruDaLenz]

ok so after you set your your spring length. you will set the preload by compressing the spring 7-10mm with control arm and then locking the preload settting by adjusting the shock height to fit the control arm bolt while the spring is compressed 7-10mm... ok got it thank u

[@vRaaltuh]

I got the V1 series for my alfa gtv, the damper that came with the set cant be adjusted in height, how do i set it up?????

[@johnhhu2137]

more suspension setting tutorials?

[@bamudeadson]

so on my BCs, I adjusted the shock until the threads bottomed out, but it still seems to ride pretty high, I even adjusted the preload and no difference. I was able to twist the shock and lower the spring without removing anything tho?

[@jarodlozano3555]

I had a shop lower the rear for me, but I don't think they did it properly. I think they just adjusted the springs and did not adjust the dampner. Is there a way I could prove this?

[@winking2928]

So if I need to raise my car, I just need to adjust the springs. Do I have to touch the shock length? And is there an easier way to do this? Thnx(“0”)

[@aafaqvirk384]

Did you figure it out?

[@thormx47]

If you adjust the coil from the factory set point 1/2” lower, can you just lower the strut a 1/2” as well?

[@abu9669]

so no one explains what preload is and how to get these measurments, thanks

[@cyberrr9489]

Hi, do you have to adjust the shock length everytime you change the height setting?

[@LochnessMonstaa]

Yes

[@lexmichael2040]

If I want to go up the ride height Which do I need to adjust? the spring perch or the shocks?

[@its__abraham]

Spring

[@DomerSimpsn]

@@its__abraham true but don’t you have to redo preload and move the strut again regardless of lowering or raising?

[@ripkobexnip3719]

If I wanna go lower what do I do?

[@stanleysgill]

On the separate spring Shock set up, which do you adjust for height... How?

[@steezmuffin686]

you use the collar on the rear spring for height....and then follow the rest of the video for the preload...from my understanding.

[@1993Revhead]

The spring perch

[@Dnasty1]

What is the maximum amount of thread you can use for raising the car? Can you take it all the way to the end?

[@dumbeezy5480]

Should be on the instructions if you bought them. You gotta have a certain amount of threads.

[@chrisrosanio9459]

My shock body is bottomed out and I still am not able to get any preload on my springs, any suggestions?

[@LochnessMonstaa]

You can't compress the strut to get the bolt into the control arm?

[@chrisrosanio9459]

@@LochnessMonstaa yeah but then the strut just extends back down hahaha

[@straightupgutta]

@@chrisrosanio9459 ya cause the shock body length is maxed out. I had that problem with the skunk2 pro s coilovers. Shitty design. You need a shock that can shorten far enough to lock a compressed spring in place.

[@ajjimenez1765]

Sid Cole that’s why you get the extreme low kind and not the regular BR model

[@rollerchester1]

Can I adjust the preload without removing the strut itself? I mean by just loosing the perch and turn the whole strut to increase or decrease preload.

[@lexmichael2040]

if you did that the ride height gonna change and you need to unbolt the shocks on control arm to match it on the perch

[@brandondub242]

@@lexmichael2040 I still so confused. How do I just adjust ride height? is it from the spring collars or the shock?

[@lexmichael2040]

Brandon DUB adjust it on the collar on the springs, max out low means the 2collar need to be max on top of the spring perch, adjusting it to go high tide height are kinda tricky cause the distance on collar from the Pearce doesn’t mean is the same distance of your wheels on the fender so you might start from one inch distance from collar to perch then install back wheels and see there where you want the gap of wheels from fender.

[@brandondub242]

@@lexmichael2040 Ok thank you.

[@KidsInYourPool]

I have no idea where from in/on the rear spring to measure the preload? Is it from the spring to the bottom perch(or which ever is it's proper name). And does it vary from how low you have the car?

[@KidsInYourPool]

It really wasn't specified in the video, may sound like a stupid question but that's the only reason why I'm asking. The tape is being measured in the same spot, and from which two points exactly, since it's less than an inch of preload :s

[@silentperformance]

+Stiff Johnson From what it looks like you are measuring the area the spring is in. So your measuring either the spring and perch or just the spring. It's your choice, just make all your measurements from the same place.

[@lexmichael2040]

you have to measure the top and the bottome spring itself the perch is to adjust ride height.

[@armeniocavaco]

hello. i have those installed and i need to put the car higher. in the front is easy, you dont change the pre tension on the spring but in the rear how do you adjust the ride height?

[@anothey93]

Arménio Barão ride height is adjusted by the springs in the rear, not by the shock length.

[@HBZTwistaOk]

i swear i did this..and its still bouncy T__T

[@brendenbanks9293]

pre-load makes bounce worse... add more rebound.

[@imadude85]

@@brendenbanks9293 what can i do to reduce bounce if my strut does not have rebound setting, only damping?

[@brendenbanks9293]

@@imadude85 I suggest you do some more google. Rebound is a type of damping...

[@Vincevega1720]

I hate the music

[@lexmichael2040]

if I want to go up my ride height which do I need to adjust? the shock or the spring perch?

[@gomezea2]

both