MyE28.com DEV

Ordered my set of BC's. They arrive on september 4th, so can't wait to get them install the following weekend

Hi guys,

I know a few people on here run BC coilovers in E28s. I fitted 1 rear BC BR coilover to mine today to test out heights. But i after winding them down till it bottoms out in the sleeve/housing they still sit heaps higher than they did with cutties, only just tucking tyre on stock rims.

Going off all the photos online, these should sit heaps lower surely?

Should i contact BC or is this as low as i should expect?

These are taken on there lowest setting...




There add shows them to go this low, no where near my height. What do people reckon?


Thanks heaps
Eden

I want!!!!!

I had the same problem recently. I contacted BC and they sent me shorter dampers after giving them my measurements. They still don't go as low as I would like but will do for now.

epearce wrote:Hi guys,

I know a few people on here run BC coilovers in E28s. I fitted 1 rear BC BR coilover to mine today to test out heights. But i after winding them down till it bottoms out in the sleeve/housing they still sit heaps higher than they did with cutties, only just tucking tyre on stock rims.

Going off all the photos online, these should sit heaps lower surely?

Should i contact BC or is this as low as i should expect?

These are taken on there lowest setting...




There add shows them to go this low, no where near my height. What do people reckon?


Thanks heaps
Eden

Interesting you had the same problem. Do they go as low as the add, how much lower than mine currently?

they do not go as low as they claim, at least from the looks of it. I would say with the new dampers they sent me, they were about an inch shorter, so not a noticable difference on the car in my opinion. I can try to get some pics later when I'm back at my home computer.

epearce wrote:Interesting you had the same problem. Do they go as low as the add, how much lower than mine currently?

Matt in SC wrote:they do not go as low as they claim, at least from the looks of it. I would say with the new dampers they sent me, they were about an inch shorter, so not a noticable difference on the car in my opinion. I can try to get some pics later when I'm back at my home computer.

epearce wrote:Interesting you had the same problem. Do they go as low as the add, how much lower than mine currently?

That would be much appreciated!

Annoying they don't go as low as they saw

epearce wrote: These are taken on there lowest setting...

Eden

Ummm correct me if I'm wrong... Your spring perch should be able to be spun down the threaded sleeve some more?? You've got the locking nut all the way down at the bottom of the threads...

It looks like the spring perch and the shock body length can be adjusted separately, which is not the most common way to make coilovers. In this case, I'm guessing that the shock body is already adjusted as short as it can get.

ldsbeaker wrote:

epearce wrote: These are taken on there lowest setting...

Eden

Ummm correct me if I'm wrong... Your spring perch should be able to be spun down the threaded sleeve some more?? You've got the locking nut all the way down at the bottom of the threads...

I shouldn't have to adjust preload to get them to the height shown. The preload is set to that for a reason, it won't do the shock any good if the spring can sit that much lower.

The lock collar is in the right spot, as i have said in all the other posts the shock body is wound to its lowest point.

mooseheadm5 wrote:It looks like the spring perch and the shock body length can be adjusted separately, which is not the most common way to make coilovers. In this case, I'm guessing that the shock body is already adjusted as short as it can get.

I thought it was the most common way? It certainly is from what i see.

Yes, shock body is at its lowest point. Lowering the spring perch isn't a very good way to lower a car.

epearce wrote:Lowering the spring perch isn't a very good way to lower a car.

It is the single most common way to lower a car. It is how virtually every E28 coilover setup is made. Every lowering spring that is higher rate/shorter length does virtually the same thing as well.
It works just fine to do so, but you can get to the point where the spring loses contact with the seat near full droop or you can lower it to the point where the shock bottoms out before the spring, but that lower seat is adjustable for a reason.

epearce wrote:Yes, shock body is at its lowest point. Lowering the spring perch isn't a very good way to lower a car.

I'd explore the possibility of getting shorter shock inserts. Lowering via the spring perch just shortens your shock's piston travel if you start to get a noticeable gap between the spring and the top spring perch.

Seriously, a clapped out Bronzit ETA in an undriveable stance? That's their ad campaign? I'll pass. I'll bet you my lunch money they spun those spring perches all the way down to take that photo, ya' know, fer street cred with the kidz. Cuz that's what it's all about yo.

^ Well said.

I think, that on the Ad photo there are undersized tyres, the exhaust is touching the asphalt, that car moves nowhere with this setup.

If OP wants this kind of lowering for a photo, the Air suspension is a better solution.

undersized tires on lowered perches...That's Jt's car That car was bought to develop the coil overs I believe

Bumping an old thread...for you guys running the BC's, are you happy with them? Any regrets?

No regrets here. Car is still riding great on them since I installed them.

Thanks to Matt at JustJap Australia, shorter coilover inserts were sent at no cost. New ones are approximately 60mm shorter, giving the height i wanted.



And it now tucks a decent amount of tyre without having to adjust preload from factory specs.

epearce wrote:Thanks to Matt at JustJap Australia, shorter coilover inserts were sent at no cost. New ones are approximately 60mm shorter, giving the height i wanted.



And it now tucks a decent amount of tyre without having to adjust preload from factory specs.

Is that at the lowest setting?

I just joined the group and ordered mine and can’t wait for spring to install them.

kzolee wrote:I think, that on the Ad photo there are undersized tyres, the exhaust is touching the asphalt, that car moves nowhere with this setup.

If OP wants this kind of lowering for a photo, the Air suspension is a better solution.

The OP (me) never mentioned wanting my car on the ground. Having 400whp on tap while the car is laying on the ground seems pointless

briianbernal wrote:

epearce wrote:Thanks to Matt at JustJap Australia, shorter coilover inserts were sent at no cost. New ones are approximately 60mm shorter, giving the height i wanted.

And it now tucks a decent amount of tyre without having to adjust preload from factory specs.
]

Is that at the lowest setting?

Rear has since dropped about 20mm. That photo doesn't have front coilovers fitted. Fronts will go lower than you can safely drive at. Currently have a 3mm gap between the top of the tyre and bottom of the guard when on full lock. And i can go about 40mm lower than this, but obviously i couldnt turn the wheel very far.

All this is without adjusting preload away from factory spec.

I know this was a thread about BC but i'm ordering Fortune-Auto from the local distributor here in Montreal.They be installed on my 1988 E28 535i
I've got to decide on spring rates. They're suggesting 10k/8k for a daily or 11k/9k for a bit firmer ride.
Any suggestions from you guys would help.

Thanks

Are the BC dampers the same diameter as the stock ones? In other words, could I buy the shorter BC dampers and modify them to fit into my strut housings?

D Unit wrote:Are the BC dampers the same diameter as the stock ones? In other words, could I buy the shorter BC dampers and modify them to fit into my strut housings?

No. You need their sleeves for the dampers. The dampers thread into the sleeves. That's how you adjust ride height.

clongo wrote:

D Unit wrote:Are the BC dampers the same diameter as the stock ones? In other words, could I buy the shorter BC dampers and modify them to fit into my strut housings?

No. You need their sleeves for the dampers. The dampers thread into the sleeves. That's how you adjust ride height.

Understood. But I was thinking about using their shorter dampers for those of us using a custom coilover kit and already have threaded sleeves over the strut body. I called BC yesterday and they said most of their dampers are 51mm, but do have 45mm dampers used on e30s which "could" fit.

Jay texted me yesterday and said e23 and e28 are both 44mm wide. The BC e30 dampers at $95 each could be a nice option versus buying shorter Bilstein/Koni inserts (325ix, g60) and then having them revalved.

I know. It's heresy and stanceworks --> is that way.

D Unit wrote:

clongo wrote:

D Unit wrote:Are the BC dampers the same diameter as the stock ones? In other words, could I buy the shorter BC dampers and modify them to fit into my strut housings?

No. You need their sleeves for the dampers. The dampers thread into the sleeves. That's how you adjust ride height.

Understood. But I was thinking about using their shorter dampers for those of us using a custom coilover kit and already have threaded sleeves over the strut body. I called BC yesterday and they said most of their dampers are 51mm, but do have 45mm dampers used on e30s which "could" fit.

Jay texted me yesterday and said e23 and e28 are both 44mm wide. The BC e30 dampers at $95 each could be a nice option versus buying shorter Bilstein/Koni inserts (325ix, g60) and then having them revalved.

I know. It's heresy and stanceworks --> is that way.

I should have explained it in a bit more detail. The strut is threaded. The strut sleeve is threaded on the inside, not the outside. So you adjust ride height by turning the complete strut in the tube.

Mine will arrive Monday. Thanks for the thread OP I got mine for a nice price shipped as well!