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Old 07-11-2020, 05:41 PM   #1
RR
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Default Anyone here have experience with BR...

Coilover Kit supplied by FCP? https://www.fcpeuro.com/products/vol...br#description

I have Bilsteins on order from IPD and they are slow to come, then I ran across this kit.

Any thoughts on this kit vs stock springs and Bilsteins HD's? I am building up my '92 740 and have IPD sway bar kit already installed, plus engine enhancements and basically throwing everything I have into the 740, fwiw.

I would consider theories as well...

Thanks in advance, RR
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Old 07-11-2020, 08:32 PM   #2
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The whole point of going to coil overs is that you can tune your suspension to better provide you with the handling, and ride that you are looking for.

Stock springs with bilstein HD shocks are a shock upgrade. Stock springs are comfort oriented and give up a lot of handling potential for a good ride and lots of suspension travel so you can fly over pot holes.
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Old 07-12-2020, 05:48 AM   #3
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A lot of people using BC here and they are damn good they are!
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Old 07-12-2020, 11:04 AM   #4
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Really depends on what you want. The spring rates that come with those are not well matched to a RWD Volvo.

Are you comfortable with cutting and welding because you need to do that to install those coilovers.

There are other options on the market.
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Old 07-12-2020, 11:58 AM   #5
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I've had BCs on my 940 for three years, including some trackdays. I ended up with it because I knew it came with the documents needed to pass inspection here and I got it for a decent price. It's far from the stock comfort, but I'd rate the comfort ok for a daily driver. Not too far from bilstein B8 and lowering springs.
The front requires welding, but otherwise it's nice and adjuting is easy (camber up to a certain point). The rear is not as good, the adjustment knob is up in the frame so yu have to drop the damper to adjust it. I had difficulties getting the rear set up so it wouldn't be bouncy and I know other who have had the same complaints. The stock street version is 5kg/mm front and 6kg/mm rear, but there are other springs available as well. Unfotunately no softer springs for the rear AFAIK.
If you want a comfortable ride BC is not the best choice, for good streets and occational trackdays it's ok, but there are probably better ones.
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Old 07-12-2020, 12:12 PM   #6
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It appears my Bilsteins have shipped and am going that route.

Cheers
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Old 07-14-2020, 04:29 PM   #7
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Quote:
Originally Posted by Acke View Post
I've had BCs on my 940 for three years, including some trackdays. I ended up with it because I knew it came with the documents needed to pass inspection here and I got it for a decent price. It's far from the stock comfort, but I'd rate the comfort ok for a daily driver. Not too far from bilstein B8 and lowering springs.
The front requires welding, but otherwise it's nice and adjuting is easy (camber up to a certain point). The rear is not as good, the adjustment knob is up in the frame so yu have to drop the damper to adjust it. I had difficulties getting the rear set up so it wouldn't be bouncy and I know other who have had the same complaints. The stock street version is 5kg/mm front and 6kg/mm rear, but there are other springs available as well. Unfotunately no softer springs for the rear AFAIK.
If you want a comfortable ride BC is not the best choice, for good streets and occational trackdays it's ok, but there are probably better ones.
i heard rumors that you can mount the rears "upsidedown" without an effect, so you can adjust them more easily
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Old 08-05-2020, 06:01 PM   #8
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I'm a bit late and you got one reply from someone else who has them, but I also have had them on my 240 for about a year. The fronts weren't fun to install but like Acke mentioned they work pretty well. My kit came with 6k 6k springs. The rear for me was also extremely bouncy unless I set the dampeners above 25 clicks. I ended up having to remove one of the locking collars so the spring wasn't preloaded too much, and it's hard to get the car to sit without a pretty noticeable rake unless you remove the locking collars completely. It's fairly stiff, but is very tolerable if you don't mind a stiff ride. The rear design is pretty bad and overall I'm not terribly happy with it. It seemed like they never actually thoroughly tested these on cars before they started selling them. I don't hate them though, and would rate them a 7/10
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Old 08-06-2020, 09:59 AM   #9
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Quote:
Originally Posted by Acke View Post
I've had BCs on my 940 for three years, including some trackdays. I ended up with it because I knew it came with the documents needed to pass inspection here and I got it for a decent price. It's far from the stock comfort, but I'd rate the comfort ok for a daily driver. Not too far from bilstein B8 and lowering springs.
The front requires welding, but otherwise it's nice and adjuting is easy (camber up to a certain point). The rear is not as good, the adjustment knob is up in the frame so yu have to drop the damper to adjust it. I had difficulties getting the rear set up so it wouldn't be bouncy and I know other who have had the same complaints. The stock street version is 5kg/mm front and 6kg/mm rear, but there are other springs available as well. Unfotunately no softer springs for the rear AFAIK.
If you want a comfortable ride BC is not the best choice, for good streets and occational trackdays it's ok, but there are probably better ones.
How are they providing documents that will pass the TUV inspection stuff if its getting cut and welded into place by anyone?
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Old 08-06-2020, 10:48 AM   #10
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They don't mention the welding, so it's kind of a workaround... I had mine done because I didn't trust my own welding in such a crucial place. Passed the technical and visual inspection with no problems. That said, I know at least one case where the inspection has been failed because of welding.
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Old 04-08-2021, 08:52 AM   #11
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I've had BCs on my 940 for three years, including some trackdays.

I had difficulties getting the rear set up so it wouldn't be bouncy and I know other who have had the same complaints.

The stock street version is 5kg/mm front and 6kg/mm rear
I'm on the same setup and having the same issues with bouncy rear.

This is the official BC guide on how to set up the divorced rear coilovers (spring separate from shock) but the suspension on the demo car is different and we can't really following these steps on a 940, not exactly at least.

https://youtu.be/BmraSIvT87Q

Any pointers on how to fight the rear bouncy bouncy? I'm desperate.

A friend solved this by re-valving the rear shocks. He's logic is that it's bouncy cause the shock can't handle the spring and there is no lower spring rate available. It actually solved it for him. But it's dang expensive where we are located.

I'm looking for a TB way to solve this one.

Thanks in advance!!

Last edited by Msi; 04-08-2021 at 08:57 AM..
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Old 04-08-2021, 09:14 AM   #12
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Also, in that official BC guide video I posted above, I don't understand a step.



They say to align the shock bottom mount holes by threading the shock body in/out of the shock mount.

All nice and dandy but - what is the position of the shock piston at that time? Is it fully extended? Or fully compressed? Or anywhere specific in between? That affects the total shock length which is what this step is all about...

I assume that at that point it should be fully extended.
Is that right?
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Old 04-08-2021, 11:40 AM   #13
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The rear spring rate BC offers is pretty goofy and better matched to a front spring that's about twice as stiff. No wonder folks are suffering from bouncy rear suspension.

They're cheap coilovers. If you just want a low car, that's fine. I'd be surprised if they worked better than a well sorted stock setup (new bushings, nice dampers, etc). Maybe the extra stiffness will "feel" better.

I don't get the impression there's much R&D into them.
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Old 04-08-2021, 11:48 AM   #14
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Agreed. However, they are already on the car, and I don't want to give up without trying.
People manage to make it work. I'm wondering how.
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Old 04-08-2021, 12:16 PM   #15
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Can you swap back to a stock style spring?
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Old 04-08-2021, 03:46 PM   #16
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Agreed. However, they are already on the car, and I don't want to give up without trying.
People manage to make it work. I'm wondering how.
It never works well. People just put up with them because the parts are cheap and they have low expectations.
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Old 04-08-2021, 03:49 PM   #17
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The rear spring rate BC offers is pretty goofy and better matched to a front spring that's about twice as stiff. No wonder folks are suffering from bouncy rear suspension.

They're cheap coilovers. If you just want a low car, that's fine. I'd be surprised if they worked better than a well sorted stock setup (new bushings, nice dampers, etc). Maybe the extra stiffness will "feel" better.

I don't get the impression there's much R&D into them.
They don't have any R&D into them. They take their generic off-the-shelf stuff and slap it in a box.

For BC, it's a volume game. Quality isn't a consideration.


They have an extra caster edition.

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Old 04-08-2021, 11:43 PM   #18
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This earned an audible exhale of disappointment.
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Old 04-09-2021, 06:08 PM   #19
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Can you swap back to a stock style spring?
Hmmm, that's an interesting though. Actually yes. Since the shock and spring are separate - I can, cut the stock spring to the height I want and try it. It may just work better with the BC shock than the BC spring does.
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Old 04-09-2021, 06:12 PM   #20
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BTW, anyone has a suggestion for the question I asked in comment #12 above?

Here -
http://forums.turbobricks.com/showpo...0&postcount=12
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Old 04-10-2021, 05:15 AM   #21
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BTW, anyone has a suggestion for the question I asked in comment #12 above?

Here -
http://forums.turbobricks.com/showpo...0&postcount=12
IIRC my installation manual has the strut extended at that point. Fully compressed would make no sense if the spring is under preload only. I have also considered trying normal, cut HD rear springs instead for a slightly softer spring rate. Don't want to go too soft since I have 8kg/mm in the front.
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Old 04-10-2021, 05:29 PM   #22
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Aren't the shocks adjustable? Try adjusting the shocks for more rebound to help control that bouncy rear.
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Old 04-10-2021, 07:52 PM   #23
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This earned an audible exhale of disappointment.
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Old Yesterday, 04:39 PM   #24
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BC is the turbobricks facebook group of coil overs
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Old Yesterday, 06:14 PM   #25
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Aren't the shocks adjustable? Try adjusting the shocks for more rebound to help control that bouncy rear.
The rebound is not separately adjustable. You have a single turn knob that says "Hard <=> Soft" with I don't remember how many clicks in between. That's it.

One of my friends solved the bouncy rear by re-valving the rear shocks.

The only problem is that where I'm located at - that cost him 2/3rds of the whole coilover set. And that's just too much for me at this point.

So I'm looking for TB wisdom on how to solve this.

If I can't - I'm on 8kg front 6kg rear springs - and

I feel like selling the rear shocks and fitting a pair of better ones is the way to go. Or maybe refitting the rear shocks and springs entirely.

I'm very very happy with how the front is. It's really superb.
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