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Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing.


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Old 03-17-2021, 05:30 PM   #43
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Originally Posted by LancePower View Post
Why B6 over B8?
Only difference is reduced droop travel with the B8, to retain lowering springs when the car is lifted. However B6s are fine for up to something just over 1" lower. So B6 with more droop travel might be "better". But then again at 1.25" lowered I like that I don't have to jack the car up as much to get wheels off the ground.
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Old 03-17-2021, 06:35 PM   #44
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Why B6 over B8?
But why male models?
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Old 03-17-2021, 08:24 PM   #45
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Originally Posted by Racecomp Engineering View Post
Can't comment on ride height as these are not OEM springs of any type...they're a prototype spring we're developing. With OEM springs you'll be within a few mm of factory.



As for the ride, the springs we're using are about 20% stiffer than factory and the ride is still better than OEM 2016 dampers. Have a lot more driving to do.



- Andrew
What's the goal for the new springs?
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Old 03-18-2021, 04:25 AM   #46
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What's the goal for the new springs?
Rally X spring. For loose surfaces. Roughly ½" lift.
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Old 03-24-2021, 09:56 AM   #47
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I just ordered a set of B6s to pair with my set of yellow springs. Looking forward to improved ride quality.
I think my 2017 shocks are tired after 75k km 3 winters, and a few track sessions.
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Old 03-24-2021, 03:37 PM   #48
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I'm on Swift Spec-R springs, 4.4 kg/mm F, 5.3 kg/mm R, about 1.2" lower than stock.

How do they compare to the RCE Yellows? What made you choose those springs specifically?
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Old 03-24-2021, 04:07 PM   #49
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How do they compare to the RCE Yellows? What made you choose those springs specifically?
A bit stiffer than Yellows, closer to Tarmacs. Also the rears are stiffer than fronts for wheel rates closer to f/r weight distribution. I picked them because moar lower. Which didn't work so well with the factory PP Sachs struts + Raceseng camber plates! Really happy with them with the Bilsteins.
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Old 03-25-2021, 04:02 PM   #50
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Great thread. I'm running B6's with Hotchkis Sport Springs. I was concerned that I was making the wrong choice, but the B8 were back ordered at the time which made the decision for me.

The ride feels a bit busy but it's never harsh or unsettled by bumps at speed.



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Old 03-30-2021, 08:48 AM   #51
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I cut one of mine in half before installing and used one half in each strut. Here's the intact one, 65mm long (Hot Wheels Corvette for scale...)
Was it difficult for you to get at them?
I assume this is beneficial to anyone using a lowering spring with these.
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Old 03-30-2021, 09:44 AM   #52
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Was it difficult for you to get at them?
I assume this is beneficial to anyone using a lowering spring with these.
Pretty straightforward. You have to unscrew the lower nut (bolt?) and slide the hydraulic portion out of the strut housing. IMO it's not a necessary step, I was just making sure I had plenty of bump travel. If I had it to do over I'd probably leave them alone.
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Old 04-11-2021, 10:30 AM   #53
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I finished with my RCE yellow + B6 combo.
Short term impressions are great. They feel noticably better than good condition OE shocks+yellows and MUCH better than the tired shocks I pulled off with 75k km.

The ride is firm but never jarring. Handles manhole covers a lot better. Overall stability is noticably improved. Corner entry, on throttle exit feels sharp and precise.
The higher pressure from the B6 makes the car feel a lot more supported if that makes any sense. On OE dampers it felt like the springs were doing all the work and the shocks were along for the ride.(especially near the end at 75k km. They felt more acceptable when I installed them at 50k) B6s feel like they match really well with the spring rates.

My ride height seems to be the same. I did not measure anything, just based on visual inspection. Alignment doesn't feel like it changed much, but I'll still be having alignment checked and corrected if needed. I took photos to match my camber bolt settings to get everything close. Prior settings were -2.3F/-1.9R, 0 toe F/R

Top is B6+yellow
Bottom is yellow + OE damper.

Edit added B6 shot from below while I was doing spring maintenance.
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Last edited by RToyo86; 04-11-2021 at 02:55 PM.
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Old 04-11-2021, 02:45 PM   #54
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Quote:
Originally Posted by RToyo86 View Post
The higher pressure from the B6 makes the car feel a lot more supported if that makes any sense.
That "support" is a really nice feeling and part of why we like Bilsteins (and a few other shocks) so much. Glad you're enjoying the RCE Yellow + Bilstein combo!

- Andrew
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Old 04-11-2021, 04:21 PM   #55
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If only Bilstein didn't blew it with scarce availability of their products even with existing demand
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Old 04-11-2021, 05:19 PM   #56
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@RToyo86:

Might I ask a favor or two. First, what sized tires/wheels are you running? Second, could you take and post another image taken from the side, with the lens at door handle height or top of tire height?

Many thanks,
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