RCE T2 + Raceseng CasCam helper spring not fully compressing - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

AxisPower · 05-16-2017, 11:02 AM

Currently installing my Tarmac 2's with Raceseng camber plates and ran into a small issue. I noticed that the mount between the helper and main spring seems to be making contact with the spring perch on the camber plate before the helper spring can fully compress. I guess this wouldn't be an issue if I put the helper spring on the bottom, but all the pictures I've seen of other peoples setups the helper spring is on top. Just wondering if anyone else has had this problem? I'll post some pictures once I get home.

finch1750 · 05-16-2017, 12:17 PM

@Racecomp Engineering

strat61caster · 05-16-2017, 12:22 PM

Similar situation (Raceseng + Bilstein) I just put the helper on the bottom.

It's not unheard of:

Racecomp Engineering · 05-16-2017, 12:54 PM

No issue with having the helper on the bottom.

PM a pic if you like and I can get a better idea of what's happening but I think that should take care of it.

- Andrew

AxisPower · 05-19-2017, 11:56 PM

Took some pictures to show whats going on with the front helper spring first in a free state:

and compressed:

As you can see, the helper spring doesn't have a thick enough compressed height and the upper camber plate spring perch gets pushed into the plastic perch. Unfortunately the same thing happens when I put it on the bottom, this time its the adjustable perch thats hitting.

The only solution I could come up with was to use the rear helper which is 10/60/80, versus the fronts 3/60/80. Since the rear helper has a higher spring rate, the coils are thicker and it is about half an inch thicker fully compressed versus the softer 3/60/80 which is just enough clearance. I took a picture to show how the fronts look like with the 10/60/80 rear helper with the suspension loaded up.

The only thing I'm missing is what was the reason for the fronts using different helpers in this case, I know kw v3s nowadays come with 10/60/80 front and back according to their website. I'm just wondering if there will be any issues running the softer helpers in the rear?

byun · 05-20-2017, 12:05 AM

I'm running the exact same setup. I put the helper on the bottom up front and the helper on top in the rear. Have no issues.

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05-16-2017, 11:02 AM	#1
AxisPower Senior Member Join Date: Sep 2013 Drives: 23 GT4RS Location: Western NY Posts: 109 Thanks: 1 Thanked 18 Times in 10 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	RCE T2 + Raceseng CasCam helper spring not fully compressing Currently installing my Tarmac 2's with Raceseng camber plates and ran into a small issue. I noticed that the mount between the helper and main spring seems to be making contact with the spring perch on the camber plate before the helper spring can fully compress. I guess this wouldn't be an issue if I put the helper spring on the bottom, but all the pictures I've seen of other peoples setups the helper spring is on top. Just wondering if anyone else has had this problem? I'll post some pictures once I get home.

05-16-2017, 12:17 PM	#2
finch1750 Undisputed El Presidente Join Date: Jun 2012 Drives: Zenki 37J ZN6 Location: Stockton, CA Posts: 11,593 Thanks: 9,403 Thanked 9,411 Times in 5,270 Posts Mentioned: 374 Post(s) Tagged: 33 Thread(s)	@Racecomp Engineering __________________ "Just like how a strut bar somehow enables you to corner 20MPH faster around a cloverleaf on-ramp, when the reality is, you can do it already but you just don't have to balls to do it." - CSG David

05-19-2017, 11:56 PM	#5
AxisPower Senior Member Join Date: Sep 2013 Drives: 23 GT4RS Location: Western NY Posts: 109 Thanks: 1 Thanked 18 Times in 10 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Took some pictures to show whats going on with the front helper spring first in a free state: and compressed: As you can see, the helper spring doesn't have a thick enough compressed height and the upper camber plate spring perch gets pushed into the plastic perch. Unfortunately the same thing happens when I put it on the bottom, this time its the adjustable perch thats hitting. The only solution I could come up with was to use the rear helper which is 10/60/80, versus the fronts 3/60/80. Since the rear helper has a higher spring rate, the coils are thicker and it is about half an inch thicker fully compressed versus the softer 3/60/80 which is just enough clearance. I took a picture to show how the fronts look like with the 10/60/80 rear helper with the suspension loaded up. The only thing I'm missing is what was the reason for the fronts using different helpers in this case, I know kw v3s nowadays come with 10/60/80 front and back according to their website. I'm just wondering if there will be any issues running the softer helpers in the rear? Last edited by AxisPower; 05-20-2017 at 12:00 AM. Reason: image reupload

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05-16-2017, 12:54 PM	#4
Racecomp Engineering Join Date: Nov 2011 Drives: 2016 BRZ, 2012 Paris Di2 & 2018 STI Location: Severn, MD Posts: 5,520 Thanks: 3,542 Thanked 7,415 Times in 3,033 Posts Mentioned: 311 Post(s) Tagged: 9 Thread(s)	No issue with having the helper on the bottom. PM a pic if you like and I can get a better idea of what's happening but I think that should take care of it. - Andrew

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