Racecomp Engineering Superstreet-1

[cueball89]

I have 2 years and ~17k miles on my SS1's. No track days but plenty of autox. I swapped out the 6kg/mm springs to 7kg/mm springs last year. 2/86 in pax 4/86 in raw time(fastest raw time on street tires) yesterday in the fairly competitive Finger Lakes Region.

[CatDaddysBBQ]

No, it's not my DD. Seen just a few track days, a handful of autoX and maybe 3k road miles in that time.

They're still fresh.

[CatDaddysBBQ]

Originally Posted by cueball89

I have 2 years and ~17k miles on my SS1's. No track days but plenty of autox. I swapped out the 6kg/mm springs to 7kg/mm springs last year. 2/86 in pax 4/86 in raw time(fastest raw time on street tires) yesterday in the fairly competitive Finger Lakes Region.

How was that spring swap process? I take it you like the new rate? Very interested.

[cueball89]

Originally Posted by CatDaddysBBQ

How was that spring swap process? I take it you like the new rate? Very interested.

It was an easy process. Lower the spring perches, remove the suspension from the car, take the top hat off and slide the new spring on. IIRC I needed a large deep socket for the front camber plates, it's a decent sized nut. Setting the ride height again was pretty easy. I lowered the perches by an appropriate amount for the increased spring rate and spring length compared to the old springs and my ride heights were pretty spot on.

The higher rate is great for autox. The car reacts quicker in transitions and rolls much less. I took a quick 20 mile ride with just the 7k rear springs installed. I did not notice much difference in NVH. When I put the front springs on I noticed a definite uptick in road noise in the cabin at low speeds which I thought was odd.

It's not a change I would make if the car was strictly street driven or only occasionally autoxed. The car is a fair amount stiffer on the street. The body roll and engagement while driving on back roads isn't there unless you're driving at ludicrous speeds. I still think it rides well for what it is, a 392 lb/in spring with solid front strut top mounts. The ride still isn't jarring, it is busier though. For the cost of springs it's worthwhile IMO if you're looking for something more focused.

Not exactly apples to apples pictures,
6k springs



7k springs

[CatDaddysBBQ]

Thank you for the reply! I'm definitely interested in this. Did you order the springs through RCE or somewhere else?

I might wait until mine need servicing/refreshing and then definitely have this done at the same time.

[cueball89]

Originally Posted by CatDaddysBBQ

Thank you for the reply! I'm definitely interested in this. Did you order the springs through RCE or somewhere else?

I might wait until mine need servicing/refreshing and then definitely have this done at the same time.

I bought a used new set of springs off the forums. I'm sure RCE wouldn't have any issues setting you up with 7k springs.

[jflogerzi]

Originally Posted by cueball89

I bought a used new set of springs off the forums. I'm sure RCE wouldn't have any issues setting you up with 7k springs.

Swift springs are a popular spring upgrade. I bet if you work with RCE they will point you in the right direction

Sent from my GM1915 using Tapatalk

[Racecomp Engineering]

We can set you up with 7 kg/mm springs when you're ready.

- Andrew

[Lynxis]

Was out doing autoslalom today. Still running Falken FK510, and the SS1 with -3f/-2.2r alignment, same as my last track day. Classed in STX on account of the suspension but I won't even be competitive with CS/DS drivers on account of my tires and my rust... but excuses won't buy me a faster car...

So I did pedal dance to get the most out of the car and more importantly, get a better feeling for how the suspension behaves without the fascist electronic nanny state taking over. I wasn't interested in worrying about suspension settings or tire pressures, more concerned about learning how to control the car at speed again. I'm happy to announce that it is my opinion that this suspension is better behaved than the HKS suspension was at the limit. In particular, I think the weaknesses of the HKS suspension come down to the 4k rear spring rate which doesn't feel like it's enough for the available stroke. Small mistakes on the HKS were easy to correct but big ones induced terrible snap oversteer. The 6k rear rates on the SS1 seem to keep the rear in check better, at no time was I unable to resolve a slide with ease. I'll also note that when slaloming, the car seems to be capable of handling slightly higher slaloming speeds before the chassis gets upset, something else I attribute to the higher rear spring rate.

I should be clear that I'm on the very edge of both the available weight transfer speed and the tire under my current configuration which makes me believe this suspension is well suited to this class of tire but I think someone looking for suspension for competitive auto slalom might want to look at something with more spring rate. I mean, you might be able to compensate with bigger sway bars and by increasing dampening but I think you should probably just look for something with more spring rate if that's where you want to go with your car.

[chaoskaze]

Originally Posted by Lynxis

I installed them on the car this past weekend, took a before and after picture but no pics of the install itself. It's not special anyways.

Before:

Hi there, I'm looking into SS1 & came across the thread.

I'm do enjoy more backroad/canyon driving in southern cali/bay area + lots daily with occasion track once a year.
After your experience with them for almost 2 years, Would SS1 be a good match to my use of the car?


Btw can you tell me what is your tire/wheel setup in the photo here?

[Lynxis]

Originally Posted by chaoskaze

Hi there, I'm looking into SS1 & came across the thread.

I'm do enjoy more backroad/canyon driving in southern cali/bay area + lots daily with occasion track once a year.
After your experience with them for almost 2 years, Would SS1 be a good match to my use of the car?


Btw can you tell me what is your tire/wheel setup in the photo here?

I think the SS1 would be great for your use case.

I can tell you those gold 6 spoke wheels are a 5x100 bolt pattern, 71mm center bore, 17x7 et42 and they fit over the RR Racing BBK I had when I first bought them. I don't know the make or model and neither did the guy I bought them from.

The tires are 205/50r17 off-brand winter tire and I run that setup in the early spring and late fall and park the car on them over the winter.

I'll also use this chance to provide a bit of an update regarding my experience with the SS1. This year, I got a set of Konig Hypergram 17x9 et40 and 245/40r17 Falken RT660 tires for track use.



I haven't done enough autoslalom on this setup yet to speak intelligently about it so I'll leave that out. That said, it has no problem handling the RT660 on track days. Weight transfer happens fast enough on my local course sweepers and transitions that you just set the car into the corner and then put your foot down all the way through and the car is completely stable. Trail braking is intuitive too. I've already set a new PB at my local road course by over a second on this setup and I'm still learning how to utilize the added grip from this class of tire.

[Amputechture]

Is there a trick or something I’m missing on how to loosen the 4 t-35 bolts on the camber plates?

[Lynxis]

Originally Posted by Amputechture

Is there a trick or something I’m missing on how to loosen the 4 t-35 bolts on the camber plates?

My alignment shop adjusted mine so I can't help there. Sorry.

[marco_mc22]

Originally Posted by Amputechture

Is there a trick or something I’m missing on how to loosen the 4 t-35 bolts on the camber plates?

They’re not super tight but use a good quality socket since the housing is conical.