Need feedback on JRZ RS Double vs JRZ RS1 vs Tein SRC

[dp1]

Interested in your impressions if you are an advanced driver, if you use(d) either of them on track and if you have a preference.
Please PM me if you've had any issues or concerns about either of these, including if something about them turned you against them in your research.
Currently running Ohlins R&T with custom springs and valving and like them very much for HPDE. Looking for potential upgrade.

Thanks

[BatStig]

Originally Posted by dp1

Please PM me if you've had any issues or concerns about either of these, including if something about them turned you against them in your research.

I ask that anyone who answers this please post in here instead of PM-ing. I am 99.9999% set on the Tein SRC's, when I get finally get off my wallet, but would love to hear more real-world experiences. There is an absurd amount of information on how to slam your car but not enough info out there on proper competition coilovers.

[Icecreamtruk]

Interested in seeing the responses here as well. Suspension is my next area to mod.

[OkieSnuffBox]

@CSG Mike

[Racecomp Engineering]

We've run JRZ quite a bit and helped with the initial specs. We did a brief write up on the RS1 way back. No experience with the Teins though. I'll see if I can get Myles in here to comment.

What's the rest of your set-up like? Tire choice? Cage? Shock tuning experience?

- Andrew

[strat61caster]

What's wrong with the Ohlins?

I think I'd take the dampers with dynos and known quantities and improve on that before jumping on a totally unknown train and likely ending up having to go through the same effort and expense to dial in the Tein's, JRZ's, or something else.

More money doesn't always equal better performance or quality. Nobody is cheating physics, not even when you shell out >$7k for Penske's, it's still a piston moving through fluid.

[dp1]

Originally Posted by Racecomp Engineering

We've run JRZ quite a bit and helped with the initial specs. We did a brief write up on the RS1 way back. No experience with the Teins though. I'll see if I can get Myles in here to comment.

What's the rest of your set-up like? Tire choice? Cage? Shock tuning experience?

- Andrew

HPDE only, 35+ track/ax days over 5 years, intermediate-advanced (HPDE3 in NASA) group, 235/40-17 Toyo RR on RPF1, Whiteline suspension reinforcements, -3.5f/-2.5r camber, no cage, no shock tuning experience or desire to spend too much time on it. Like simplicity of single adjustables but wouldn't mind double adjustable since it appears to be worth it with quality dampers, for as long as I was given good starting values for double adjustables and direction for adjustments.


Regardless of what I get, I will keep Ohlins as spares and will have them resprung to 500lb front/600lb rear and revalved the next time they get serviced. It takes around $1k to service Ohlins shocks and probably around 30+ hours of tracking before they need service. Would appreciate some info about serviceability of the three dampers in the title.


Thanks

[dp1]

Originally Posted by strat61caster

What's wrong with the Ohlins?

I think I'd take the dampers with dynos and known quantities and improve on that before jumping on a totally unknown train and likely ending up having to go through the same effort and expense to dial in the Tein's, JRZ's, or something else.

More money doesn't always equal better performance or quality. Nobody is cheating physics, not even when you shell out >$7k for Penske's, it's still a piston moving through fluid.

Nothing wrong with Ohlins, evaluating upgrade options and want two track sets so I have a spare.

[OkieSnuffBox]

Originally Posted by dp1

It takes around $1k to service Ohlins shocks and probably around 30+ hours of tracking before they need service. Would appreciate some info about serviceability of the three dampers in the title.


Thanks

30 hours for a refresh? That seems abnormally low. That's like ~12-15 track weekends depending on who you run with.

[Racecomp Engineering]

Originally Posted by dp1

HPDE only, 35+ track/ax days over 5 years, intermediate-advanced (HPDE3 in NASA) group, 235/40-17 Toyo RR on RPF1, Whiteline suspension reinforcements, -3.5f/-2.5r camber, no cage, no shock tuning experience or desire to spend too much time on it. Like simplicity of single adjustables but wouldn't mind double adjustable since it appears to be worth it with quality dampers, for as long as I was given good starting values for double adjustables and direction for adjustments.


Regardless of what I get, I will keep Ohlins as spares and will have them resprung to 500lb front/600lb rear and revalved the next time they get serviced. It takes around $1k to service Ohlins shocks and probably around 30+ hours of tracking before they need service. Would appreciate some info about serviceability of the three dampers in the title.


Thanks

Gotcha.

The JRZ RS1 are a great single and IMO have a sizable edge over Ohlins on track. We just found them to have superior valving...especially on the compression side. More low speed, more digressive.

But I'd say a 2 way such as the JRZ RS2 or RS Pro would make more sense for you though. If you're set on keeping the Ohlins as a back up, getting something with a little more flexibility (i.e. something with more potential) as your primary set of dampers would be much more worthwhile in the long run. The 2 way JRZs (espically RS Pro) are a fairly serious set of dampers but are still relatively easily approachable/tunable and definitely streetable. You can do a lot with them...HPDE to time trials to wheel2wheel racing. And support stateside is awesome.

We've had mixed results with revalved Ohlins depending on who's doing the revalve, but either way they still have limitations. JRZ's valving philosophy just works really well. Good digressive compression valving to control unsprung weight, "platform", and not too excessive rebound. Keeps the car stable, flat, compliant, and easy to drive fast.

Hope that helps. Send me a message if you'd like to chat or give us a call to talk to Myles.

- Andrew

[CSG Mike]

@dp1 Danko, give me a call when you'er out of your meeting.

[dp1]

Originally Posted by OkieSnuffBox

30 hours for a refresh? That seems abnormally low. That's like ~12-15 track weekends depending on who you run with.

It is what it is, probably around 30-50 track hours, depending on few variables. To me it translates to once per year.

[toeout]

As a data point, I sent my MCS 2-way remotes in for rebuild this winter after 30K miles on the street plus auto-x runs. They didn't feel any different than when they were new, but I just wanted to have the internals checked. MCS said that the shocks looked great inside and didn't need to be rebuilt. Since they had them apart already, I had MCS refresh all of them anyway.


Next time I go to at least 60K or when something feels off. Also the turnaround between shipping the shocks out and getting them back was one week.

[dp1]

Ordered JRZ RS TWO from CSG after lengthy discussion with @CSG Mike. Much appreciate all replies though it appears that few run these...unless they missed this post. Will get Ohlins rebuilt/resprung to 500lb/600lb and revalved, then swap at the end of each season when the used set gets serviced.