JRZ RS1 coilovers installed on Racecomp BRZ (and other RCE updates)

[Duo]

So now it's my fault? Gee!

(Kidding, kidding)

[Racecomp Engineering]

COME ON!

[Ro_Ja]

Very interested in the JRZ coilovers. What's the range of height adjustability on them?

[Calum]

I'm still laughing. Thanks guys.

RCE, after seeing the price Duo posted (yes his fault again) I'm gonna have to wait for another option. Considering the price, I'll probably try a stiffer bushing option. But the bearing would just be such a better way to go. Urethane bushings tend to seize and in that position would greatly add to the spring rate. There's lots of Heim Joint options already, but I worry about their longevity and they don't tend to have a bearing at both ends.... Dam...

[Racecomp Engineering]

Originally Posted by Calum

I'm still laughing. Thanks guys.

RCE, after seeing the price Duo posted (yes his fault again) I'm gonna have to wait for another option. Considering the price, I'll probably try a stiffer bushing option. But the bearing would just be such a better way to go. Urethane bushings tend to seize and in that position would greatly add to the spring rate. There's lots of Heim Joint options already, but I worry about their longevity and they don't tend to have a bearing at both ends.... Dam...

I can tell you that am NOT a fan of the JDM parts no matter who's name is on it, but the reason I went this way FIRST was based on my experience with the STI arms from the GD chassis STI I owned about 10 years ago. I had those for 4 years of northeastern street and track use without ANY noise, bearing play, NOTHING. Add to this that to install poly bushings, labor and removal is not cheap. Even the DIY-er will bitch about the amount of time they spend. The other benefit ( as you mentioned) is the ZERO play pillowball option removes all play in the rear end. STI uses a very high quality pillowball in the rear that last a long time(no jokes lol).

Is it pricey, yep, but it took about 1.5hrs to swap the arms. No bearing press to remove old bushings, etc.

What cracks me up are the guys who are buying the pricey ADJUSTABLE control arms and NOT replacing those 4 main bushings on the big heacy control arms that attach to the center of the rear body. Those are made of soft rubber. People knock the WL adjustable camber kit yet it does 2 things obviously. Allow for adjustment and reduces the play back there. And its not pricey.

Something to consider. Again, I'm not a fan of the price but WOW, I had to turn the rear shocks DOWN 2 clicks after installing the arms.

Myles

[Racecomp Engineering]

Originally Posted by Ro_Ja

Very interested in the JRZ coilovers. What's the range of height adjustability on them?

I am lowered 24mm front and rear on my car. I have about 4k on them already. Drove to Mid Ohio on them, and make regular trips into Baltimore and DC with the wife no less. Soft on these is beyond your imagination. FIRM is track worthy for sure and this is on 400 lb springs.

I hate to remove them but we are developing the Tarmac II's for this car and they have to come off.

Its like telling the summer girl, you have to go back to school......

Myles


https://sphotos-a.xx.fbcdn.net/hphot...26735989_o.jpg

[Ro_Ja]

Originally Posted by Racecomp Engineering

I am lowered 24mm front and rear on my car. I have about 4k on them already. Drove to Mid Ohio on them, and make regular trips into Baltimore and DC with the wife no less. Soft on these is beyond your imagination. FIRM is track worthy for sure and this is on 400 lb springs.

I hate to remove them but we are developing the Tarmac II's for this car and they have to come off.

Its like telling the summer girl, you have to go back to school......

Myles


https://sphotos-a.xx.fbcdn.net/hphot...26735989_o.jpg

Thanks for your response, Myles. Is 24mm kinda in the acceptable range for this car? I'm not looking to slam the car (given I'm looking at performance suspension from JRZ, Öhlins, etc.), but I was aiming for about a ride height between 25-30mm. Is that pushing the limits or do I have room to go even lower? Say, 35mm? Or is that too low? I still have lots of learn about this car, so keep up the good posts and the information coming.

Regardless of my choice, I've made the decision to order through you guys since you seem to know the most about this car and can guide me to the best option to suit the car and my driving style. I'll be in touch when I'm ready to order. Thanks.

[Duo]

Originally Posted by Ro_Ja

Thanks for your response, Myles. Is 24mm kinda in the acceptable range for this car? I'm not looking to slam the car (given I'm looking at performance suspension from JRZ, Öhlins, etc.), but I was aiming for about a ride height between 25-30mm. Is that pushing the limits or do I have room to go even lower? Say, 35mm? Or is that too low? I still have lots of learn about this car, so keep up the good posts and the information coming.

I'm trying to find the post or link where the Tada-san says what the acceptable lowering range is. No luck yet. I need this info too before I pull the trigger on the modified starter kit I was talking to Andrew about. The JRZ's are overkill for me at this point.

[Purple]

[QUOTE=Kiwi;320514]Model name and Specs of those wheels??

They look really awesome. [/QUOT

Mate have you a rear /front photo of the car showing its stance and tyre size
please.

[Duo]

Okay, so here's what I've found so far:

Originally Posted by Moto-P

From a previous talk I had with CE, Tada of Toyota, his recommendation for suspension lowering of -20mm+/-15mm for dynamic alignment of the arms, I went on the lower height end of the spectrum just for kicks.

And

Originally Posted by Moto-P

LOL! Well teasing wasn't my intentions as much as I was just way too thrilled at already curing something that ever so slightly bugged me about the FRS, which is the somewhat harsh city ride, and that politics-legal-PD-induced monster truck ride height....LOL Good thing Tada-san was clever enough to work around it by specifying arms and rods that work over wide range of height, and secure dynamic travel that is consistent through motions. He even touched on the fact that the FRS/BRZ/86 suspension arms are ideal at 20mm drop!!

So to answer your question @Ro_Ja, I'm sure the car can be lowered more than 35mm but to keep the optimum geometry you're going to have to stick to a 20mm drop. Of course, you could talk to Andrew bout the Whiteline RCA and go lower.

Edit:

The setup I'm looking at has an almost 30mm drop (20mm RCE Yellows + 9.53mm RCE camber plate).

[Ro_Ja]

Originally Posted by Duo

So to answer your question @Ro_Ja, I'm sure the car can be lowered more than 35mm but to keep the optimum geometry you're going to have to stick to a 20mm drop. Of course, you could talk to Andrew bout the Whiteline RCA and go lower.

Thanks for your help, man. I don't want to screw around with the beautiful balance of this car, but I really want to close up that dang fender gap as much as possible without negatively affecting the handling characteristics.

[Duo]

Originally Posted by Racecomp Engineering

I am lowered 24mm front and rear on my car. I have about 4k on them already. Drove to Mid Ohio on them, and make regular trips into Baltimore and DC with the wife no less. Soft on these is beyond your imagination. FIRM is track worthy for sure and this is on 400 lb springs.

I hate to remove them but we are developing the Tarmac II's for this car and they have to come off.

Its like telling the summer girl, you have to go back to school......

Myles


https://sphotos-a.xx.fbcdn.net/hphot...26735989_o.jpg

Are the Tarmac II's mono– or twin–tubes? Correct me if I'm wrong, but aren't these highly–modified/tuned V3's?

[Duo]

Originally Posted by Ro_Ja

Thanks for your help, man. I don't want to screw around with the beautiful balance of this car, but I really want to close up that dang fender gap as much as possible without negatively affecting the handling characteristics.

I'm with you but kind of boxed myself in by buying wheels before looking into the suspension!

[Racecomp Engineering]

Originally Posted by Duo

Are the Tarmac II's mono– or twin–tubes? Correct me if I'm wrong, but aren't these highly–modified/tuned V3's?

twin-tube and yes customized KW V3.

2008 SCCA STU Class national champion was running RCE Tarmac IIs on his Impreza STI.

- Andrew