SCCA Solo C Street Discussion

[qoncept]

Originally Posted by bimmer635csi

There was an interesting solution to the clunking HERE

Jesus Christ. I've had the idea loose strut tops all along but never bothered checking since I haven't ever had them off. I'll check it when I get home. That's ridiculous.

[vroom4]

Originally Posted by Kido1986

Priced out Konis around $1400 for front DAs. .

That seems high, its usually $200 per corner if you already have the shock...? Either way, I'm pretty far from needing them.

[SeanRTR]

Originally Posted by AustinTX

DA front shocks (at least),

Isn't this counter-productive if you think the BRZ already has too much front spring rate?

[xwd]

Originally Posted by Kido1986

Same here. I dont want a lowered car. I hate tweaking 157 different things, swapping multiple bars all the time, changing springrates, constant re-aligning...

Care to share any of these ideas?

The car is definitely the easy button in STX, there isn't really much to it at this point. If you look at the setup of Bart Hockerman's car (Lance drove it to the top time on the West course) it's very simply setup and hasn't changed in two years. It's lowered an inch on off the shelf Feal coilovers (7K springs), has a WL 20mm front bar and a WRX rear bar. Alignment is pretty much the same as the CS setup, but it is corner weighted. The cars actually ride pretty well on "STX" type suspensions unless you are on rough roads, have a lot of expansion cracks to deal with, etc. The biggest downside for me in STX trim is the exhaust noise.

CS is more of a challenge. I used the MCA DA shocks and they worked well. Having the ability to tune bump makes a big difference, and the range on those is fairly wide.

[qoncept]

Originally Posted by bimmer635csi

There was an interesting solution to the clunking HERE

Loose endlink again. Easy fix, frustrating that I didn't find it last week and that loctite didn't hold it. Hopefully the Strabo bar won't do it.

[Majic86]

Originally Posted by qoncept

Loose endlink again. Easy fix, frustrating that I didn't find it last week and that loctite didn't hold it. Hopefully the Strabo bar won't do it.

I have the Strano bar and have had an end link loosen up once. I just cranked it down pretty good and haven't had the issue again. Shouldn't be dependent on the sway bar I wouldn't think.

[bimmer635csi]

Originally Posted by qoncept

Loose endlink again. Easy fix, frustrating that I didn't find it last week and that loctite didn't hold it. Hopefully the Strabo bar won't do it.

At least you found it. I'd have never thought to look at a bolt that I didn't touch, but you can bet I'll be looking a lot of places even before I hear the noise. Sounds like this might be a factory issue.

[Kido1986]

Originally Posted by vroom4

That seems high, its usually $200 per corner if you already have the shock...? Either way, I'm pretty far from needing them.

Lee from Koni has told me multiple times that they cannot convert the insert cartridges that most of us have. I priced buying the full fronts from Koni and the price for converting. Lee told me there are discounts for doing it all as one purchase, from Koni and it totals about $1400 for the fronts. Talked to him both last year and this year at Nationals

[TrqlessWonder]

Originally Posted by Kido1986

Priced out Konis around $1400 for front DAs.

Can you share where/who quoted that price? A purchase like this is something for next season, and who knows if I can extract a benefit from it, but I'd like the ability to adjust compression and rebound, if for no other reason than to learn something first-hand. And I'd bet that there is more than one source that can do the conversion.

Haven't gotten any quotes myself (thinking this will be a tax-time purchase) but the few that I know of that have converted a yellow to a double (none in a twin) said I should expect to add twice the cost of the shock, to the shock, which leaves me to expect somewhere in the $2400-2700 range for a full set.

Edit: crap, answered the question while I was typing. Thanks.

[Kido1986]

Originally Posted by dwx

The car is definitely the easy button in STX, there isn't really much to it at this point. If you look at the setup of Bart Hockerman's car (Lance drove it to the top time on the West course) it's very simply setup and hasn't changed in two years. It's lowered an inch on off the shelf Feal coilovers (7K springs), has a WL 20mm front bar and a WRX rear bar. Alignment is pretty much the same as the CS setup, but it is corner weighted. The cars actually ride pretty well on "STX" type suspensions unless you are on rough roads, have a lot of expansion cracks to deal with, etc. The biggest downside for me in STX trim is the exhaust noise.

CS is more of a challenge. I used the MCA DA shocks and they worked well. Having the ability to tune bump makes a big difference, and the range on those is fairly wide.

I bottom out (read; scrape the front) on occasional at stock height. Also, I dont have the funds with full exhaust, tune, wheels, coilovers, rear control arms. $2000 exhaust, $900 tune, $1300 coils, $1000 wheels. Though I guess that is almost cheaper than just a set of MCS DAs hahaha

[Kido1986]

Originally Posted by TrqlessWonder

Can you share where/who quoted that price? A purchase like this is something for next season, and who knows if I can extract a benefit from it, but I'd like the ability to adjust compression and rebound, if for no other reason than to learn something first-hand. And I'd bet that there is more than one source that can do the conversion.

Haven't gotten any quotes myself (thinking this will be a tax-time purchase) but the few that I know of that have converted a yellow to a double (none in a twin) said I should expect to add twice the cost of the shock, to the shock, which leaves me to expect somewhere in the $2400-2700 range for a full set.

Edit: crap, answered the question while I was typing. Thanks.

This is JUST for fronts mind you, it will cost additional to convert your Koni rears (or purchasenew ones already converted). Lee from Koni is a well respected member on RRAX and does great by everyone who he talks to.

[jdrxb9]

Anyone thought about or started serious bump stop testing/tuning?

[7thgear]

Originally Posted by jdrxb9

Anyone thought about or started serious bump stop testing/tuning?

Fat Cat Motorsports tune their miatas with bumpstops when rules limit other mods.


however, it would be a big hassle in stock class because you cannot decrease the distance prior to bumpstop engagement


so if you were to install a much stiffer bumpstop, you'd have that fraction of a second where you're on springs and then WHAM bumpstop, this would make for a very twitchy car.

[autoXracer]

The Miata's and RX-8 have been modifying bumpstops in stock class for ages. I don't know the science behind it, but aren't those bumpstops designed for specific spring rates?