Shock Tower Brace Question

Miata Parts, Intakes, Superchargers, Headers, Exhausts, Shocks, Springs, Sway Bars, Brake Kits, Autocross and track mods.

Shock Tower Brace Question

Postby avera01 » Tue Aug 28, 2018 1:50 pm

I have a 2016 and had wished at time of purchase I could have gotten the Club spec with the GT, like you can now do with the 2019 ND.

So slowly I am adding modification as I see the need and receive an obvious benefit (brakes and sways). So the question is:

Does adding a shock tower brace provide any tangible and felt benefit to a daily driver GT (very low mileage) where its used occasionally for mountain driving?

I don't race or track the car, its 95% street driving in flat, straight Florida. I love tinkering with the car, but would rather spend the money elsewhere than in a new cowl brace and bar if there is no tangible benefit in doing so. Also, I like to keep my option for a future SC and not sure it the bar would interfere.

Already did the door bushing and don't really notice much rattling or "cowl shake" (if I understand that term correctly - its bit vague).

Any input is greatly appreciated.

Andrew
avera01
 
Posts: 42
Joined: Mon Jun 27, 2011 2:20 pm

Re: Shock Tower Brace Question

Postby BillK336 » Tue Aug 28, 2018 5:31 pm

The Cobalt one I picked up used definitely improves steering response, compared to the standard oem in my Club.
So, sorry, the answer is yes.
Only downside is if you need to remove it for any reason, repositioning the electronics is a bit finicky.
BillK336
 
Posts: 31
Joined: Sat Oct 03, 2015 1:31 am

Re: Shock Tower Brace Question

Postby avera01 » Wed Aug 29, 2018 4:12 am

BillK336 wrote:The Cobalt one I picked up used definitely improves steering response, compared to the standard oem in my Club.
So, sorry, the answer is yes.
Only downside is if you need to remove it for any reason, repositioning the electronics is a bit finicky.



Can you elaborate more on what you mean by "improve steering response" as well as what electronics need to be re-positioned (assuming that is needed because of the cross member)?

Do you think you would get the same steering response using a bar without the additional cross member such as GWR RoadsterSport model or the material used (aluminum vs SS)?
avera01
 
Posts: 42
Joined: Mon Jun 27, 2011 2:20 pm

Re: Shock Tower Brace Question

Postby KurtH460 » Wed Aug 29, 2018 5:02 am

Pics of STB with electronics attached (attach before bolting down).
I'm doing complete RS brace kits install!!
You will be 100% satisfied if you add STBs & bracing to you car!!
With the PG 28.5mm/16mm sway bars set to full tight/tight, it's like a "slot car on rails"
Kurt
Attachments
20180818_114939.jpg
20180818_093803.jpg
20180818_093819.jpg
KurtH460
 
Posts: 25
Joined: Tue Jul 24, 2018 2:58 pm

Re: Shock Tower Brace Question

Postby KurtH460 » Wed Aug 29, 2018 5:22 am

Additional pics of RS braces.
Kurt
(sorry, file is too big for pic of finish panel reinstalled over rear brace, can't load to site)
Attachments
20180818_075751.jpg
20180818_070807.jpg
20180822_175513.jpg
KurtH460
 
Posts: 25
Joined: Tue Jul 24, 2018 2:58 pm

Re: Shock Tower Brace Question

Postby BillK336 » Wed Aug 29, 2018 9:07 am

Improvement in turn-in, initial entry into a corner.
BillK336
 
Posts: 31
Joined: Sat Oct 03, 2015 1:31 am

Re: Shock Tower Brace Question

Postby KurtH460 » Wed Aug 29, 2018 9:26 am

Absolutely!!
But, I do have the PG sway bars (set full tight) which also makes a HUGE difference!!
Right now, even better turn-in is limited by the "skinny" stock tires, AND by current alignment specs (had to realign after pulling the steering rack for the sway bar install..the two bolts that hold the rack are not zero spec fitments, so rack will be off alignment no matter what).
Current "stock" alignment is Front: -0.2° chamber, 7.5° caster, 1/32 toe in. Rear: -1.0° chamber, 1/32" toe in.
Alignment shop said they'll realign when I get the 6UL/tires soon, as the alignment will be slightly different then. Will go to about -1.0 to -1.2° chamber F&R then.
Kurt
KurtH460
 
Posts: 25
Joined: Tue Jul 24, 2018 2:58 pm

Re: Shock Tower Brace Question

Postby avera01 » Wed Aug 29, 2018 10:00 am

So is steering turn noticeable in normal street usage or only with aggressive driving?

Will I get the same steering improvement result with the RoadsterSport bar or do I need the 3 point Cobalt bar with the added cross member and SS construction?

Not sure if I prefer a "go-kart" flat on the rails handling, but reduced body roll is welcomed which is why I added the RoadsterSport SB set to medium. Stock springs and shock seems to work fine with the upgraded SB as I did not want to lower the car and was not looking (or have the need) to do coilovers at this time. Mountain driving is a 800 mile trip in each direction from south Florida so comfort is very important.

For my needs, any improvement in handling and reduce body rattle/shake is desired except as noted above with the springs/shocks.
avera01
 
Posts: 42
Joined: Mon Jun 27, 2011 2:20 pm

Re: Shock Tower Brace Question

Postby KurtH460 » Wed Aug 29, 2018 10:09 am

I should mention, Mazda calls for stock tire pressure of 29psi, but I usually set at 30-32psi..currently 31psi. Tire psi does make a difference in handling/turn-in, etc also.

With the stock tires, low front camber, and sway bars set full tight, the car is "rolling" on the sidewall..and right at the point of pushing in the 90° sweepers that we have on some of the country roads near me!! I always set my cars on the edge of pushing, it's my preferred way of handling..I just feel a car that gets "tail loose" will spin you out faster than controlling a pushing car that you can feel getting there through the steering wheel! (but that's just me). The new wheels/tires/added camber/tire psi will correct the sidewall roll, and the "edge of push" when all dialed in.

Here's what is IMMEDIATELY noticable with all the braces and door bushings..so far...the Club rides "like a dream" compared to stock (those Bilsteins are great for cornering, but are way over-valved for comfort on such a small, light car!! The braces completely changed that!)

I hope to have the RS K/X/Y braces on in next two weeks..depending on wait/delivery time. Can post how that changes handling, etc then.
Kurt
KurtH460
 
Posts: 25
Joined: Tue Jul 24, 2018 2:58 pm

Re: Shock Tower Brace Question

Postby KurtH460 » Wed Aug 29, 2018 10:20 am

Normal street driving is...still normal. Not much change noticed unless getting into corners..and the more speed, the more the noticed improvement!

It's hard to argue against the added cross-support bar on some STBs! I just like stuff that matches (ALL RS in my case). And, I want the Edelbrock S/C as last mod...and GWR shows that it'll fit with their RS STB..so easy choice for me.

As to "riding on rails", to me that's the point of adding stiffer sway bars...hence, my always "full tight" mentally :))

This Club could now be reasonably, comfortably driven long miles now...and I wouldn't have said that before the mods :))
Kurt
KurtH460
 
Posts: 25
Joined: Tue Jul 24, 2018 2:58 pm

Re: Shock Tower Brace Question

Postby avera01 » Wed Aug 29, 2018 11:07 am

KurtH460 wrote:Normal street driving is...still normal. Not much change noticed unless getting into corners..and the more speed, the more the noticed improvement!

It's hard to argue against the added cross-support bar on some STBs! I just like stuff that matches (ALL RS in my case). And, I want the Edelbrock S/C as last mod...and GWR shows that it'll fit with their RS STB..so easy choice for me.

As to "riding on rails", to me that's the point of adding stiffer sway bars...hence, my always "full tight" mentally :))

This Club could now be reasonably, comfortably driven long miles now...and I wouldn't have said that before the mods :))
Kurt


You are absolutely right about tire pressure, just going from 28 to 29 the car ride is firmer and road variations more noticeable.

My RoadsterSport SB are not as strong as the Progressive brand from GWR and set to the middle hole F/B gives a nice flatter ride but with some body roll; not like the huge dips before.

I also have a performance alignment which made a huge difference in handling even with stock tires/shocks/springs. Tire to be replaced when worn to the 215 size as I likely will be keeping the stock rims.

Note my car is an auto trans GT so the GWR under body braces are currently not available.

So, from the responses so far, its worth for added handling improvement to get a STB installed and that a RS STB will provide similar results, perhaps not to the same extent, as the more robust Cobalt STB.

Now wondering if changing to Bilstein shocks with stock springs worth the expense and trouble in order to keep stock height. My ride is fairly comfortable and stable and has to be wife approved......
avera01
 
Posts: 42
Joined: Mon Jun 27, 2011 2:20 pm

Re: Shock Tower Brace Question

Postby KurtH460 » Wed Aug 29, 2018 11:26 am

Like I said before, I wouldn't argue against a STB WITH the straight cross brace, but the RS brace is super rigid because of the honeycomb aluminum tubing..I can't imagine there would be any noticable difference between the RS and the Cobalt w/ cross brace. Plus, the RS is one-piece, so no worries about joints loosening up and negating the braces benefits.

I'm going to try to keep the Bilsteins/stock springs this year..it's my wife's toy..and any decrease in comfort/joy WILL come back to me!! I do think I'll have to make some strut/spring change when the new wheels/tires go on though...wider tires aren't gonna look right with that ~2.75" tire/fender gap!!

My wife doesn't want her car lowered, but I'm gonna probably have to do a 1" drop to have the right look/stance. So, will probably switch to Konis (so I can adjust/tune them for best sport/comfort compromise) and then RS or PG springs...on the sly, and claim ignorance (or beg for forgiveness!!) :)))
Kurt
KurtH460
 
Posts: 25
Joined: Tue Jul 24, 2018 2:58 pm

Re: Shock Tower Brace Question

Postby avera01 » Wed Aug 29, 2018 2:42 pm

Thanks to all for your time and responses.
avera01
 
Posts: 42
Joined: Mon Jun 27, 2011 2:20 pm

Re: Shock Tower Brace Question

Postby KurtH460 » Wed Aug 29, 2018 2:51 pm

No problem at all..that's what we're on this forum for..to help other enthusiasts:))
***side note, just got notification from GWR that the Underbody Brace kit will be to me next Weds!! Yeah!!***
KurtH460
 
Posts: 25
Joined: Tue Jul 24, 2018 2:58 pm

Re: Shock Tower Brace Question

Postby KurtH460 » Mon Sep 03, 2018 11:04 am

The RS Underbody 4-piece brace kit showed up yesterday. I got them installed this morning (very simple, easy install..even the welded nut rods into the frame).

REALLY AMAZING tightness to the body now!!! You woyld never guess you're riding in a convertible now..feels even more like a full frame car!!

I also noticed that the steering is more precise, tighter, and more accurate now..ABSOLUTELY satisfied with how all the RS braces have transformed this MX-5 CLUB!!
KURT
Attachments
20180903_094143.jpg
20180903_094248.jpg
20180903_094342.jpg
KurtH460
 
Posts: 25
Joined: Tue Jul 24, 2018 2:58 pm

Next

Return to Mazda Miata and Fiat 124

Who is online

Users browsing this forum: No registered users and 5 guests