Project 2017 86 - C Street
 

Update 8/11/2017

So I've decided that I'm going to start slowly going towards STX because I really want some power parts for the street and for autocross, so that will be happening over the next few months and the bulk during the winter. Planned parts list will go down below soon.

Current State

• Alignment - 1.2 up front, 2.4 in the rear, and 0 toe.
• 20mm Whiteline front bar on stiff
• Stock shocks with TRD springs
• Custom muffler delete that is too loud most of the time

Attachment 156987

I finally found my self overwhelmed with everything that I needed to do to my STS Miata to get it competitive, and well...it was time for a new daily driver so that's when I bought this thing below!

I've decided to get it ready for C Street and decided I would document my journey for any one else to be able to replicate with the new 2017's. Below is my todo list with completed things marked accordingly:

• Wheels and Tires - Done - O.Z. OMNIA 17x7.5 rims wrapped in 235/45/17 RE-71r's
• TRD Lowering Springs - On order
• Crash Bolts for camber - On Order
• Alignment of max camber, 0 toe up front, and 1/8th toe in, in the rear - Waiting for above
• Lightweight catback for weight savings and power (;) Totally not just for the rumble) - Looking for input
• Swaybar(s) - I can do one TRD and one aftermarket so I'm looking for input

Car is currently at 500 miles and I need another 500 before the event this Sunday so fingers crossed I can get the miles + all the camber stuff before then. Otherwise It will be bone stock with wheels and tires.

I have the part numbers for the crash bolts and nuts in my car and I'll grab those later to post in case anyone ever needs them.

Attachment 152322

Nameless Performance sells a Single exit muffled track pipe. It looks good and
only weighs 6 pounds. Worth a look.

Good luck with your build.

Congrats, welcome! I doubt there will be many differences to your prep than those of us who prepped our 13-16 versions.

You might want to flip your camber settings though. I've always run a little toe out up front and a little toe-in or zero toe rear.

I'm in the camp that thinks almost any sway bar combo will work if you adjust your driving, pressures and shock settings accordingly. I'm still on the Perrin 19mm, but I'll finally switch to the TRD bars eventually, maybe... read through the existing CS thread because there are a lot of good tips/hints in there.

This is exactly what I was looking for thanks!

The wheels and tires came in today and I test fitted them and I'm a little worried about the clearance. The TRD forged rims are 7.5 width but 42 offset and I got 7.5 with 48 offset and this is the distance between the tire and the spring perch:

Attachment 152338

It looks fine for now but once I get the additional camber I'm worried it will put me too close at the top, so I might pick up some 5mm spacers, unless anyone has some input.

The next issue is the lugs that came with the rims:

Attachment 152339

The holes in the rims are so small that I need to use this special spline tool, does anyone know of some extended lugs that will fit in there?

Overall the wheels look amazing though:

Attachment 152337

I said 1/8 toe IN on the rear.
No more than 5mm spacers on the front with stock wheel studs but if you can fit a credit card between the tire and the spring search you are good to go.
BTW the Perrin 19mm doesn't work at Devans. You need more front bar. 20mm adjustable White line or maybe even the 22.

Bill B.

Editing to remove incorrect info.

Incorrect, because for the 2017's it specifies that the optional TRD wheels are legal. The dealer offered TRD rims for the 2017 86 are 17x7.5. You can go to build the car on the Toyota website and see the wheels, and you can look at the SCCA Solo rules and see the allowance for the TRD wheels in the class listings.

I stand corrected. They must have just updated that.

Haha I'm glad you found me on here Bill! I would've been stuck with some bad alignment otherwise. And awesome I figured as long as there was some room I'd be fine, and I saw a thread where someone else was running 17x7.5 +55 with no issues so I'm less worried now.

I think I'll do the first event this weekend without the sway just so I'm not trying to get too much done in the few days I have and then I can try to figure out if i'll go 20mm or 22mm. What about Devans makes a 19 not work well? The higher speeds than other lots or just different courses?

And I'm considering returning the rims I got because of that stupid spline tool, the reading I've done has said that if I use impact tools on it (Like I would do every event) that the tool/lugs will get destroyed, so maybe I might just return them for some RPF1s, but I'm just worried about the strength of the RPF1s if I hit some bumps or a small pothole with them ever. Anyone with the RPF1s know?

I've used those kind of lug/tool for some time. At least 2-3 years of Autox. 10 event per year. They are starting to show some wear, and would have needed to be changed if I didn't changed car.
I think that's not that bad. BTW, I used an impact with them all the time.
You can also get the kind of nut that stick out of the wheels holes. That's probably what I'll do with the BRZ.
You may have the same problem with the RPF1. The holes are really close to the edge of the recessed center (google a picture).

I've been looking around for something exactly like what you're describing but I havn't had any luck, maybe I'm using the wrong search terms?

Extended Lug Nuts

Gorilla brand is relatively affordable and easy to find on Amazon. Beware the longer ones may require a deep socket to get on and off which may be a bit inconvenient.

Let me know what camber you get on the rear after the trd springs installed, my right rear was off, around -2.7 and the left side was about -2.3.

TRD offers both 7.5" and 7" wheels on their website, but when I try to "build" an 86 on the toyota website, It only has a single TRD wheel "package".

Is that a staggered wheel package they offer? What does the car come with if I select that package?

*edit* Found this on the TRD site's description for both wheels:

PRODUCT DESCRIPTION

18-in. x 7-in. front and 18-in. x 7.5-in. rear staggered fit; (both with 35-mm. offset, a 5-on-100-mm. bolt circle [P.C.D.] and a 56-mm. center bore) cast alloy wheels designed specifically for the vehicle


http://www.trdusa.com/parts-detail.h...categories=all

http://www.trdusa.com/parts-detail.h...categories=all