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Discussion Starter #1
Well this is an awfully sad/slow moving autocross forum :(. Does anyone here autocross their 3?

I have a car that I use specifically for autocross... a 1995 Escort GT. For various racecar reasons sometimes it breaks. It's also terrible in the rain. I'm hoping my new daily-driver 3 will make a halfway decent backup car. Any tips/tricks?

My 3 is a 2010 S GT with the 2.5 and 6 speed. It came to me with some garbage Chinese coilover suspension installed, so I'll be putting on some Eibach springs and Koni Sport shocks ("yellows") very soon. I'm thinking an upgraded rear bar would also be nice... on the fence between getting a used MS3 bar vs. a new adjustable bar like the 24mm Whiteline.
 

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*The Electrician*
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Autocross yes sir, season just started this past weekend, tho Im still waiting on summer tires so I didn't run my car this round. May 5th/6th is the next event and I'm hoping to be ready by then.

I even went for a ride in this lime green thing, so jelly, its not even outclassed either, probably running SSM or something like that but its done to the tits, bigger turbo, coilovers, swaybars, big brake kit, it felt like a monster out there.
 

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Discussion Starter #4
Autocross yes sir, season just started this past weekend, tho Im still waiting on summer tires so I didn't run my car this round. May 5th/6th is the next event and I'm hoping to be ready by then.

I even went for a ride in this lime green thing, so jelly, its not even outclassed either, probably running SSM or something like that but its done to the tits, bigger turbo, coilovers, swaybars, big brake kit, it felt like a monster out there.
What kind of suspension setup do you have on your 3, and what class do you run? I’m hoping the Eibach Pro Kit/Koni combo will be a good dual-purpose suspension. I’ve had (and liked) Eibach’s on other vehicles in the past, but this will be my first time running Koni’s.

We had a test and tune event two weekends ago, my Escort was still down so I just spectated & rode in a bunch of cars. The first points event is this Sunday… I’m ready-ish. My new suspension for the escort turned out to be a bit underwhelming both in fitment and performance, but that happens sometimes with first-batch parts for an old niche chassis… thankfully the manufacturer is working with me to resolve the issues. Making some changes to the bottom bracket design to fix the lack of tire clearance, and then they will be re-valving the shocks in a few weeks. In the meantime I can drive it… but my rear camber is nearly 0 (needs to be about -1.5*) and the low speed damping is too soft so the car bounces a lot on small bumps/dips/etc.

Love that Fiesta! My Escort is not dissimilar as far as mods go, although I’m still running stock brakes at the moment. I run in SMF… not very competitive since I can’t bring myself to invest in a set of A7’s just yet. This is only my 2nd season, but if I can get more consistent this year I might invest in some “real tires” next season. Currently running on spec miata take offs… can be tough to get enough heat into them sometimes.
 

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Discussion Starter #5
I've never AutoX, Only HPDE at the local racetracks in my old mz3
I’m hoping to get my suspension sorted out by this summer, in time for a September track day my autocross club is putting on. It would be my first track day ever, really looking forward to it!
 

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2018 Mazda 3 GT called Coffee.
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*The Electrician*
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Autocross yes sir, season just started this past weekend, tho Im still waiting on summer tires so I didn't run my car this round. May 5th/6th is the next event and I'm hoping to be ready by then.

I even went for a ride in this lime green thing, so jelly, its not even outclassed either, probably running SSM or something like that but its done to the tits, bigger turbo, coilovers, swaybars, big brake kit, it felt like a monster out there.
What kind of suspension setup do you have on your 3, and what class do you run? I’m hoping the Eibach Pro Kit/Koni combo will be a good dual-purpose suspension. I’ve had (and liked) Eibach’s on other vehicles in the past, but this will be my first time running Koni’s.

We had a test and tune event two weekends ago, my Escort was still down so I just spectated & rode in a bunch of cars. The first points event is this Sunday… I’m ready-ish. My new suspension for the escort turned out to be a bit underwhelming both in fitment and performance, but that happens sometimes with first-batch parts for an old niche chassis… thankfully the manufacturer is working with me to resolve the issues. Making some changes to the bottom bracket design to fix the lack of tire clearance, and then they will be re-valving the shocks in a few weeks. In the meantime I can drive it… but my rear camber is nearly 0 (needs to be about -1.5*) and the low speed damping is too soft so the car bounces a lot on small bumps/dips/etc.

Love that Fiesta! My Escort is not dissimilar as far as mods go, although I’m still running stock brakes at the moment. I run in SMF… not very competitive since I can’t bring myself to invest in a set of A7’s just yet. This is only my 2nd season, but if I can get more consistent this year I might invest in some “real tires” next season. Currently running on spec miata take offs… can be tough to get enough heat into them sometimes.
Why not run a set of dedicated RE71R's? Not enough grip?

I ran H-street last year and was hoping to run it again this year but I downsized from 18's to 16's for cheaper daily driver tires and better tires for winter. This leaves me in ST class but I won't be anywhere near prepped enough for it so I'll just have fun and keep working on my driver mod. Its entirely possible I might be able to still get a dedicated set of wheels/tires(RE71R's) before the season is over and then I can drop back to H-street and get my pax back. Until then Firestone firehawk Indy 500's will work, also ST isn't that far off H-street so if I can manage some good driving maybe I can still come in the top 30. My only other useful mod is a progress rear swaybar set to full stiffness, otherwise its a stock 2017 2.5L with the 6spd manual, and 4 safety modes to disable before I start my runs lol. Last season I only ran about 4 events and on oem dunlops so I should be able to climb up the standings this year with proper summer tires. Prior to that Ive run random events here and there with various cars Ive owned, including some rallycross and ice racing so I've got a really good balance of knowledge and experience.

Lotta stiff competition here, we were up to 100 entries per event last season including some national champions and guys who have been on the podium down at Packwood. One of founding members is building a track out here too, Badlands Motorsports Resort, we get a section of track that is just like the Corkscrew at Laguna Seca, massive drop-off into a valley. Im already planning to buy and build an FRS/BRZ for it, first year just minor suspension tweaks and some tires. After that, full on race build, boost, full suspension tuning with professional support for the first few races to help me dial in the suspension, big brake kit, probably stripped interior and eventually a cage for safety. I want to set lap records and I am very determined to do so, probably too determined for my own good lol, but I want it. My goal is to become a track instructor teaching exotic car owners how to safely push their toys at the track. Its going to be a fantastic facility, 2 tracks, plus a kart track, skidpad, winter snowmobile courses, and one of the main tracks will be open in winter too. Their building condos out there, extra rental garages for servicing, a bunch of paths and walkways, stuff for kids, stuff for parents, stuff for the poor wives who doesn't want to be there lol. When they say motorsports resort, they mean it!!! Super excited for this to come together and open next year with the 2nd track being finished and available the year after that.
 

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Discussion Starter #8
Why not run a set of dedicated RE71R's? Not enough grip?

I ran H-street last year and was hoping to run it again this year but I downsized from 18's to 16's for cheaper daily driver tires and better tires for winter. This leaves me in ST class but I won't be anywhere near prepped enough for it so I'll just have fun and keep working on my driver mod. Its entirely possible I might be able to still get a dedicated set of wheels/tires(RE71R's) before the season is over and then I can drop back to H-street and get my pax back. Until then Firestone firehawk Indy 500's will work, also ST isn't that far off H-street so if I can manage some good driving maybe I can still come in the top 30. My only other useful mod is a progress rear swaybar set to full stiffness, otherwise its a stock 2017 2.5L with the 6spd manual, and 4 safety modes to disable before I start my runs lol. Last season I only ran about 4 events and on oem dunlops so I should be able to climb up the standings this year with proper summer tires. Prior to that Ive run random events here and there with various cars Ive owned, including some rallycross and ice racing so I've got a really good balance of knowledge and experience.

Lotta stiff competition here, we were up to 100 entries per event last season including some national champions and guys who have been on the podium down at Packwood. One of founding members is building a track out here too, Badlands Motorsports Resort, we get a section of track that is just like the Corkscrew at Laguna Seca, massive drop-off into a valley. Im already planning to buy and build an FRS/BRZ for it, first year just minor suspension tweaks and some tires. After that, full on race build, boost, full suspension tuning with professional support for the first few races to help me dial in the suspension, big brake kit, probably stripped interior and eventually a cage for safety. I want to set lap records and I am very determined to do so, probably too determined for my own good lol, but I want it. My goal is to become a track instructor teaching exotic car owners how to safely push their toys at the track. Its going to be a fantastic facility, 2 tracks, plus a kart track, skidpad, winter snowmobile courses, and one of the main tracks will be open in winter too. Their building condos out there, extra rental garages for servicing, a bunch of paths and walkways, stuff for kids, stuff for parents, stuff for the poor wives who doesn't want to be there lol. When they say motorsports resort, they mean it!!! Super excited for this to come together and open next year with the 2nd track being finished and available the year after that.
Since I’m still learning and making significant upgrades/adjustments to the car, I’m afraid I would burn off RE71R’s too quickly, for the cost. Plus even with a street tire I would still be in SM because of the added turbocharger. The spec miata Hoosier SM7’s are working out okay, and I can get them practically for free with enough meat for a couple autocrosses. I race with a private club so we do our runs a little differently than a normal SCCA event. We run two staging lines and do our runs in pairs… for each “hot tire run” you’re only waiting a minute or two since your last run, which makes a huge difference, especially with the harder compound tires. One of the turbo Miatas who occasionally takes FTD runs on 275/35R15 Hoosier R7’s, the same compound that I’m running.

Sounds like you’re having a lot of fun out there in your ’17! How much stiffer is the Progress rear bar vs. your stock rear bar? There are a ton of rear bar options for my 2nd gen 3, just trying to decide which one to go with. I’m leaning towards the stock Mazdaspeed bar, since most adjustable bars seem to have somewhat compromised endlink geometry on “full stiff”. And let’s be honest, that’s probably where it’s going to end up :)

Sounds like you live in a great place for racing! I live about 10 mins from the very first dedicated asphalt race track in the USA. Unfortunately, despite their sizeable skid pad and paddock area, they rarely hold autocross events there :(. That new facility that’s being built in your area sounds incredible… I’m jealous! Hopefully they are able to keep it accessible to everyone, and not just those exotic car owners and pro race teams.
 

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Discussion Starter #9

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2018 Mazda 3 GT called Coffee.
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You should be fine with the OEM end links.
CK
 

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Thanks!

Rear springs and shocks are on - what a difference! I set the Koni's at 360 degrees above full soft. I do wish the rears were adjustable without removal, but you can't win 'em all :).

I'm hoping to get the front suspension installed this afternoon, followed by a DIY alignment check this weekend. There doesn't appear to be any front camber adjustability on this chassis from the factory... any suggestions? I was thinking stepped studs (M8 to M6) between the strut mount & chassis would give me a touch of extra negative camber... but maybe not even enough to be worth the trouble. Obviously camber plates would do it, but that's a bit much for a daily driver.

Any advantage to adding upper or lower suspension/chassis braces on the BL chassis? They make a noticeable difference on my autocross car (BG chassis!), but the 3 seems to be a heck of a lot stiffer right out of the box.
 
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