2014 Ford Fiesta ST project

Discussion in 'Fiesta ST Photos and Media' started by razorlab, Jul 21, 2014.

  1. McRib 1s Back

    McRib 1s Back Well-Known Member

    I'd say swap the pads at the track (and use R compound), but I know that's a pain. In other cars, I used the R4 street compound and it's about what you'd expect for a compromise. They're probably like your Hawk experience.

    These are very durable pads -- it's your rotors that lose. Even still, very reasonable wear. You could run a season of autox no problem, I'd guess.
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  3. Cligedy

    Cligedy Active Member

    Yep, after 80+ autocross runs and 11k miles, my oem pads still have plenty of life left.
  4. McRib 1s Back

    McRib 1s Back Well-Known Member

    I remain impressed with the stock pads. Autox leaves room for proper cool down, but road race courses hammer them. Two long track days were it on my first pair (running multiple run groups).

    The Porterfield pads improve things there, and you gain a big boost in overall braking power (at the unfortunate expense of feel).
  5. WScottCross

    WScottCross Well-Known Member

    I have about 70 runs and 30,000 miles on the original pads and still plenty of life in mine too.
  6. MonsterST

    MonsterST Member

    razor, how did the track day go??
  7. razorlab

    razorlab Active Member

    Whole bunch of updates!!!


    I almost killed myself and the car at Thunderhill. Second lap into the second session, at 110 mph in the front straight into the braking zone I lost all brakes and had a serious OHHHH FUUUUUU moment.

    Lesson learned, Wilwood BP-20's have no business being on a car that is on track. They melted and smeared all over the rotors.

    Pedal going to the floor at the end of the front straight....

    Man that seriously sucked.

    I had a set of wilwood BP-30 race pads that I put on after the incident. I SHOULD have done that before the first session but silly me thought I would be ok the first two sessions getting used to the car but the BP-20's had a different idea. The brakes where rock solid after I put the race pads in. Bone headed move on my part. I know better.

    Obligatory track paddock photo:


    Playdoh melted BP-20 pads smeared all over my rotors


    Since I am a data junky, I was really looking forward to datalogging at the track today. I have 5 sessions worth of datalogs to comb over but here is the first interesting one.

    This is a datalog of my last session of the day in the afternoon. About four full laps of a 2.8 mile course. It was about 95* ambient at the time. The hottest session.


    My selection is over the peak numbers for the datalog while on track.

    Couple things to note:

    1. Correlation between Charge Temp and Coolant temp, the plots almost mirror each other. We really need a upgraded radiator option!
    2. Intake temp. How rock steady is that mofo? Stock intake down to the paper filter. Guess it works well.
    3. Zero knock except a single 1 blip. Guess my track tune is working. ;)
    4. Oil temps. Getting toasty. From what I know from tracking Evos, cooler oil temps will also equal cooler water temps.

    More data!

    One thing this will show is that I was driving the car at about maybe 70% and I'm sure all the guys I was pointing by can attest to that. ;) It was more of a test and tune day for me since I hadn't been to the track in six years and this is a totally different platform for me, as I am used to high horsepower AWD Evos.

    Some of the things I learned was that I have a ton of cobwebs to get out and these little short wheel base FWD cars are hard to drive on track, at least compared to what I am used to!

    Btw, an old Evo friend of mine was with me at the track in his Focus ST with cobb stage 1 map. I would easily pull on him in the fast parts of the track based on pure acceleration. Was interesting to see that.

    This is my last lap of the day with Lateral G-Force and MPH. Very cool data!

    Peak lateral G of .99 in this data set. Like I said I was driving at probably 70% so I think it easily has over 1.0 G in it. I believe a stock FiST has been tested at .92? It also has more mph in at at the end of the front straight, I let off a bit as you can see here. I know when I looked at it right before my braking incident I was at 110 mph but of course my eye to brain connection can be off. ;) If I remember correctly (It's been a long time) my Evo 8 would hit about 125 or so in the same place.

    Purple is MPH
    White is Lateral G
    Positive numbers are left turns and the negative are right turns. So a -.81 would be a right turn at .81g


    I was also pretty happy that I could fit almost everything for the track in the back, with the false floor and spare removed. Especially happy how well the two fuel jugs fit. The only thing I couldn't fit is my plastic bin of essentials. Which I put in the back seat.

    I have my tool box, a jack stand, a jack, two 5 gallon VP racing fuel jugs and my folding chair in there.

    MonsterST, iLiptiKal and Joe Schmoe like this.
  8. razorlab

    razorlab Active Member

    Figured I would give an update on the BC coilovers I installed a couple weeks ago.

    I've been driving them to/from work all this week. Approx 50 miles a day. I also drove them to/from and on the track last Friday.

    The setup I went with was custom:

    7k front (392lbs/in)
    6k rear (336lbs/in)

    I also ordered it with a set of 5k rear springs (280lbs/in) just for the hell of it if I wanted to swap them in.

    For reference, the Bilstein coilovers I had on before where:

    5k front (280lbs/in)
    4k rear (224lbs/in)

    And stock:

    Front 171lbs/in
    Rear 143lbs/in

    So I basically upped the spring rate 200lbs/in front and rear.

    This is probably the upper limit of spring rate for the street. It's not super harsh but it's very firm and quick bumps and sharp drops are not dampened as much as stock or even the Bilsteins. You will get a shock. On smooth pavement the setup is smooth as silk. The resonance and oscillation of the stock suspension over freeway expansion joints and rippled pavement is 95% gone. There is a small amount of added road noise going from stock and bilsteins with OEM top mounts to the all metal BC top mounts. You really have to listen for it though.

    The car corners pretty flat with little body roll. It's not stiff enough that a bumpy mountain road upsets the car, it still works well in that situation, which was important to me.

    On track I won't review too much yet since I've only been to the track once so far with the car and with the BC coilovers. However I do feel that the dampening is only ok for the track. The car didn't feel very planted in most situations. Over all it just felt like the car was running not high quality suspension, well, because let's be honest, it's not. So no big surprise here. Not a lot of communication and feel with this setup. It's not horrible. Probably a little bit better than stock but way less body roll.

    The car was pretty neutral on track most of the time with this setup and spring rates. Next event I will play with rear tire pressures to try and dial in a little more rear play.

    The more I get comfortable with the car on track and get faster with it, the better I can give a review of the suspension. If I continue to track this car I will look for another suspension at some point, maybe KW V3 or hopefully some Ohlins R&T's if they end up making them for this platform.
  9. razorlab

    razorlab Active Member

    After talking with ATP, they have decided to offer another turbo variation for their Fiesta ST turbo kits, the GT2560R:


    You can guess which one I am going with. ;)

    The GT2560R flows about 33-35lb/min, a bit better than the smaller GT2554R at 26-28lb/min but not as larger as the GT2860R at 40lb/min+ which will be too laggy for the 1.6L

    Comp wheel: 46.50mm / 60.10mm (Ind/Exd)
    Exhaust wheel: 53.00mm

  10. Cligedy

    Cligedy Active Member

    How are you determining the oil temp? Are you getting that through OBD or do you have a dedicated sensor?
  11. razorlab

    razorlab Active Member

    I am datalogging it through the Accessport, so via OEM sensor.

    btw, as reference, a 75-80mph hwy cruise shows the oil temp at 205-210F.
  12. Cligedy

    Cligedy Active Member

    Do you know the PID that the system uses to output the signal? Would love to have access to oil temp. Pressure would be better, but beggars can't be choosers.
  13. razorlab

    razorlab Active Member

    Sorry I do not. The Accessport does not show the actual raw address's for logging.
  14. Cligedy

    Cligedy Active Member

    I knew it wouldn't be that easy. Thanks anyway!
  15. DE inc.

    DE inc. New Member

    hey razor where did you pick up your big brake kit
  16. razorlab

    razorlab Active Member

    TCE Performance.
  17. DE inc.

    DE inc. New Member

    And what size are they if you dont mind me asking
  18. razorlab

    razorlab Active Member

    6 piston calipers
    12.19x.81 rotors
  19. Neuton

    Neuton New Member

    Muito bom.
    DE inc. likes this.
  20. razorlab

    razorlab Active Member

    Another track day under my belt in the FiST.

    Weather was amazing this time around. Mid 60F as the high, 50's in the morning. Sunny. What a difference from the 98F day last time.

    Slowly getting my track legs back and getting used to the car. I went six seconds faster this time around, getting there, slowly but surely. The car still has a good amount left in it but I'm taking it slow as I still have six years of track cobwebs to clean out. Tried a couple different ways to drive the car this time with different success. I can tell once I get fully comfortable with car I will want to loosen up the chassis. Right now it's pretty darn stable but I can tell it will be faster with the chassis set up looser.

    Now that I'm going faster in it I can predict a LSD could be in my future if I keep tracking the car. It would do some really weird hopping stuff in hard third gear corners on power and I would even get some wheel spin in 4th on track out in some places. That and not being able to put power down in off camber corners started to get a little frustrating, especially coming from tracking an AWD Evo.

    I also think I need to get an exhaust of some sort as the car is way too quiet on track with a helmet on, hard to judge the RPM.

    I used the GoPro for the first time this event too. You can see from my video I didn't mount it in a great spot to see all the track. You get to see my mug though. ;) I will try another angle next time. Scroll down to the end of this post for the video if you are interested.

    Now, more data!

    First, some engine data logs. Here is an overlay of a session from this event with an overlay of a session from last event. It's fairly obvious it was a much cooler day by the charge temps. Huge difference! The interesting data to note is that coolant and oil temps show a much less difference. They are obviously cooler this time but not by much!

    Blue plots are from last event in 98F weather
    Red plots are from this event in 65F weather


    Next up is G-force. One lap. Lateral and Lineal. You can tell pretty quickly from looking at this overlay that I was much quicker this time and that is shown in the offset. Also note higher Lateral G's of 1.02 max compared to .99 before.

    Left and right Lateral G's are shown as positive/negative.
    Accel and Decel Lineal G's are shown as positive/negative. Note much harder braking this time.

    Blue plots are from last event
    Red plots are from this event


    Here is the video. Unedited. One session. As noted camera position sucks and the car is way too quiet. First lap is my warm up lap so you can forward to the start of the second if you wish.

    Ylli, kamakazee and Mr UFO like this.
  21. Removed

    Removed Guest

    Which lugnuts are those? I have the same wheels but TireRack sent chrome ones.

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