Official Fiesta ST Lap Time Thread

[DaleFredriks]

Buttonwillow 13CW 2:18.5
First time on this track
Ambient temps from 80-107°

Cobb intake, intercooler, AP with stratified 91 tune.
Mountune radiator and lowering springs
Stock brakes with Motul RBF600 fluid
205/45 Re71r on 16x7 Sparco Assetto Gara
Semi-stripped interior (rear seat delete, sunroof delete, no headliner, Sparco F200 bucket seat)

 

[Erick_V]

Buttonwillow 13CW 2:18.5
First time on this track
Ambient temps from 80-107°

Cobb intake, intercooler, AP with stratified 91 tune.
Mountune radiator and lowering springs
Stock brakes with Motul RBF600 fluid
205/45 Re71r on 16x7 Sparco Assetto Gara
Semi-stripped interior (rear seat delete, sunroof delete, no headliner, Sparco F200 bucket seat)

How did you go about deleting the sunroof? I’ve wanted to do the same

 

[ronmcdon]

Laguna Seca CCW 10-23-21
1.52.577

stock boost (something wrong with car where cannot get above 21 psi)
16x8 +38 rpf1 wheels, 225/45 dunlop z3 200tw tyres, meister gt1 coilover w 8k/6k swift springs, approx -3 front & -1 rear camber, all around tb bracing, polyu powerflex front control arm bushings, dna solid rear torsion bushing, wavetrac lsd, all around vibra technic mounts.

 

[ronmcdon]

forgot to mention, great 65f weather and settled on 41psi front and 40psi rear, hot tire pressures.

much better tire wear and no rollover compared to 33-35 hot tire temps

 

[M-Sport fan]

Laguna Seca CCW 10-23-21
1.52.577

stock boost (something wrong with car where cannot get above 21 psi)
16x8 +38 rpf1 wheels, 225/45 dunlop z3 200tw tyres, meister gt1 coilover w 8k/6k swift springs, approx -3 front & -1 rear camber, all around tb bracing, polyu powerflex front control arm bushings, dna solid rear torsion bushing, wavetrac lsd, all around vibra technic mounts.

With whatever ride height you are at with those coil overs/spring rates, and that camber, are you rubbing that setup at all, anywhere, under any conditions (braking while turning in the 'corkscrew' or elsewhere, even though you are not supposed to be doing that for fast times, power on at apex exits, wheel lifting turns, etc.) with that wheel/tire setup, on that track?

 

[DaleFredriks]

How did you go about deleting the sunroof? I’ve wanted to do the same

I just now saw this response. I basically did this exact thing on my car.

View: https://youtu.be/XrQ0xPoTBLI

Sent from my IN2025 using Tapatalk

 

[slyez]

moving our lap time updates to a different thread for ease and centralization:
https://www.fiestastforum.com/threads/fiesta-st-nasa-tt5-build-ish-results-videos.28020/

 

[ronmcdon]

With whatever ride height you are at with those coil overs/spring rates, and that camber, are you rubbing that setup at all, anywhere, under any conditions (braking while turning in the 'corkscrew' or elsewhere, even though you are not supposed to be doing that for fast times, power on at apex exits, wheel lifting turns, etc.) with that wheel/tire setup, on that track?

yes theres very slight rubbing that happens when I park and steering at full lock. usually its a mild pop. didnt have any rub when my camber was -2 front, -1 rear. no rub anywhere on Laguna Seca (or Streets of Willow) No rub even right before the corkscrew and had coaching on where on the lines to take at Laguna.

should also add my fenders are rolled and slightly pulled.

if I had to guess, the rub might be from bolt inside the front fenders which I will eventually trim down.

btw - Laguna is a fantastic track. very addicted and going back in dec with my cahmero

 

[Jabbit]

I just now saw this response. I basically did this exact thing on my car.

View: https://youtu.be/XrQ0xPoTBLI

Sent from my IN2025 using Tapatalk

How much weight did you save? Any pictures from the inside? Did you leave it like that on the outside or try to blend it?

 

[M-Sport fan]

yes theres very slight rubbing that happens when I park and steering at full lock. usually its a mild pop. didnt have any rub when my camber was -2 front, -1 rear. no rub anywhere on Laguna Seca (or Streets of Willow) No rub even right before the corkscrew and had coaching on where on the lines to take at Laguna.

should also add my fenders are rolled and slightly pulled.

if I had to guess, the rub might be from bolt inside the front fenders which I will eventually trim down.

btw - Laguna is a fantastic track. very addicted and going back in dec with my cahmero

THANKS!

Just trying to get a read on how badly that size A052s (like 0.1" wider tread width, same section width, 0.2" taller than the Z3s,) on a 16x8, 40ET Dekagram will rub on a factory ride height, minimally cambered, and un-pulled fender, un-trimmed fender mounting bolt FiST.

 

[DaleFredriks]

How much weight did you save? Any pictures from the inside? Did you leave it like that on the outside or try to blend it?

Not sure exactly, I'd estimate the stock sunroof components as maybe 40ish lbs, but I did not weigh it, and in my case it wouldn't have been a fair comparison cuz what prompted me to do this was my sunroof breaking in the first place.
I left the exterior as is, I kinda like the industrial, racecar vibe it gives the car. I've thought about painting it at some point, but unsure.

Sent from my IN2025 using Tapatalk

 

[DaleFredriks]

Couple updates here.
1. Chuckwalla Raceway (Sept 18, 2021)- 2:15.345
No changes in mods from Buttonwillow back in July. First time on this track on a super hot day.

2. Streets of Willow Springs CCW (Nov 5, 2021) - 1:29.506
Only change was running 215/45/16 BFGoodrich Rival S 1.5 tires on the 16x7 Sparcos.

3. Willow Springs International Raceway AKA Big Willow (Jan 15, 2022) - 1:39.072
Only change was running the same BFGoodrich tires on new 16x8 Konig Dekagrams.

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[benvid]

Got a new one: Thunderhill West 1:31.4 (Stock)

View: https://youtu.be/ZMTJwACicIA

 

[DaleFredriks]

Chuckwalla CW - 2:10.069
No change in mods from my last post.
Sent from my IN2025 using Tapatalk

 

[DaleFredriks]

Buttonwillow Raceway Park 13CW - 2:09.729

No change in mods, high of 85°, car overheated right after my fastest lap. Need a thermostat and oil cooler for sure

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[DaleFredriks]

Streets of Willow Springs clockwise - 1:27.9

Horse Thief Mile - 1:06.6

No change in mods from previous posts other than actually using stock brake pads

Sent from my IN2025 using Tapatalk

 

[WannabeST]

Took my 100% stock 2017 fiesta SE on big willow on 650TW tires with 28k miles on them and did a 1.53

 

[shreddie van halen]

Buttonwillow: 13CW 2:09.415

s280 on 91 octane with full Interior
M factory lsd
Rt660
St xta coil overs with track alignment and corner balancing.

The car got really hot at the tail end of the day and I realized later that it still had a bubble in it. I think this car currently is capable of a 2:05. I’m leaving some in the table with my braking reservations. I need to get more comfortable there and getting to the limit.

 

[DaleFredriks]

2:06 at Buttonwillow CW in April, see video description for mod list. (tl:dr; stock turbo, full bolt ons, suspension and weight savings)

View: https://youtu.be/A62qE7s79rk?si=J3r2xybbI6M0z4Qk

 

[DaleFredriks]

2:09 at Thunderhill East in late April, mod list in video description. (tl:dr; stock turbo, full bolt ons, suspension and weight reduction)

View: https://youtu.be/aXXtoCMvlGY?si=AtPkppWLhLjRNqRT