Fiesta ST MK7.5 Track car

Fiesta ST MK7.5 Track car

Author
Discussion

alex98uk

245 posts

73 months

Friday 17th April 2020
quotequote all
Not considered a full welded cage? Would stiffen it up quite a bit and you can get the dash modified to fit the front bars.

Kaveney

Original Poster:

1,305 posts

157 months

Friday 17th April 2020
quotequote all
No I'm keeping the car more club sport so it is still ok to drive on the road but also great on track as it does some long drives to track days and Europe.

I'm happy with my aet motorsport half cage at the moment and that has stiffened up the car a lot .


alex98uk said:
Not considered a full welded cage? Would stiffen it up quite a bit and you can get the dash modified to fit the front bars.

Kaveney

Original Poster:

1,305 posts

157 months

Thursday 23rd April 2020
quotequote all
Got another part installed on the car at the week end .


I have installed my new Front DNA racing rose joint drop links that are silly expensive for drop links at £ 265.00 but did a deal on them when i was getting other new bits and got them a bit cheaper .


DNA racing motor sport rose joint drop links with dirt seals and ERGAL anodized body .











Old Super pro ball joint drop links and new DNA racing rose joint drop links .










And all installed .











J4CKO

41,558 posts

200 months

Thursday 23rd April 2020
quotequote all
Cool, loving this thread, but just out of interest, whats the benefit of the updated drop links, I have always thought if they are attached and not clonking their tits off then they are good, do you adjust them or are they just stiffer to transfer the load more accurately ?

Kaveney

Original Poster:

1,305 posts

157 months

Thursday 23rd April 2020
quotequote all
They are adjustable not fixed like the stock units so can be adjusted for height .

The rose joint is much stiffer and can transmit and sustain higher loads with greater precision than the ball joint units .

The down side of them is that they are expensive and are more harsh and will transmit more NVH .

Kind Regards

J4CKO said:
Cool, loving this thread, but just out of interest, whats the benefit of the updated drop links, I have always thought if they are attached and not clonking their tits off then they are good, do you adjust them or are they just stiffer to transfer the load more accurately ?

alex98uk

245 posts

73 months

Friday 24th April 2020
quotequote all
Have you done any data logging on the car during track sessions?

I've just bought a Mountune radiator on sale atm and wondered if you'd logged what kind of differences you saw after installing yours?

I understand it's only a ~10% increase, but any cooling is good cooling on track. I also have the revised lower temp thermostat from the Ford coolant recall.

Kaveney

Original Poster:

1,305 posts

157 months

Friday 24th April 2020
quotequote all
I did have a very hard road test on the stock radiator and stock cooling before i installed the Mountune radiator and the peak temps were 96 deg with my hybrid turbo set up running 305 BHP and 319 LB/FT .

I did the same drive after fitting the Mountune radiator and cooling upgrades and the peak temps were 81 deg .

I checked the coolant temps when i did a track day at Bedford last year in 32 deg outside temps and the peak was 82 deg after around 10 laps .

I run the Mountune radiator , coolant additive , extra cooling in the front bumper and a Mishimoto racing thermostat .

Kind Regards

alex98uk said:
Have you done any data logging on the car during track sessions?

I've just bought a Mountune radiator on sale atm and wondered if you'd logged what kind of differences you saw after installing yours?

I understand it's only a ~10% increase, but any cooling is good cooling on track. I also have the revised lower temp thermostat from the Ford coolant recall.

alex98uk

245 posts

73 months

Friday 24th April 2020
quotequote all
Kaveney said:
I did have a very hard road test on the stock radiator and stock cooling before i installed the Mountune radiator and the peak temps were 96 deg with my hybrid turbo set up running 305 BHP and 319 LB/FT .

I did the same drive after fitting the Mountune radiator and cooling upgrades and the peak temps were 81 deg .

I checked the coolant temps when i did a track day at Bedford last year in 32 deg outside temps and the peak was 82 deg after around 10 laps .

I run the Mountune radiator , coolant additive , extra cooling in the front bumper and a Mishimoto racing thermostat .

Kind Regards
Thanks a lot. I have a lower thermostat from coolant recall. Was hoping to get to Bedford next month, but probably off.

Thanks for the data, useful.

Kaveney

Original Poster:

1,305 posts

157 months

Saturday 25th April 2020
quotequote all
The stock ford thermostat was a 97 degree unit and the recall new unit was a 82 degree unit .

The mishimoto racing thermostat is a 71 degree unit so may be worth looking in to if your temps get to hi but I think your set up will be fine if you are not running big power .

I was booked to do bedford a few weeks ago but think it will be a bit longer before tracks are open .



alex98uk said:
Thanks a lot. I have a lower thermostat from coolant recall. Was hoping to get to Bedford next month, but probably off.

Thanks for the data, useful.

Kaveney

Original Poster:

1,305 posts

157 months

Thursday 30th April 2020
quotequote all
Got round to getting a part on the car that i have been wanting to do for some time now in the shape of a new steering wheel .


The OEM wheel is ok but is not the most tactile feeling thing and as this is a part of the car that you touch 100 % of the time it would be nice to have a nice feeling wheel .


I did look at all the aftermarket options like OMP etc but as this is a club sport style of track car i wanted to keep as close to OEM as possible as the car still has all its steering wheel functions like cruse control , sat nav , sounds etc .


I found a company that does custom Ford Fiesta ST wheels retrimmed and with a flat bottom and other bits .


The stock Fiesta ST steering wheel .





Removing the wheel and air bag was nice and easy .





New steering wheel finished in black Alcantara all round with blue stitching and a blue ring at the top .





The stock steering wheel surround is a chrome finish and would look out of place with the new wheel so i got this re sprayed in satin black .





and all the function buttons installed in the surround .





Stock steering wheel vs new steering wheel .





And all installed .













Old OEM steering wheel vs new steering wheel .








Feels much nicer in the hands now than the stock wheel .

ianv5

5 posts

147 months

Tuesday 5th May 2020
quotequote all
Kaveney said:
Got round to getting a part on the car that i have been wanting to do for some time now in the shape of a new steering wheel .


The OEM wheel is ok but is not the most tactile feeling thing and as this is a part of the car that you touch 100 % of the time it would be nice to have a nice feeling wheel .


I did look at all the aftermarket options like OMP etc but as this is a club sport style of track car i wanted to keep as close to OEM as possible as the car still has all its steering wheel functions like cruse control , sat nav , sounds etc .


I found a company that does custom Ford Fiesta ST wheels retrimmed and with a flat bottom and other bits .


The stock Fiesta ST steering wheel .





Removing the wheel and air bag was nice and easy .





New steering wheel finished in black Alcantara all round with blue stitching and a blue ring at the top .





The stock steering wheel surround is a chrome finish and would look out of place with the new wheel so i got this re sprayed in satin black .





and all the function buttons installed in the surround .





Stock steering wheel vs new steering wheel .





And all installed .













Old OEM steering wheel vs new steering wheel .








Feels much nicer in the hands now than the stock wheel .
Have just read your post from page 1. Recently purchased an St and have done a few mods and looking at trackdays hopefully in the future! Very interested in the steering wheel, could you give me the link? Thanks.

Kaveney

Original Poster:

1,305 posts

157 months

Tuesday 5th May 2020
quotequote all
Just sent you a PM with the contact for the steering wheel .

The work from them is top class and very well made and the steering wheel looks so good and feels amazing .

Kind Regards


ianv5 said:
Have just read your post from page 1. Recently purchased an St and have done a few mods and looking at trackdays hopefully in the future! Very interested in the steering wheel, could you give me the link? Thanks.

alex98uk

245 posts

73 months

Tuesday 5th May 2020
quotequote all
If you don't mind, how much did it cost?

I guess you need to be careful or wear gloves with it now?

Kaveney

Original Poster:

1,305 posts

157 months

Tuesday 5th May 2020
quotequote all
It was £ 350.00 for the full Alcantara wheel .

I will be careful but it feels very nice .

alex98uk said:
If you don't mind, how much did it cost?

I guess you need to be careful or wear gloves with it now?

Kaveney

Original Poster:

1,305 posts

157 months

Thursday 7th May 2020
quotequote all
Time for another update on the car .


Im running on the front of the car the AP racing 4 pot caliper set up with 330 mm floating discs and Pagid RSL29 pads and this now gives the car amazing stopping power and fade free braking .



I have been running a stock rear brake set up just with new discs and pads but wanted to upgrade the rears in line with the front upgrade .



The front brakes on the Fiesta ST do most of the work but i was still looking to upgrade the rears .



After much reading and research i found out that you can use the rear brake set up from the MK1 Focus RS on the fiesta ST .



The rear disc size on the Fiesta ST is a 252 mm disc and the Focus RS rear disc is a 280 mm disc so will give much better heat transfer .



The only parts that are needed are the brake carrier and discs as you can still use the Fiesta ST caliper .



The only problem with this is that the Focus RS carrier go for silly money and are very hard to find and in good condition .



In the end i had to buy the whole rear set up just to get the brake carrier .



Focus RS rear brake set up .







And the part i need the Focus RS brake carrier that is in good condition for its age .











After a clean up and some rust protection used .







Then some Red caliper paint to finish them off .







Then some new slider pins , bolts , dust boot and lube .







Removing the Fiesta ST set up .











Fiesta ST carrier and Focus RS carrier .







Fiesta ST 252 mm disc .







Focus RS 280 mm disc .







Fiesta ST 252 mm disc Vs Focus RS 280 mm disc .







New PBS Prorace rear pads .







And all installed .




Danj8608

23 posts

195 months

Thursday 7th May 2020
quotequote all
I do hope you didn't pay Rs tax on those items?

Focus st170 runs 280mm discs too, the carriers
have become harder to find I did the same and got the rear hubs.

You can sell the hubs on to people with the mk4/5 fiesta, Ka owners as a rear disc upgrade as its a straight forward fit.

Kaveney

Original Poster:

1,305 posts

157 months

Friday 8th May 2020
quotequote all
I know anything with the word rs and the price shoots up .

Tbh finding anything was silly hard and rear brackets were going for £ 135.00 each crazy money for a bracket .

Good call on the hubs and I will see if I can sell them on and make some money back .


Danj8608 said:
I do hope you didn't pay Rs tax on those items?

Focus st170 runs 280mm discs too, the carriers
have become harder to find I did the same and got the rear hubs.

You can sell the hubs on to people with the mk4/5 fiesta, Ka owners as a rear disc upgrade as its a straight forward fit.

Kaveney

Original Poster:

1,305 posts

157 months

Tuesday 12th May 2020
quotequote all
Very small update .

I got some silicone key covers from DC3D design to go on the the two keys .




Kaveney

Original Poster:

1,305 posts

157 months

Friday 15th May 2020
quotequote all
Time for a more exciting update that i had done in February before anyone asks .


Below is the history and turbo set up on the car so far .


in 2017 i took the car to Collins performance up in Cheshire for there CP4X hybrid turbo upgrade that uses the X47 hybrid turbo .


The X47 turbo spec is below for the unit .



New 45mm Large Bore Turbine shaft with Clipped back blades
New 53mm Extended Tip 7 Blade Billet compressor wheel
CNC re-profiled compressor cover to match new X-47 billet alloy wheel
Motorsport Heavy Duty thrust bearing assembly
Modified Seal Plate to match hi-flow compressor wheel
Motorsport Specification Cut back turbine blades for high flow at high RPM



Then put the car on the dyno to see what numbers she was making .







269 BHP and 269 LB/FT



The car was very quick with this hybrid turbo and mapping only having 1060Kg kerb weight to hall along .



After looking at different mapping companys i change the softwere to an MSD Evolutions chip map .



Then again put the car back on the dyno to see what numbers she was making now .







305 BHP and 319 LB/FT



With this new map the car went very well and below is a comparison of the Fiesta ST and a BMW M2 at bedford last year .



https://www.youtube.com/watch?v=UExqVoJZUm4



This brings us on to the the new Turbo update on the car .



At the start of the year i got in contact with Hendy Performance to book the car in for there HP300 turbo kit .



The kit is the below spec but the turbo is a tweeked version of the Turbo technics S280 unit .



PERON S284 turbo
HP300 specific actuator with custom springs
Clevis pin upgrade
Lower boost pipe
HP300 recirculation kit
Bespoke silicone hoses
Vacuum reference adapter



S284 turbo spec



Turbo Technics designed larger upgraded billet compressor wheel.
Full size K04 turbine wheel upgrade.
Turbo Technics designed anti-surge ported compressor housing.
Turbo Technic’s large a/r turbine housing (nickel-alloy)
Bearing housing and bearing system upgrade (K04)
Upgraded journal bearing and shaft.
Turbo Technics 360⁰ thrust bearing assembly.
Competition seal kit.



New HP300 Kit








Old X47 hybrid turbo .















New S284 big Turbo .








The stock turbo on the fiesta st is the Borg Warner KP39 unit and has the below turbo wheel sizes .



compressor side wheel
OE Cast alloy wheel size 46.00mm



Exhaust side turbine wheel
Stock turbine wheel spec is 38.5mm




The X47 hybrid turbo has the below turbo wheel sizes .




compressor side wheel
X47 Billet alloy wheel size 53.00mm



Exhaust side turbine wheel
X47 turbine wheel spec is 45.00mm




The new S284 large turbo has the below turbo wheel sizes .



compressor side wheel
S284 Billet alloy wheel size 60.00mm



Exhaust side turbine wheel
S284 turbine wheel spec is 50.00mm



The HP300 kit was all installed in February and new Peron mapping done to suit with lower boost setting map as the car is on track 95 % of the time and i can add more boost if i want later as the S284 turbo has much more flow rate than the Hybrid units that are maxed out but the one limiting factor is fueling and how far you want to push the stock engine .


Next will be to take it back to the RR to see what she now makes on the dyno .



Kaveney

Original Poster:

1,305 posts

157 months

Friday 22nd May 2020
quotequote all
Update on the new turbo set up and dyno run .



After i had the new S284 turbo fitted in February i took the car back to Devil Developments for a dyno run to see what power and torque the car is now making with the new turbo set up .



This should give a good guide as this is the same dyno and the same month of the year that the car was run on in 2018 when the car was running the hybrid X47 turbo .




Fiesta ST on the dyno .









The dyno run was done with the bonnet shut and the car hot so may have got a bit of heat soak .




And the results .









323 BHP and 342 LB/FT running 1.5 bar of boost so not bad for a 1.6 liter 4 pot .




The car ran 305 BHP and 319 LB/FT running 1.9 bar of boost on the old X47 hybrid turbo set up .









so a peek gain of 18 BHP and 23 LB/FT over the old X47 hybrid set up i was running but this only tells half the story .




The X47 hybrid turbo set up was running 1.9 bar of boost and the new s284 is running 1.5 bar of boost so is much less stressed and has lots of head room if i want to run more boost and power .




I went through the two graphs to see where there is any gains / loss in power and torque over the old set up and put this in to a simple spread sheet .









From 3500 RPM to 6500 RPM the car is making an average of around 20 BHP and 20 LB/FT more than the old set up .




I will be running this set up this year and see how we get on as with the old set up the car was not short of pace and will be even quicker on the new set up .



Turning up the boost to around 1.7 should see around 340 BHP but this is at the limits of the stock fuel system .



Adding a fuel camsharft or performance HPFP or Aux fueling and running 1.7-1.8 bar of boost and you will see around 370 - 390 BHP .



I may look in to this in the future but at those power levels i would be looking to forge the engine despite people running 380 - 400 BHP with out any problems on the stock engine .


Just need to finish off installing a few more parts on the car and then book a track slot to see how the car goes with all the new parts fitted .