Tag Archives: focus rs

Diff’s Hot, Take it Easy – Rear Differential Cooler R&D, Part 5: A Tale of Two Track Days Part 2

At first, admittedly, it didn’t look like we were flexing as hard as we could with the Focus RS. With our full PTU/RDU cooling kit installed, we extended the time on the track with all four wheels producing power by about three minutes. However, after some reassessment, Dan transplanted the PTU temperature sensor from the gear oil into the coolant … Continue Reading ››

Diff’s Hot, Take it Easy – Rear Differential Cooler R&D, Part 3: Track Prep

When you’re hurtling towards a concrete-walled turn at over 90 MPH, you’d better know that every nut and bolt in your car is torqued to spec.
Photo: Nick Thomas
We’ve all had to prepare for something before—a date, an interview, a test. It’s always a stressful experience. Now imagine … Continue Reading ››

What’s Cooler Than Bein’ Cool? Intercooler R&D, Part 3: The Big Crunch

The movement on the 2016 Ford Focus RS intercooler project may seem slow, but it couldn’t be more alive. Our lead engineer for the project, at my request, has completed a plethora of testing configurations to get the most detailed amount of data possible. For the past three months, we have been rocking out on testing, testing, and more testing … Continue Reading ››

Diff’s Hot, Take it Easy – Rear Differential Cooler R&D, Part 2: The Master Plan

The mood for the past few days here at the Mishimoto office has been a little giddy.  Scrawled on our calendar in one of our project manager’s less than impeccable handwriting are the words “Focus RS track testing”.  There’s a lot of hard work being done, but underneath it all lies a childlike wonder for what’s going to happen in … Continue Reading ››

Tank Love – Expansion Tank R&D, Part 2: Final Reveal

I told you this project was going to move fast. In the last update, we laid down our design plans for how we will give this RS coolant expansion tank some sprucing up. Not only did we make the tank more pleasing to look at, we also increased the capacity and added a neat sight tube so you can check … Continue Reading ››