Category Archives: 2016 Ford Focus RS Rear Differential Cooler

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 4: A Tale of Two Track Days Part 1

The term “track day” around here is always surrounded with a certain level of enthusiasm. We’re all aware of the extra labor that goes into a trip to Raceway Park in Englishtown, NJ, but everyone involved is more than willing to pitch in for the chance to see our RS thrashed around the track. Think of it like one of … 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 ››

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 ››

Diff’s Hot, Take it Easy – Part 1: The Rear Differential

At Mishimoto we are big fans of our little blue car. Over the past few months you could say we have formed a bond that only burnouts and track days can build. In testing various Focus RS parts (and maybe doing a few donuts, for science) we noticed that it is very easy to make the rear differential in the … Continue Reading ››