Category: Porsche 911 RSR

A great day for TwinSpark Porsche Racing at the HARC races in Assen today. In its first race since a Winter engine rebuild – by TwinSpark rather than outside suppliers – our Viper Green Porsche 911 RSR took third place in the Historic Touring Car race.

“I started sixth on the grid,” said Leonard Stolk, top man at TwinSpark. “In front of me were a gaggle of Escorts, behind in eighth position was Lex Proper, fellow TwinSpark partner and well known Netherlands racer. The lights go out, the Escort in front bogs down off the line, and Lex goes shooting up the middle: from eighth to second in 300 metres!

“Sadly, Lex found Woodstock developing rich running problems on the [...]

We’re racing this weekend at the TT Assen circuit, with HARC and the Historic GT Touring Car Championships. Two TwinSpark cars are on track: our Viper Green 3.0 RSR and the Light Yellow 2.8 RSR we call Woodstock.

Damaged in a minor off at Spa last month, Woodstock has now been repaired. The widebody Porsche 911 is running brand new slicks and a little something extra: the first set of Zuffenhaus RSR brakes to enter Europe.

Fitted with Pagid Blue brake pads, the RSR brakes work well. TwinSpark partner and former Porsche Cup series driver Lex Proper will race the car in this configuration, and we’ll give a full report on his findings after the event.

Bolting the calipers onto Woodstock [...]

We recently visited the US test facility responsible for batch testing of our exclusive Zuffenhaus 911 RSR brake calipers.

First impressions of the operation were excellent. This is a first class facility with state of the art testing capability.  It was interesting to note that, not only do most of the 200+ mph NASCAR teams make use of this capability, some of the leading brake system manufacturers test here too.

For example, every road and race pad compound from one highly respected brake manufacturer is tested there before they are released for production (not sure how sensitive this information is so no names, no pack drill). The type of data captured in testing includes torque, clamping force, temperature recovery time, master cylinder piston travel and hydraulic pressure.  This data is then graphically represented and the charts [...]