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CTMP Thursday Notebook

Ryan Myrehn’s Thursday notebook from CTMP…

Photo: Ryan Myrehn

Photo: Ryan Myrehn

***Following some confusion in the first Pirelli World Challenge SprintX rounds of the season at Virginia International Raceway last month, changes have been made in the sporting regulations regarding the minimum time required for pit stops and driver changes starting this weekend at Canadian Tire Motorsport Park.

***The minimum time from the Pit In to Pit Out timing loops will be known as the “Driver Change Time”. The minimum Driver Change Time for the Pro/Pro class remains at 60 seconds, while the minimum Drive Change Time for Pro/Am and Am/Am classes will be 90 seconds, as was the case at VIR as well.

***Any car noted by timing and scoring to have recorded a Driver Change Time below its required minimum time may be penalized. The decision of the chief timekeeper is final, with cars not allowed to slow or stop in pit lane. 

***There have been two Balance of Performance adjustments for this weekend in GT, with the Mercedes-AMG GT3 has been given a 20kg increase in minimum weight and the Acura NSX GT3 getting a slight increase in turbo boost across all power levels.

***The changes have been made since the last round at VIR, which is also a Category B track in the SRO’s track-specific BoP system. The Blancpain GT Series has yet to visit a Category B track on its schedule. Paul Ricard, as well as Spa, are Category B, which should offer a more direct comparison later this summer.

***Wholesale BoP changes, meanwhile, have been made in the GTS class, with the Maserati GT4 getting a 25kg weight increase, 100 rpm increase and ride height adjustments, as well as weight changes for the McLaren 570S GT4 (+20kg) and Panoz Avezzano GT (-20kg). Additionally, the Porsche Cayman GT4 Clubsport MR now has a 7600 RPM limit and the KTM X-Bow GT4 also has revised gearing.

***Following a hard hit in the last PWC stop at VIR, the Calvert Dynamics Porsche 911 GT3 R of Preston Calvert and Alec Udell has been re-tubbed ahead of this weekend’s race. The car was sent to Phoenix Performance in Pennsylvania, while the engine and transmission were checked over by Porsche Motorsport North America in California for a damage check and rebuild.

***This weekend, Flying Lizard Motorsports is pulling double duty, competing at Sonoma Raceway with the Pirelli GT3 Cup Trophy USA and at CTMP. With two cars in the PWC GTS class and four cars in Pirelli GT3 Cup Trophy USA, the team will be responsible for six cars this weekend across the two series.

***K-PAX and Family House in San Francisco have announced a joint effort in raising awareness of pediatric illness for the remainder of the season. Family House serves as a home away from home and a pediatric guesthouse for families of children with cancer and other life-threatening illnesses by providing physical comfort and emotional support, free from financial concerns. It serves 80 families per night and runs at almost 100 percent occupancy.

John Dagys contributed to this report.

Ryan Myrehn is an Indianapolis-based journalist and sportscaster, covering IMSA and Pirelli World Challenge. Myrehn, a graduate of DePauw University, is also the host of Sportscar365's “Double Stint” Podcast.



  1. Chris

    May 18, 2017 at 10:02 pm

    Am I the only one who thinks that the 30sec extra for pro-am teams on pit stop requirements is dumb because it prevents good pro-am teams from having a chance to compete with the pro-pro teams?

    • Kyle

      May 18, 2017 at 10:08 pm

      Totally agree. Like Black Swan with Jeroen at VIR. Kinda disappointing.

    • Justin

      May 18, 2017 at 10:08 pm

      The whole current Sprint-X format is dumb. Either fully adapt the SRO sprint format or go back to the single driver format (which I would prefer as it’s different than what everyone else is doing).

    • Matt

      May 19, 2017 at 1:16 am

      It’s really really bad. I don’t get how the Am guys spending bundles of money are content with not having a shot at the overall win. I’d be freaking out. It’s also bad for the fans, and makes the racing seem kind of pointless.

    • Jeff Wagner

      May 19, 2017 at 11:21 am

      It is 100% for safety and I agree with the extra time 100%. The Amateur drivers can’t do driver changes as quickly or as well as the pros. If there wasn’t 30 seconds extra what would happen when the amateur driver held the Pro driver up getting out of the car? OR the Amateur Driver took too long getting in the car? Without 30 seconds extra either driver would rush to make up that time and possibly leave a belt loose or not do up the crotch strap etc to save/make up the time!

      • Joe

        May 19, 2017 at 9:59 pm

        Dude are you really this much of a simpleton? All they have to do is make every car adhere to the same 90 second pit time. It’s not that difficult to comprehend.

    • Gene

      May 19, 2017 at 11:57 am

      Agree with you there.
      In the other SprintX article Gill states “a push to standardize the minimum pit stop time across all SprintX classes, is under consideration.”
      So maybe there is hope.

  2. Mike S.

    May 18, 2017 at 11:19 pm

    Everyone gets a trophy. Yeah adopt 1 time is enough. It just practice to get faster. Not like F1 where you can pay 100 guys to be in the box and change tires in 2 seconds

  3. Michael

    May 19, 2017 at 12:29 am

    Maserati gets penalized for a strong showing last event, the car has NO ABS, NO TRACTION CONTROL so let’s raise the ride height and add weight and Panoz gets a weight break and it was already fast and lo and behold Nothing for the KTM. What a joke it is when it comes to BoP for the GTS class.

    • Steve Johnson

      May 19, 2017 at 11:03 am

      I agree totally with that statement. I remember last year at Road America when they first races the car. They have worked there butts off to get where they are now just to get a slap in the face. What a shame! BOP stops or slows teams from advancing there cars potential.


        May 19, 2017 at 9:15 pm


      • Michael

        May 20, 2017 at 2:39 pm

        Yes, it’s like they are hindering the potential of the car but nothing being done to the Corvette DPi, also known as the KTM and the SIN R1. They showed they were fast all last year and nothing was done.

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