Active aero, mid-mounted flat 6 pushing out 1400hp at sea level, 1100hp at the Pikes Peak start line and 900hp at the top of the mountain. What does that all mean?
NOTE: This was filmed before the sudden and sad passing of driver Ken Block in early 2023. RIP to a motorsport and performance industry legend.
Betim Berisha gives us the rundown on the 1+972-ish Porsche SVRSR “Hoonipigasus” Open Class Pikes Peak Hillclimb build which runs a modified Porsche GT3 R 4.0L flat 6 engine cranking out 900hp to 1400hp, depending how far up the side of a mountain you are.
Why an early 70's Porsche based design via Joe Scarbo was used is discussed along with some of the challenges relating to a mid-mounted engine setup as well as aero packaging advantages via the 6000 pound of downforce at 160mph via CFD goal Verus Engineering had, and how that stacked up (well) in reality.
As discussed elsewhere the 2022 attempt at Pikes Peak sadly ended with engine failure which BBi and associated partners have not hidden away helping us all see that no matter the budget and level we're working to sometimes things can and will go wrong. Most importantly GSC Power Division has since done the work to identify and solve 2022's weak link in the valvetrain, but more testing is required to develop the car further, as there is always a wink link somewhere to find, fix and or manage/adjust.
Electronics wise the car runs two MoTeC M142 ECUs and a Bosch PDM which are taken care of by Sander over at Obsidian Motorsport Group who we have talked with via the 051 Tuned In podcast on this build previously too with wiring via KSV Looms.
2022 SPECS:
- 1400bhp, 9000rpm, Methanol Fuel
- 4.0L BBi Developed 2017 Porsche GT3 R engine. (Aftermarket CP Pistons, Fortified Rods, OEM liners + intake and exhaust manifold changes for turbocharging)
- Twin Garrett Motorsport Turbochargers
- 3 Injectors per Cylinder. 1 Direct Injection, 2 Port Injection making for 18 Injectors, 4 Throttle Bodies, 2 Electronic Wastegates & a Full Sensor Package
- 2 x MoTeC M142s & Bosch PDM Setup
- Scarbo Performance Tube Frame Chassis
- KW Automotive 4-way Dampers
- Active Ride Height System
- SADEV Sequential Gearbox, Transfer Case and front Differential.
- Full-Time AWD
- PWR Radiator
- PFC Brakes Forged Lightweight Calipers Using Carbon Ceramic Rotors
- Obsidian IMU for traction control, vehicle dynamics management
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TIME STAMPS:
0:00 - Betim Berisha - BBi Autosport
0:27 - Joe Scarbo: An Ideas Man
1:10 - Design Evolution
1:25 - Street To Pikes Peak
1:37 - Why Mid Mount The Engine?
4:00 - Why Start With A 911?
5:55 - Tube Chassis Direction Vs Timeframe
7:01 - Deadlines: Good or Bad?
8:02 - Aero Setup For Pikes Peak
9:46 - Active Ride Height: Geofenced
12:42 - Development Only Just Starting
13:36 - Things Do Go Wrong, Mistakes Can Happen
14:40 - Porsche GT3-R Valve Float
17:09 - Valve Float Quick Explanation
17:25 - Solution Process Via GSC
18:20 - Required Upgrades & Output For Turbocharging
20:02 - Is 1100hp Enough for Pikes Peak?
21:38 - Engine Durability Testing Schedule
22:03 - More Time For Testing Possible Now
24:02 - RIP Ken Block =(
24:54 - Pikes Peak Rough Expectations
26:15 - Cheers BBi Autosport For The Chat & Epic Builds
26:43 - Free EFI Tuning Lesson. Dive On In!
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