Porsche 911 Carrera RSR 2.8 lap time at Ontario Motor Speedway

Image of Porsche 911 Carrera RSR 2.8

1973 Porsche 911 Carrera RSR 2.8 completed a lap of Ontario Motor Speedway in 2 minutes and 17 seconds.

Track Ontario Motor Speedway
Type flying start
Vehicle Porsche 911 Carrera RSR 2.8
Power / weight 284 ps / 876 kg
Time 2:17.000
Average speed 135 kph (84 mph)
Submitted 18.03.2021 by Hoppelmoppel123
Source Road & Track magazine (United States)
Views 184

Reference:   Image of source Road & Track - 8/1973

Porsche 924 Turbo2:03.40-13.6
Maserati Merak2:04.10-12.9
Lotus Esprit S12:04.70-12.3
BMW 633 CSi2:06.40-10.6
911 Carrera RSR 2.82:17.00
Porsche 911 S 2.42:34.00+17.0
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FastestLaps  9m ago

I suspect there might have been some differences between 1970s and 1980s version of this track. Could even be things like different surface grip. To me this laptime does not look compatible with the ones from Popular Mechanics.

 

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DodgeHEMI426  9m ago

Agree, fairly sure a 911 RSR 2.8 could beat a 924 Turbo.


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196ss  9m ago @DodgeHEMI426

11 years between this laptimes, tires much improved in this period, possible little track layout changes, more grippy pavement. Also Popular Mechanics test driver could be faster than Car&Driver.
With all things being equal Carrera RSR very possible could be at the top since it's literally a race car.


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Hoppelmoppel123  9m ago

Ontario Motor Speedway was closed in 1980, there was only one layout.


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FastestLaps  9m ago @196ss

I know tyres have improved dramatically over decades, but the 911 RSR has basic power/weight ratio so much higher than some of the cars from 1980s list that I find it hard to explain this underperformance just by old tyres. It could be that driver was not super competent (Popular Mechanics had pro race drivers doing the laps) and there were some changes to the track, maybe not fundamental layout changes, but maybe different surface or track was widened, or maybe some cheeky chicane was added in the 70s test.


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196ss  9m ago @FastestLaps

Looks like C&D tester screwed up, since in 1974 at a racing event Peter Gregg in Carrera RSR completed 118 laps in 4 hours. That's about 2 minutes a lap average:

https://www.racingsportscars.com/results/Ontario-1974-05-19.html


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DodgeHEMI426  9m ago @196ss

Definitely, there's lots of variables. Still I'd be surprised (and also a bit disappointed) if a RSR wouldn't be able to beat the lackluster 924 Turbo.


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196ss  9m ago @DodgeHEMI426

In order to drive fast in the 911 (especially if we are talking about old 911s), it takes some time to adjust and develop certain skills. Car is very different in behavior from what the US testers of the 60s and 70s were used to. It also requires a certain amount of courage - you can brake later and keep the speed in the corner faster, but the cost of error also increases. A friend of mine used to have a 930 Turbo, so this is how he described its balance at speed: "a sledgehammer flying with the handle forward." Therefore, I think in the hands of an experienced race driver, familiar with 911s, Carrera RSR would destroy 924T on tracks. For the non professional driver, the time of 924T might have been better.


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Ferdinandpeach  9m ago

Handling technology sure advanced 1973-1978. Unusual to see Porsche crushed in a contemporary comparison