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Thread: The Ultimate 2.8 RSR Thread

  1. #1
    Senior Member Fubawu's Avatar
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    The Ultimate 2.8 RSR Thread

    Hi

    I had searched for racing results and the history of the RSR but with very little information on
    early S. I was hoping to have a similar "Ultimate thread"

    That being said, considering the RSR 2.8 was a one year only car the production numbers are low..

    My first question, does anyone know of non factory cars that were converted to RSR specs for IMSA or Euro championships.
    Similar to what we saw with the ST builds being done on numerous chassis types?
    Last edited by Fubawu; 09-18-2019 at 02:16 PM.
    911 1972S 2.8 Race car SOLD
    911 1972T 2.5
    911 1965 300760 SOLD
    911 1971S S/T 2.5
    914-6 1970 GT 2.5
    Look for me at a track near you!
    Early S Reg #2699
    https://www.facebook.com/#!/MachineMotorsports

  2. #2
    Senior Member patrick911's Avatar
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    Would be great to have a thread for RSRs similar to the Ultimate ST thread.
    I did notice there's not a lot of info here on those cars, which is why I've been adding my findings in my replica build thread.
    I'm sure there's other cars (RSs maybe?) that were updated with (some of the) M491 options during the 1973 and 1974 seasons, but as the factory development during 1973 was focussed on the group 5 (prototype) factory cars, I know that some of the IMSA racers weren't allowed some of those modifications.
    Anyway, looking forward to this! Hope and expect that people like Starkey & Hugh can add some info here.
    Member #3058
    1973 911 2.4T
    1976 911S -> 2.8RSR rep

  3. #3
    Senior Member Fubawu's Avatar
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    Exactly Patrick, odd that there has not been a dedicated thread.

    I'm interested in factory cars. UT I'd like to see what the "Garage racers" did in period. There must be a few converted cars. I'd really like to see there take on a M491 setup.

    I do know of one car a 65 that raced as a 73 RSR then short hood in the early to mid 70's. It sold on Pelican 2008 range.

    I was curious as to suspension setups. Did they simply leave the torsion set up and go with the larger 2.8
    911 1972S 2.8 Race car SOLD
    911 1972T 2.5
    911 1965 300760 SOLD
    911 1971S S/T 2.5
    914-6 1970 GT 2.5
    Look for me at a track near you!
    Early S Reg #2699
    https://www.facebook.com/#!/MachineMotorsports

  4. #4
    Who opens the Ultimate 2.8 RSR thread?

  5. #5
    Moderator Chuck Miller's Avatar
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    Thumbs up

    Easier done then said.... Please carry on gentleman....

    Here's a few I have in my garage
    Attached Images Attached Images
    Last edited by Chuck Miller; 09-19-2019 at 07:36 AM.
    Chuck Miller
    Creative Advisor/Message Board Moderator - Early 911S Registry #109
    R Gruppe #88

    TYP901 #62
    '73S cpe #1099 - Matched # 2.7/9.5 RS spec rebuild
    '67 Malibu 327 spt cpe - Period 350 Rebuild

    98 Chevy S-10 Utility
    15 GTI Commuter

  6. #6
    Senior Member Fubawu's Avatar
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    73 rsr auction.JPG

    VIN 9113600756
    Gearbox 793 1024

    Southeby's Auction site

    Based upon the exclusive and already lightweight Carrera RS 2.7, the RSR 2.8 was offered by Porsche from 1973. A further 80 kg was trimmed from the RS, while the nominal capacity increase of just 119 cc belied the myriad technical changes within. Bigger valves, twin-plug ignition, raised compression ratio, and extensive lightening of internal components contributed to an increase from the 210 bhp of the RS to over 300 bhp. Wider Fuchs wheels and wheel arches, as well as a low-level front air dam with integral oil cooler, gave the RSR a much more aggressive disposition.

    One of just 55 RSRs constructed for the 1973 season, this example was completed in February of that year and was immediately entered to the 12 Hours of Sebring in March by its owner Grey Egerton. Entered by Far West Racing, and with sponsorship from Pharr Yarns, Castrol, and Cibie, Egerton was partnered with SCCA and Trans Am rising star Elliot Forbes-Robinson.

    After qualifying a respectable 7th, they went on to finish 4th overall at the notoriously hard Florida track representing an excellent inaugural outing for the team. Next up was the Watkins Glen 6 Hours then a round of the World Sportscar Championship. Unlike Sebring, the race featured a full complement of works 3.0-litre sports prototypes, including three Ferrari 312 PBs, two Matra MS670Bs, and two Gulf-Mirage M6s, as well as a pair of ex-works Group 5 RSRs from the Penske and Brumos teams. Qualifying 5th in class, they enjoyed another solid run to finish in 11th place overall and 3rd in class.
    911 1972S 2.8 Race car SOLD
    911 1972T 2.5
    911 1965 300760 SOLD
    911 1971S S/T 2.5
    914-6 1970 GT 2.5
    Look for me at a track near you!
    Early S Reg #2699
    https://www.facebook.com/#!/MachineMotorsports

  7. #7
    Moderator Chuck Miller's Avatar
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    Thumbs up

    Another photo of the car from the race...

    From the book:
    Sebring The Official History of America's Great Sports Car Race
    By Ken Breslauer

    Photo by Tedd Liggett
    Attached Images Attached Images
    Last edited by Chuck Miller; 09-19-2019 at 12:44 PM.
    Chuck Miller
    Creative Advisor/Message Board Moderator - Early 911S Registry #109
    R Gruppe #88

    TYP901 #62
    '73S cpe #1099 - Matched # 2.7/9.5 RS spec rebuild
    '67 Malibu 327 spt cpe - Period 350 Rebuild

    98 Chevy S-10 Utility
    15 GTI Commuter

  8. #8
    Senior Member beh911's Avatar
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    9113600756.
    Last fall at RM Sotheby's auction at PEC in Atlanta.
    We were drivers for the auction lots (fellow ESR member at wheel).

    1969 S Coupe #761
    Early S Registry #1624

  9. #9
    Senior Member Fubawu's Avatar
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    where's all the knowledge??
    911 1972S 2.8 Race car SOLD
    911 1972T 2.5
    911 1965 300760 SOLD
    911 1971S S/T 2.5
    914-6 1970 GT 2.5
    Look for me at a track near you!
    Early S Reg #2699
    https://www.facebook.com/#!/MachineMotorsports

  10. #10
    Senior Member
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    The last poster in Chuck's list rightly celebrates the 2.8 RSR's mighty wins at Daytona and Sebring at the start of the 1973 season. Daytona was #0328, Sebring was #0705, but the car pictured on the poster is #0727. I wrote about Peter Gregg's various RSRs - I reckon he owned or drove as many as nine - in a Classic Porsche magazine column late last year. Shameless plug over!

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