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Thread: Going to look at a fantastic 1973 911S tomorrow. Need a bit of advice.

  1. #631
    912->911 conversion
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    Nov 2004
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    I was going to say Ravi - I was very pleased to open the calendar and see your gorgeous car there. Well done!
    Keith Adams
    Calgary, Alberta, Canada
    Early 911S Registry #906 | PCA member IG: @912R
    1969 Blutorange 912R - 912 to 911 conversion
    1969 Mercedes 280 SE (W111) Coupe

  2. #632
    Senior Member NorthernThrux's Avatar
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    Thanks Keith! Hope the deep freeze in Alberta has passed.

    Now that winter has well and truly come to southern Ontario (it was warm and green on Dec 26th when I last went for a drive), it's time to get a few things done on Hildegard. First job was to pull the lock tumblers out of the doors, ignition and glovebox. The doors seem original, but the ignition had clearly been replaced at least twice I think. The ignition switch lock was 911.613.011.08 which I believe was a 74- later part. Now normally that would have a black face on the tumbler, but mine was chrome. When I removed it and drilled out the pin to get the tumbler out, it was clear that the tumbler had been swapped at some point. But not with the correct old one, because the key for the ignition didn't match the key for the doors. And neither worked in the glove box.

    So out it all came. Keys, tumblers, red and black DOM blanks I've collected all heading to Tony Euganeo in Pennsylvania for rekeying and cutting. Hopefully he's not as slow as I've heard. He does respond to emails in 2 days, so I'd say that's pretty good compared to what I'm used to

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    I happened to have snagged an original part ignition switch lock for the car years ago for some reason I can't remember. Part number 911.613.011.01 Identical to what was in there other than the stamping for the number, but I will replace the one that was in there with it. Might as well get it right even though no one is going to look up in behind the dash. It too looks like somebody rekeyed it since the pin that locks the tumbler appears to have been drilled out at some point, but that's an easy thing to fix once I get my tumbler back from Tony. I also bought a new electrical piece on the back of the switch from Porsche as I'd been a bit suspect of mine (turned out to be something else). The Porsche one is a perfect copy. Right down to the W. Germany embossed on the bakelite. Might as well use that since I have it.

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    Hope everyone is staying safe and warm. Happy New Year all.

    Ravi
    Early 911S Registry # 2395
    1973 Porsche 911S in ivory white 5sp MT
    2015 Porsche Macan S in agate grey 7sp PDK

  3. #633
    Senior Member frederik's Avatar
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    Great that you are doing this! I also have different keys for doors and ignition and my ignition has a black face so it must have been replaced at some point. Just one of the many items on the to-do list.
    1970 2.2S Elfenbeinweiss
    1972 2.4T Targa Aubergine (MFI) [For sale]
    2002 996 TT Midnight Blue
    Member #3833

  4. #634
    Got to get us a calendar !!

    Just going through some old paper work.
    This was the final corrected horsepower figures and data.

    222.3hp @6945
    1mm overbore with 9.2/1
    Stock ports, S cams, stock intake manifolds and stacks.
    modified valves and seat geometry.
    Uprated spring pressures in mfi pump with a modified space cam

    This motor went into the mid 230’s with larger intake stacks and a 1mm larger throttle valve test.

    CF=1.069
    1001.8mb, 51% RH, 32C inlet temp, 246m altitude

    I don’t have a clue how to add a video here!
    Cheers
    Attached Images Attached Images  
    [SIGPIC][/SIGPIC]Robert D. Groß

  5. #635
    Senior Member NorthernThrux's Avatar
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    Hey Herr Groß,
    Nice to hear from you and thanks for posting the final corrected numbers. I don't think any of us know how to post video here! Maybe a link to a youtube video?
    It is definitely a very, very hot motor. A bit of a dribble of oil from somewhere around the oil cooler, but I am only putting in 1 litre every 1300 miles, which I think is amazing for these cars.
    I'm also averaging about 12 miles per gallon Driven like it should be.

    Ravi
    Early 911S Registry # 2395
    1973 Porsche 911S in ivory white 5sp MT
    2015 Porsche Macan S in agate grey 7sp PDK

  6. #636
    Senior Member NorthernThrux's Avatar
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    Quote Originally Posted by frederik View Post
    Great that you are doing this! I also have different keys for doors and ignition and my ignition has a black face so it must have been replaced at some point. Just one of the many items on the to-do list.
    Yes the black face tumbler is for G-body and later cars. But the rest of the mechanism is identical. Porsche sells a new black face version to this day. Presumably one could sand it or something in a pinch? Don't know if it is painted, anodized or something else?

    Ravi
    Early 911S Registry # 2395
    1973 Porsche 911S in ivory white 5sp MT
    2015 Porsche Macan S in agate grey 7sp PDK

  7. #637

  8. #638
    Senior Member NorthernThrux's Avatar
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    That's 94 hp/litre from an essentially stock, but well tuned 73S. Damn. Impressive. My 1980 Saab 900 Turbo got 80 hp/l and that was considered an engineering marvel at the time!!
    Early 911S Registry # 2395
    1973 Porsche 911S in ivory white 5sp MT
    2015 Porsche Macan S in agate grey 7sp PDK

  9. #639
    Ravi, must have been a SPG ? They had a bump in power.

  10. #640
    Senior Member NorthernThrux's Avatar
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    No SPG in those days. But some Canadian and European cars had water injection (like mine) as a factory kit and that added 15 hp with slightly higher boost. Was better than an intercooler but was finicky and the water injection nozzle often clogged. I drove that car to 499,900 miles before trading it in in 1991 in Minneapolis for a Saab 9000 Aero. What a car that was too!
    Early 911S Registry # 2395
    1973 Porsche 911S in ivory white 5sp MT
    2015 Porsche Macan S in agate grey 7sp PDK

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