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Thread: POLO 4 cylinder 911 engine and 1967 912 almost done.

  1. #351
    Senior Member Chris Pomares's Avatar
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    Jeff Jebate has a new POLO 2.5 that dynoed at 251 hp. At 5000 rpm’s things get very exciting. The owner of DC cams studied the results and said there is another 10 to 20 hp available.
    It’s enough to get me interested in upgrading. 240 plus hp in a SWB’ed longhood with 80 pounds less weight behind the rear axles. That would be an E ticket ride for sure.
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    Last edited by Chris Pomares; 12-08-2022 at 05:54 AM.
    1959 Auratium Green 356A Super w/ Rudge wheels
    1970 Irish Green 914-6 w/2.2S
    Current -1967 Bahama Yellow 912 POLO 2cam4 #1
    www.reSeeWorks.com
    Personalized Vintage Porsche's and parts
    I couldn't find the sports car of my dreams, so I built it myself-Ferdinand Porsche

  2. #352
    Moderator Chuck Miller's Avatar
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    Whoa !!!!!
    Chuck Miller
    Creative Advisor/Message Board Moderator - Early 911S Registry #109
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  3. #353
    Impressive figures, how does the sound compare to a 6 though?
    1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
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  4. #354
    Senior Member haul's Avatar
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    Quote Originally Posted by Flieger View Post
    Impressive figures, how does the sound compare to a 6 though?
    in the worse case like a 904…
    this is the polo sound from mr ruf.
    https://youtu.be/vht-zD3aGXM

    there are plenty of soundfiles out on the tube..
    59 750 pre unit triton
    63 650 gray silver bikinitub triumph thunderbird
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    65 912 slate gray "erwin"
    73 914 ravennagreen "ferdl"
    erwin_loves_polo

  5. #355
    Senior Member Chris Pomares's Avatar
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    This car is the first 912 series car to get one of these engines. It was installed in 2011. This video is of the engine before in was installed in my car. It has a totally different exhaust today. Heat is a good thing in Colorado. There are custom built heat exchangers now. Back in 2011 I had to make EVERYTHING one of custom. Under 3500 to 4000 it sounds like a unique 4. Over 4000 to 7200 it starts sounding more like a 6 the higher the RPM's. At sea level mine makes around 190 ish hp, not the 90 it came with. While not a 251 hp rocket, it can hang with the old slow long hood cars like a 2.4S and the early Boxster's. The engine has 23000 miles on it today. I call it a 912 SUPER.
    https://www.youtube.com/watch?v=JyWMnx1yxvc

    The chart is of another 2.4 POLO. Mine has had head work and they flow between a 3.6 and a 3.8RS heads. I'm guessing my engine makes maybe 5 to 10 more hp.
    Attached Images Attached Images
    Last edited by Chris Pomares; 12-10-2022 at 03:52 PM.
    1959 Auratium Green 356A Super w/ Rudge wheels
    1970 Irish Green 914-6 w/2.2S
    Current -1967 Bahama Yellow 912 POLO 2cam4 #1
    www.reSeeWorks.com
    Personalized Vintage Porsche's and parts
    I couldn't find the sports car of my dreams, so I built it myself-Ferdinand Porsche

  6. #356
    Senior Member Chris Pomares's Avatar
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    I've been talking to Jeff, John Dougherty of DC Cams, Jerry Woods, and a handful of other POLO engine techs that have used the latest data to get 230 to 270 hp out of this package. I will now start acquiring the needed parts over the next 12 to 18 months to make this upgrade. 250 hp in a 2100 pound car with 80 pounds less weight behind the rear axles than a 6 just sounds so appealing. Driving at 5 to 12,500 feet here in Colorado I need all the help I can get. (Mt Evans and Pikes Peak are 14,000) A small turbo would help but this is a purely a NA car.
    The thought of surprising some of the newer cars on a mountain tour puts a smile on my face.
    Last edited by Chris Pomares; 12-27-2022 at 07:13 AM.
    1959 Auratium Green 356A Super w/ Rudge wheels
    1970 Irish Green 914-6 w/2.2S
    Current -1967 Bahama Yellow 912 POLO 2cam4 #1
    www.reSeeWorks.com
    Personalized Vintage Porsche's and parts
    I couldn't find the sports car of my dreams, so I built it myself-Ferdinand Porsche

  7. #357
    Senior Member Chris Pomares's Avatar
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    I'm thinking 190 hp is enough for the first one. 10 year younger 912 POLO's should have more power than this car. And I can't make a 205 to 250 hp badge out of a super 90 badge.
    I'll keep the one on the car an make the other. 912 Super 190 might be too wordy.
    Attached Images Attached Images
    1959 Auratium Green 356A Super w/ Rudge wheels
    1970 Irish Green 914-6 w/2.2S
    Current -1967 Bahama Yellow 912 POLO 2cam4 #1
    www.reSeeWorks.com
    Personalized Vintage Porsche's and parts
    I couldn't find the sports car of my dreams, so I built it myself-Ferdinand Porsche

  8. #358
    Senior Member Chris Pomares's Avatar
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    Hmmmmmmm. Maybe.
    1959 Auratium Green 356A Super w/ Rudge wheels
    1970 Irish Green 914-6 w/2.2S
    Current -1967 Bahama Yellow 912 POLO 2cam4 #1
    www.reSeeWorks.com
    Personalized Vintage Porsche's and parts
    I couldn't find the sports car of my dreams, so I built it myself-Ferdinand Porsche

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