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    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    Nice, but I'm a little doubtful that you can add 12% more power by using a K&N air filter (most dynos show 0 hp added) and sport cat.

    Different camshafts, race headers (without heat), and re-flashed ecu would give that (or more)...

    --

    73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    Yes, the increase seems unrealistic. 


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    That would make a fun little car. Throw in 3.8 pistons and a little hotter cam and you're nearing perfection.


    --
    Past-President, Porsche Club of America - Upper Canada Region

    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    This is what a Singer is all about.  964 with old body kit.  Can't beat the concept.


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    Leawood911:

    This is what a Singer is all about.  964 with old body kit.  Can't beat the concept.

    I'm going to attempt to beat the concept - planning a 3.8L motor in my (real) 1973 911 with GT3 crankshaft and oil pump, 993 RSR cams, and over 350hp.  Advantages are much lighter chassis weight and (very light and incredible feeling) manual steering and unboosted Brembo 4-Piston brakes from 930 Turbo.  Haven't decided which intake to use (all much more powerful with better throttle response and sound than 964 system):

    This slide-valve one is best, but super pricey...

    Rothsport-FISystems-SlideValveV2-Image0b.jpg

    http://rothsport-racing.com/Products/Engine/Fuel-Injection-Systems/FI-Systems.htm


    --

    73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    You should post some of your 73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs) for us to drool over indecision


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    Leawood911:

    This is what a Singer is all about.  964 with old body kit.  Can't beat the concept.

    But unlike the Singer, this one is trying to be something it's not.  So nice as it is, it doesn't quite have the same appeal as the Singer.


    --


    Porsche Carrera GTS (2012); Porsche Cayenne Diesel (2012)


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    rhino:

    You should post some of your 73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs) for us to drool over indecision

    If you insist Smiley

    1366138726690RSExterior.jpg

    1366138829474Engine-trannythroughwindow.jpg

    136613883968373RS wheel up-lg.jpg

    136613886144573lt-interior.jpg

    --

    73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    Those pics never get oldangelangelangel Thanks Grantwink


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    rhino:

    Those pics never get oldangelangelangel Thanks Grantwink

    My pleasure - car has been sitting in the garage for a long time now (broken crankshaft on the 2.7L), so the 3.8L idea is part of a neceassary project...


    --

    73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    Sorry to hear that Grantyes It truly is a special 911. I hope it comes back better than beforewink


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    I'm really not a fan of the Black/silver two tone. A shame, because the car looks epic!

    wink


    --

    2012 Cayenne S White/Espresso 

    Ex: 993 Targa, 986S, 986 and 964 C2


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    993Targa:

    I'm really not a fan of the Black/silver two tone. A shame, because the car looks epic!

    wink

    It's not really black, it's real exposed carbon fibre (gray) with clear coat - look to the side of this photo and you can see it on the fender.  This same color gray is repeated with paint on the roll cage, wheel centers, window trim, etc.  I've had moments where I've considered painting over it to make it look more stock, but always have decided to keep it as the builder intended (looks better in person than photos).

    136620444460973lt3-fuel cell.jpg


    --

    73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    Grant:
    rhino:

    Those pics never get oldangelangelangel Thanks Grantwink

    My pleasure - car has been sitting in the garage for a long time now (broken crankshaft on the 2.7L), so the 3.8L idea is part of a neceassary project...

     

    Why not a 3.0 litre Grant? Much more rev happy. We had a 3.0 litre with TWM fuel injection that looked a lot like MFI with stacks on our race car and it was a great engine. The fuel injection made a huge difference but it looked historic enough to run SVRA and HSR.

    We did everything possible to that engine – knife edged crank, everything was polished to a mirror inside, everything that was possible to do in titanium was - rods etc., custom grind cams etc. etc… It was a race engine so not streetable but still, it made 380+bhp at 8700prm and had a 9600rpm redline. Sounded like an old F1 engine.

    The 3.8s are heavy and torque-y but you don’t need that in your light car. Go for the REVs!!! 


    --
    Past-President, Porsche Club of America - Upper Canada Region

    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    I love revs, but the weight difference between a 3.0 and 3.8 is very small (as is the cost).  The biggest difference is from the Magnesium case of the 2.7L to anything with an Aluminum case (3.0L+).  But, I don't want to use Mag case again for reliability issues.  Likewise, I don't want a motor that I have to rev so high so that I don't have to rebuild it anytime soon.  3.8L will make much more torque than high-strung 3.0L too.  But I do like revvy.  Maybe I'll compromise and go for a 3.2 Short Stroke (3.0L crank with 3.4L pistons), but I really like the idea of a GT3 crankshaft - can get them brand new cheaply (don't want to risk breaking another 40 year old crank...). And then you can also use GT3 rod bearings which are very strong and easily sourced.


    --

    73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    I love the idea of a 964 based 2.7RS replica, especially for road use rather than track use.  But this one looks too modern.  Its partly the wheel size and stance but more to do with the mirrors and lack of chrome I think.  I'm sure it can be done better than this without going to the Singer extremes.  Maybe I'll have to do some research....


    --

    Gen II Cayman S


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    GR:

    I love the idea of a 964 based 2.7RS replica, especially for road use rather than track use.  But this one looks too modern.  Its partly the wheel size and stance but more to do with the mirrors and lack of chrome I think.  I'm sure it can be done better than this without going to the Singer extremes.  Maybe I'll have to do some research....

    I agree with your observations.  The brakes on the 964 are too big for the 15" wheels that came on the 2.7RS, due to the shape of the calipers.  However, the 4-piston Brembos from the 930 Turbo (1978+) do barely fit inside 15's and are actually better than the brakes on the 964 anyways (developed for the 917 and 73 RSR).  Also, tires for 15" wheels are dirt cheap compared to the larger tires found on most modern Porsches.  My favorites are the Toyo RA-1 which are great on both road and track.

    1366303219409930 brakes.jpg


    --

    73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550


    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    '78 turbo brakes (which are 917 brakes) are certainly a great way to go. The floating rotors are getting expensive though. 

    The smaller wheels are a lot lighter as well. 

    That short stroke 3.2 sounds nice. The 3.4's can be great engines. With your weight anything above 300hp would be more than adequate. A hot 3.2 short stroke with 320-330 hp and revving up around 8000+rpm and you've got a very quick car. 

    If you do build a rev happy engine I can't reccomend the COX F1 exhaust enough. We had one done in Inconel and it was wonderfully amazing. The sound was beyond epic and it made great power. 


    --
    Past-President, Porsche Club of America - Upper Canada Region

    Re: Porsche 911 (964) receives RS 2.7 conversion kit

    Thanks!  Since its also a street car and I live in Denver, I'd like to keep heat which gets tricky with race motors (I have SSI heat exchangers now which are about maxed out with hot 2.7)


    --

    73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550


     
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