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  1. Paul Proefrock

    Can someone pull together some historical (this site) loose ends

    In reading the various threads on this site, I have come across references to space-frame plans by a person called Mike Osbourne (Osborne). There is a current thread referencing the sale of a set of plans and the fiberglass components by a gentleman in Canada that also references this. A quick...
  2. Paul Proefrock

    superformance GT40 in St. Louis

    Stop by a shop in St. Charles, a suburb of Saint Louis - Fastlane Classic Cars. Dave Williams (Owner) has the original Superformance GT40 test mule/prototype as his personal car. It sits on his showroom floor. He may have others on display. You and your son will enjoy the showroom...
  3. Paul Proefrock

    Engine management systems

    Joe I am running a Borla System using a Performance Electronics ECU, very happy with the performance. A some tips for you 1) Don't try to 'cheap out' on the system. To be successful, the Individual Runner EFI system needs a number of tuning features that often are left out to reduce cost. The...
  4. Paul Proefrock

    RCR GT40 THROTTLE ISSUES...

    Kim You don't say for sure but I get the impression the cable center is a single wire, not a stranded cable. Is that correct? Would you not be better off with a cable that uses a stranded center core? It would follow the snail of the bellcrank. As I worked on my cars, I came to learn that...
  5. Paul Proefrock

    RCR GT40 THROTTLE ISSUES...

    Kim Generally, it is the pedal ratio's that are at fault. In mechanical linkages, you can play with the various arms. In a cable linkage, you can only adjust the pedal or the balcrank. You might pick up a little at the balcrank, but generally there isn't much material to work with. Moving the...
  6. Paul Proefrock

    RCR GT40 THROTTLE ISSUES...

    Kim I will add to the comments. I have two Borla EightStack systems on Cobra roadsters. The systems are 100% unforgiving of any linkage issues. The torsion springs in the throttle bodies DO NOT provide enough force/leverage to close the plates and makeup for any inadequacies of the linkage...
  7. Paul Proefrock

    Hacking an IDA 'Weber', turning it into EFI

    Randy I disagree with your comment. I had a 1st Gen Borla EightStack system that was very similar to this. Could not get a low idle (wanted to stay at 1500rpm) and it was caused by poor-fitting throttle plates. Borla reworked the system for me and was able to get the idle down into the low 900...
  8. Paul Proefrock

    Anyone ever used Stack Injection ITB setup?

    Webers change the sound of an engine compared to plenum manifold carburetion. The change to Individual runners did tend to take some of the rumpty rump out of the cam. Changing then from Weber to fuel injection/Weber style had no change to the sound. This is what I noticed when I went along...
  9. Paul Proefrock

    GT40 Enthusiasts Group - value to USA member

    I am curious about the value of the GT40 Enthusiasts Group to someone residing in the USA. My interests are focused on the history and technical aspects of the car. Social events and driving in Great Britain, while interesting, do not fill my cup. Is my $50 annual investment of value? I post it...
  10. Paul Proefrock

    Capacitance Fuel Probe / Sender

    take a look at http://centroidproducts.com/
  11. Paul Proefrock

    USA- Tornado builders/owners

    Would like to see a Tornado up close and personal. Curious where they are and the owners. I am aware of Scott Calabro and Bob Woods. How many more still frequent this forum. Would you post your location Thanks Paul
  12. Paul Proefrock

    GT40 Manufacturers

    The GT40 replica market is fairly small, there are but a few manufacturers. Many have come and gone. As I search to see where is the best value, I am coming up with this list of suppliers (I have not included those who no longer produce or supply) SouthernGT http://www.southerngt.co.uk/...
  13. Paul Proefrock

    Roadster replica?

    Dwight, Thanks for the lead, I am in the Saint Louis area and often traveling thru Columbus. I'll talk to my contacts at the Ohio Cobra Club and see who he is Paul
  14. Paul Proefrock

    Roadster replica?

    I am pursuing a GT40 build, seriously considering doing a replica of one of the 5 roadsters. Tried a site search but most of hits using 'roadster' in the term brought up discussions of the owner's cobra roadster. Not the same. I've built a couple Cobra's and think this might be a fun project...
  15. Paul Proefrock

    US GT40 build wanted

    USA builders, Do you have a GT40 build you haven't started/finished you want to get out of? Let me know what you have and where you're at, both on the build and your location Paul Proefrock Saint Louis
  16. Paul Proefrock

    RCR at PRI Indy.. Any SL-C owners / builders going?

    Fran surely has better pictures, but this will help the curious til he posts them Paul
  17. Paul Proefrock

    GT40 new build - Sources?

    Were I to tackle a new GT40 build, what are my options for kits, assuming I want a kit and not a roller: RCR 40 Tornado GT Forte Others? I am in the central US (Saint Louis) and any foreign option is complicated with freight and packaging, (and remote customer support?) Any...
  18. Paul Proefrock

    Dean's GT-R build thread

    Dean Holler the next time you're out playing with all the wire. I'll be happy to watch/help Paul
  19. Paul Proefrock

    EightStack Fuel Injection Ignition Table

    Thanks Andrew, very helpful I know this is a roadster but the setup would work very well in a GT40. EightStack and Performance Electronics is a great combination. Great old school looks, great performance and starts like a dream. and the icing on the cake, my first cruise netted me 16.5 mpg -...
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