Tips,Tuning,the,Carburetor,How car Tips to Tuning the Carburetor (1)
In the shape of the design, the Core wing broke through the traditional appearance of the other models, the Core-wing sense of movement and high-level sense of the high degree of balance, which must be improved, both in the interior styling General Lee: For such a TSP platform, indeed, is the test of the ability to integrate the same time, just She always has been mentioned in the business platform is a completely independent intellectual property platform and our platform is t
Howdid Harley carburetors progress from their primitive beginnings to thestate-of-the-art CV design they use now?Iknow the answer because I played a role in the process. Backin the early 1970s, I was working in Southern Californiaand getting pretty burned out tuning stock Harley carbs. So were otherhard-core H-D engine builders in the area.Someof us decided to look for a cheap replacement. A couple of guys went out to aforeign car boneyard and picked up two SU carbs from an old British sedan. TheSU carb, made in England,was an advanced design for its day. In the 70s they were readily available insizes from about 1¾ to 2,depending on what kind of British rust-bucket you scavenged them from. Thetricky part was tuning the things. This carburetor was unique in that it wasdesigned to meter the fuel and the air simultaneously by using a piston andneedle with the standard manually operated butterfly. This design is now knownas theconstant velocity (CV) carburetor, and its used on motorcyclesalmost universally. Butit wasnt back then.Ittook a couple of years of trial and error testing but we finally got the tuningof these SUs right for Harley-Davidsons. Gradually the word spread from thetuners to the dealers and manufacturers, who talked to their connections, until. . . SU in Englandannounced a CV carburetor especially for the Harley-Davidson motorcycle! TheirCV carb looked a hell of a lot like the ones we developed, and when properlytuned gave more horsepower and better gas mileage with no transitional flatspots. Just like ours! About20 years later the H-D factory figured it was about time to put a CV on theirnew models. When I see one I think to myself, Thanks, pals. Nice work, Perry.Latercame electronic fuel injection (EFI) and another new tuning challenge.Thesolution to H-Ds early EFI is laid out in the May 1997 issue of Hot BikeMagazine. I am proud to say that FLO Headworks played the leading role in thatproject, too. Andsince that date we have managed to pick up another seven horsepower with anotherwise stock displacement 80 C.I. engine with 8:1 compression, using myblueprinted CV Keihin carbs and 700cfm air filter kit. Sofar SU havent sent me any checks, and I havent got any thank-you letters fromthe engineers at H-D either. But my customers are happy, and thats been themost important thing for me over the past 25 years. Find out more about Toyota 4AF carburetor by visit miparts.com.
Tips,Tuning,the,Carburetor,How