Why introduce metallic-sintered materials to a regular clutch assemblies?

Why introduce metallic-sintered materials to a regular clutch assemblies?

Written by Moore Good Ink Columbia, SC: Launched in 2010, Ram’s Force 9.5 dual-disc units are not new. What is new, however, is by combining it with their 900 series friction disc, the clutch assembly’s capacity is increased from handling around 700hp to around 950hp. These new clutches fit all popular applications, including Corvette, Camaro, Mustang, and early muscle cars. Using a metallic-sintered iron-based material that is compressed under high heat to bond it to the backing plate, the 900 series disc has a higher coefficient of friction than the standard organic materials. Thus it combats heat better and offers increased holding power. Also relevant is its light weight and that it operates with a six-spring hub instead of eight. The Force 9.5 is small and remarkably light—weighing approximately 38lbs compared with, for example, the standard LS arrangement, which weighs around 57lbs and measures 11.750in. This combination of compact size and light weight hastens engine response. The effects of faster acceleration and deceleration are unmistakable. Devised as an economical, entry-level unit, Ram’s Force 9.5 is guaranteed to meet the exact height dimensions of the original factory clutch-flywheel assembly, thus it’s a direct bolt-in fit. The Force 9.5 cover assembly with metallic-sintered 900-series clutch plate is priced around $1175 while the organic version is $950. For further information contact: RAM Automotive Company 201 Business Park Blvd. Columbia, SC 29203 Telephone (803) 788-6034...

750 Street Demon carb adds capacity

By Ben Mozart Dawsonville GA: The recent 750cfm Street Demon carburetor’s additional capacity was created to suit more powerful engines. When the original 625 Street Demon was launched in May 2012, it was greeted with much approval—the only thing conspicuously missing, said some, was greater flow capacity. In appearance the bigger 750 looks identical to its forerunner, except for the size of its primary throttle valves, which have been enlarged in diameter from 1-3/8th to 1-11/16th. The main venturii diameter has also been enlarged. Predictably the calibrations have also been increased. The secondary throttles, which are controlled by the Goggle valve, remain unaltered. An innovative device located at the bottom of the secondary bores, the Goggle valve delivers over twice the air flow of the primary bores. It maintains an invigorating effect that can be both felt and heard. Located at the air horn is an adjustable torsion spring-controlled air valve. Its function is to ensure uninterrupted primary-to-secondary throttle response, regardless of the throttle opening rate. In common with its predecessor, the 750 accommodates square- or spread-bore intake manifolds with an adaptor plate supplied in the drop kit. It also benefits from the 625’s unique fuel bowl that is integrated with the main body. Available in either aluminum construction or in an exclusive automotive-spec composite, the composite bowl demonstrates its drivability credentials particularly in hot stop-start conditions. Because it reduces heat transfer by as much as 20 degrees Fahrenheit, it contributes to faster hot restarts. To virtually guarantee a leak-proof bowl Demon created it without any plugged passages. Reassuringly, the bowl gasket is placed above the fuel level. Perhaps the...
How to cure carburetor calibration swings with a fuel pressure regulator

How to cure carburetor calibration swings with a fuel pressure regulator

Written by Moore Good Ink It’s not generally known that carburetor calibration is often dependent on the fuel pressure that enters the fuel bowl. The higher the fuel pressure, the higher the fuel level in the carburetor bowl, and vice versa the lower the pressure, the lower the fuel level. Fluctuations in fuel pressure affect the air-fuel ratios that the carburetor meters. Though the aim is to minimize the pressure drop, maintaining constant, precise fuel level is not strictly possible. As the demand increases the level drops as does the fuel pressure. So there is a balancing act to maintaining good calibration and the chief challenge is how to minimize the pressure drop across the pump’s dynamic flow range.   What Demon found when it upgraded its regulators Initially, the work was necessary because of extra pumping performance they extracted from their fuel pumps: the 400, the 280, the 220 Hot Road, and the 220PS. Moreover, the pumps’ materials were altered to accept a greater variety of fuels, which included gasoline, racing fuels, methanol, ethanol, diesel, and so on. As a consequence the original materials used in the regulators and filters had to be altered accordingly.   But now we get to the really good bit To address the pumps’ increased flow rates Demon purchased the “Best-in-Class” regulators available on the market. They then used those targets as benchmarks for their regulators, which are formerly the BG 2- and 4-port designs as well as the original BG diaphragm-bypass breed. The first priority was to increase the diaphragm’s effective area in all of the regulators to make them more sensitive...

Radical delivers 22 race cars to Las Vegas

Written by Moore Good Ink Peterborough, UK: During the last few weeks of 2012, leading race car maker Radical Sports Cars delivered 22 sports racers to Spring Mountain Motorsports Ranch, Pahrump, Las Vegas. Spring Mountain’s Driving School purchased 11 for its own use thereby increasing their fleet of Radicals from 9 to 20. The remaining 11 were sold to customers. Spring Mountain will use the sports racers to launch a traveling school with plans to visit other motor sports country clubs during 2013, including Autobahn, Chicago; Monticello NY; New Jersey Motorsports Park as well as Mosport Motorsports Park in Canada. Source Radical Sports Cars www.RadicalSportscars.com  ...

Radical steals headlines at Autosport show

Written by Moore Good Ink Birmingham, UK: Radical Sportcars revealed their new RXC coupé at the Autosport International Show Jan 10-13 held at the National Exhibition Centre (NEC). Inspired by the Peugeot 908 Le Mans prototype, yet with a profile that is sleek and flowing and unmistakably Radical, this road-derived race car is the Peterborough firm’s first coupé. Using the Duratec 37 engine, Ford’s 3.7liter V6 380hp Ti-VCT (variable cam timing), mated to a 7-speed Quaife sequential gearbox, the Radical weighs 1985lbs and at its claimed 175mph top speed generates a further 2000lbs of downforce. Company co-founder Phil Abbott commented, “The response to the RXC’s appearance at this year’s Autosport International was the best I’ve experienced in the 16 years of Radical launches. We encountered the biggest crowds for the car’s unveiling and observed the most positive feedback I can remember.” Roger Green, Radical’s marketing manager, said “Interest was expressed from a wide range of racing participants, including those from Grand Am and GT teams.” Soon the car will complete its European Type Approval process, making it eligible for entry in international GT championships. In the meantime winter testing and development of the new RXC will commence at Spring Mountain Motorsport Park, Pahrump, Nevada. Source Radical Sports Cars...

Brittany Force secures seat in Castrol EDGE Top Fuel dragster

Written by Moore Good Ink Yorba Linda, California: At an announcement ceremony on Thursday, January 10, 2013, John Force speaking from his headquarters released news that Brittany, the second youngest of his four daughters, will be competing in a Castrol-sponsored Top Fuel dragster for the full 2013 NHRA Mello Yello Series. The Castrol EDGE dragster will be tuned by Crew Chief Dean “Guido” Antonelli. The long-serving Team Force member most recently acted as Crew Chief for John Force and for Force’s daughter Ashley. Eric Lane will be second in command to Antonelli. He held a similar position with the Auto Club Ford Mustang Funny Car driven by Robert Hight, for whom Jimmy Prock served as crew chief. The other major announcement made by Force concerned Mike Neff, who for the past two years was driver and crew chief of the Team Force Castrol GTX Ford Mustang Funny Car. Neff made the decision, with Team Force’s full support, to relinquish the race car cockpit for the role he prefers: that of Crew Chief. He will reunite with John Force, in an attempt to capture the 16th World Championship for the Team Force owner. Castrol, the British lubricant maker, with whom Force has maintained a 29-year-old relationship, will be the major sponsor displayed on Brittany’s Top Fueler.  ...
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