Porting these heads and increasing airflow and valve sizes does the trick For decades, Harley Davidson (HD) owners have sought increased power and performance for their machines. We have found over the years that porting the cylinder head and increasing the valve sizes and airflow not only adds horsepower but also increases torque and driveability.
All the original equipment manufacturers (OEMs) have fastener labs with lots of sophisticated equipment and well-educated people working on fastening issues. They even have their own professional association The Bolting Technology Council which holds meetings and seminars about fasteners. I’m not a fastener engineer, and I’m not going to make you into one.
Ever notice how negativity becomes a self-fulfilling prophecy? People focus on how tough things are, and sure enough, things usually get a lot tougher. On the other hand, ever notice how those shop owners who are looking toward the future of their businesses always are better able to jump over the present day hurdles that
During more than 30 years of crankshaft grinding, I have been asked many times to repair a surface that needle bearings ride on. For years, the only advice I could offer to customers was to go buy a new part. The problem was that a needle bearing needs a super-hard surface to ride on or
All the original equipment manufacturers (OEMs) have fastener labs with lots of sophisticated equipment and well-educated people working on fastening issues. They even have their own professional association – The Bolting Technology Council – which holds meetings and seminars about fasteners. I’m not a fastener engineer, and I’m not going to make you into one.
Brad Hartmann is president of Hartmann Bros. Inc., a heavy duty rebuilding operation located in Abilene, TX. He is the incoming chairman of AERA’s Vanguard committee, the group providing leadership opportunities to AERA members under the age of 40. Hartmann, 31, has been with the company since high school in the 1980s, beginning full-time employment
As an automotive machine shop owner, you’re reading Automotive Rebuilder magazine because you want to stay abreast of all the happenings in your industry. Along with that, you’re also searching for ways to improve your bottom line by adding additional products or services to your operation. High performance machining could be the ticket. The explosive
New concept enables more accurate engine operation, higher efficiency vehicles Saab Automobile AB recently unveiled its Saab Variable Compression (SVC) engine, a new engine concept that enables fuel consumption to be radically cut while increasing engine performance per liter of engine displacement. The combination of reduced engine displacement, high supercharging pressure and a unique system
Every engine requires a certain amount of oil flow to keep the bearings, camshaft, valvetrain and other moving parts lubricated. Oil forms a barrier that prevents metal-to-metal contact and reduces friction and wear within the engine. In the bearings, it forms a wedge that actually lifts and supports the crankshaft and camshaft as they rotate.