February 8, 2012
Harley Parts Accessories
Heavy Breathing
Motorcycle air filters come in three basic types: cellulose (paper), cotton (oiled), and synthetic/fiberglass. Each has its advantages, but only high-performance filters (oiled cotton and synthetic/fiberglass) provide the high airflow rates your high-performance engine demands. To maximize power output, the filter needs an almost unrestricted flow of air into the motor.
Cotton filters have larger spaces between the fibers than paper filters do, allowing excellent airflow. The downside is that they only operate at peak filtering efficiency (95 percent or more) when freshly oiled. To compete, the filtering efficiency of a cotton filter without oil is only around 65 percent.
Then compare this to a Screamin’ Eagle high-tech fiberglass filter. While both types do a good job of maximizing airflow, the fiberglass option requires much less maintenance while providing an efficiency rating of more than 95 percent. This is comparable to a freshly oiled cotton filter but without having to keep the filter oiled.
The advantage of high-performance filters, such as the Screamin’ Eagle high-tech fiberglass air filters. If you’re an everyday rider, your original equipment paper air filter – when keep clean – does a fine job of helping your engine run its best. But if your motorcycle features any street-legal engine upgrades, a Screamin’ Eagle high-tech fiberglass air filter will give you the best combination of performance and convenience.
HOG Magazine #13-2011
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January 14, 2012
Parts Accessories Monthly Showcase
SCREAMIN’ EAGLEHYDRAULIC CAM CHAIN TENSIONER AND HIGH-FLOW OIL PUMP UPGRADE KIT
Spring-loaded cam chain tensioners on older engines require service, so customers with older Harley-Davidson® motorcycles will appreciate this upgrade. The Screamin’ Eagle® Cam Chain Tensioner and High-Flow Oil Pump Upgrade Kit features a hydraulic tensioner, which is designed for the life of the engine. This upgrade kit will reduce and/or eliminate wear and provide a higher level of confidence to the customer that this wear will not be an issue going forward. This kit upgrades their spring-loaded tensioners with the current, late model hydraulic tensioners and improves the oil flow within their engine.
BASIC DETAILS YOU NEED TO KNOW
The Screamin’ Eagle® Cam Chain Tensioner and High-Flow Oil Pump Upgrade Kit updates the cam chain tensioner of Twin Cam 88 engines to the latest design, as featured on the Twin Cam 96™ engine. The kit includes an improved Screamin’ Eagle® High-Flow Oil Pump that provides increased oil pressure and oil flow. In addition, ’02-’06 models utilize a Twin Cam 96™ single row front roller chain and sprocket (included in kit). ’99-’01 models use Original Equipment front silent chain and sprocket to retain the cam position sensor function. This popular upgrade for older models has been designed and tested to Harley-Davidson factory specifications.
How Does It Work?
The larger pump roters increase the oil supply by 23% and scavenging by 50% when compared to the ‘99-’05 OE oil pump. The increased oil flow reduces operating temperature of bearings to improve bearing life
The cam plate is CNC-machined billet aluminum and is heat-treated to 6061-T6 specifications to enhance its ability to support high valve spring pressures on cam lobes . Installation requires specialized tools; dealer installation is recommended
Fitment: Fits ’99-’05 Dyna® models, ’00-’06 Softail® models and ’99-’06 Touring models. Installation requires separate purchase of Spacer Kit, P/N 25285-08; Cam Service Kit, P/N 17045-99D; and Drive Gear Retention Kit, P/N 25533-99A.
Opportunity: It is important to realize that the OE tensioners are a wear item for Twin Cams built between ’99-’06. Our Hydraulic Cam Chain Tensioners will significantly outlast the OE spring-loaded tensioners on these older model Big Twins and are an ideal addition to an engine modified for improved performance. Performing this upgrade will reduce or eliminate future service intervals of the cam chain tensioner. This is also a perfect opportunity to install the Screamin’ Eagle® High-Performance Inner Cam Bearing Kit, P/N 24017-10, which provides an increased load capacity and extends the engine life.
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