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Race Supercharger System Owner's Manual

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Race Supercharger System Owner's Manual RACE SUPERCHARGER SYSTEM ® OWNER’S MANUAL ENGINEERING, INC. The following information and recommendations are designed to promote a long, trouble-free service life for your supercharger. Each Vortech supercharger system is built to precise tolerances using the finest materials available. SECTION 1 screen/filter inside of the oil feed fitting. This oil inlet ENGINE STARTUP AND FUEL CONSIDERATIONS fitting is designed with a very small orifice, which 1. Never operate your engine at full throttle when the provides a mist of oil directly onto the gears. Never engine is cold. When starting the engine each day, use Teflon tape or other sealants on any oil feed line always allow time for the oil to reach full operating fittings. Do not overtighten fittings. temperature before running above 2,500 RPM. Full 2. Use manufacturer's/engine builder's engine oil and supercharger operating temperature is generally oil filter recommendations. Do not use engine oil achieved only after the engine water temperature has additives as they may contain solid particulates such been at the normal indicated operating range for two as moly or Teflon which can clog the supercharger or three minutes. feed line. 2. Always use the highest octane fuel available. 3. Spark Plug/Ignition System Guidelines - Vortech re- 3. Always listen for audible detonation. commends the use of spark plugs that are at least one to two heat ranges cooler than what is stock SECTION 2 utilizing a plug gap of .030" - .040". The use of GENERAL SUPERCHARGER SUPPORT premium high performance "spiral core" ignition wires are required for optimum performance as well as SYSTEM RECOMMENDATIONS dielectric grease on the inside of the wire boots. 1. Air Filters - Always use an air filter on the supercharger Ignition amplifiers such as Crane HI-6/7 or MSD inlet to prevent the supercharger from ingesting foreign objects. 6/7AL are also required for boost levels over 10 psi. 2. Air Intake/Air Discharge - Must be in good condition SECTION 4 and properly secured. If equipped with a flex hose, this must be free of damage/leaks. RECOMMENDED TUNING AIDS 3. Belt Tension - Excessive belt tension can lead to super- (AVAILABLE DIRECT FROM VORTECH) charger or crankshaft bearing failure. Do not use a 1. Fuel Pressure Gauge non-slipping or cog-type belt on a supercharger de- 2. Boost Gauge signed to be driven with a serpentine drive belt (non 3. Ignition Amplifier/Boost Retard heavy duty). Replacement belts for your application are available from Vortech. SECTION 5 4. Crankcase Ventilation System - You must use the free SUPERCHARGER CARE GENERAL flowing, baffled system provided to prevent excessive RECOMMENDATIONS crankcase pressures and possible engine damage. 1. Check and select your impeller speed per guidelines 5. Pulleys - If the supercharger drive belt comes off dur- outlined in Section 7 of this manual. ing operation, it is most likely due to misalignment of 2. Select the correct compressor performance for the job. the supercharger pulleys caused by installation pro- Vortech offers compressor matching services to help blems or movement of the mounting plate. Misalign- you select the proper supercharger for your application. ment can also be caused by overtightening (and fai- Contact the Vortech Sales Department for details. ling) of the belt, which can negatively affect the 3. Use the proper compressor bypass valve on all high supercharger and crankshaft bearings. rpm or racing systems. SECTION 3 SECTION 6 NORMAL MAINTENANCE RECOMMENDATIONS CUSTOM SUPERCHARGER MOUNTING 1. Clean the supercharger oil inlet fitting at every oil INFORMATION change. When the vehicle is cold, remove the oil 1. The supercharger must be mounted within 50° of inlet fitting at the supercharger and clean it thoroughly vertical. That is 50° to the left or right with the lowest utilizing high pressure air to blow the orifice clean of the three oil return provisions selected for the before reinstallation. Do not attempt to remove the drain. This is to provide proper return oil drainback Please contact: Vortech Engineering, Inc. • 1650 Pacific Ave., Channel Islands, CA 93033-9901 Questions? Phone: (805) 247-0226 • Fax: (805) 247-0669 • Website: vortechsuperchargers.com • Hours: M-F 8AM - 4:30PM (PST) © 2000 Vortech Engineering, Inc. All Rights Reserved. International Copyrights Secured. 25FEB00 V 2.0 DRAFT P/N: 008515 and help control oil drainage. Additionally, the input faster. Never spin a supercharger beyond its absolute shaft must be parallel to the crankshaft. The compres- maximum impeller speed. Supercharger reliability sor housing may be loosened and rotated virtually and adiabatic efficiency should be your highest priorities 360° for optimum outlet alignment. when selecting a supercharger. Vortech Engineering, 2. The supercharger mounting holes are 3/8-16 x 7/8" Inc. superchargers excel in both of these categories, deep. The tensioner plate holes are metric: M12-1.75 if correctly sized and ratioed for your particular appli- x 3/4" deep. It is imperative that the tensioner plate cation. Contact us directly, if you need assistance in pivot bolt in the center of the gearcase cover not be sizing a supercharger for your application. We offer allowed to bottom out. custom matching services at no charge. 3. Mounting brackets should be rigid, utilizing five of the six supercharger mounting holes. Construction should 2. IMPELLER SPEED not allow the bracket to resonate in a critical range Maximum impeller speeds are not the same for all (this may depend on engine configuration), nor should units. No unit will run at its maximum speed contin- the bracket offer any significant flex. Mounting plates uously without optimum conditions and additional should be at least .250" in thickness. For racing appli- coolers, filters, etc. Refer to the SUPERCHARGER cations, we recommend a minimum thickness of .312". SPECIFICATIONS & PERFORMANCE APPLICA- 4. An oil feed and drain must be provided. Filtered oil TION GUIDE section in this manual to find the from the engine must not be contaminated by Teflon maximum speed for your unit. tape or other sealant that might plug the oil feed fitting in the supercharger. Vortech offers a supercharger 3. CALCULATING SUPERCHARGER oil filter kit for most installations. IMPELLER SPEED: 5. Return oil to the oil pan using 1/2" I.D. hose (or larger) or -8 AN fitting (or larger) routed gradually downward Crank pulley diameter* x 3.45** x engine rpm @ shift with no dips, allowing the oil to enter the oil pan above = Impeller Supercharger pulley diameter* speed the oil level. This is a gravity drain system. On appli- cations such as endurance and/or road racing engines Example of Serpentine Pulley: or for high speed sustained supercharger operation 7.0” x 3.45 x 6,000 applications such as a freestanding engine, the use = 43,514 Impeller speed of two supercharger oil drains are required to evacuate 3.33” the engine oil from the supercharger. An alternate Example of Cog Pulley: method would be to use one drain hose off the super- 73 cog pulley teeth x 3.45 x 7,500 charger and a vent hose attached to one of the other = 55,555 Impeller speed 34 cog pulley teeth drain fittings off the bottom of the supercharger. Drain restrictions, kinks or returning the oil below the oil level * When measuring pulley diameters, measure at the top of in the pan may cause a severe windage problem that the ribs where the serpentine belt rides. For cog pulleys consumes significant power and generates heat. Super- substitute the number of teeth for the diameter. charger seal failures may also result. ** 3.45 denotes the internal step-up ratio inside of the super- 6. The oil feed fitting must remain in the original position charger. on the supercharger gearcase as when it was shipped Substitute 3.60 for all V-2 superchargers. from Vortech. The oil entering the supercharger SPECIAL NOTE: Premature supercharger failure can gearcase must flow in the same direction that the occur if the maximum impeller speed is exceed-ed. It gears are rotating. has been observed and noted that some indi-viduals overspin their Vortech supercharger to make more boost SECTION 7 during motorsport competitions. This action is not SUPERCHARGER UNIT OPERATING recommended and should be avoided. PARAMETERS AND CONSIDERATIONS 4. AFTERCOOLING 1. SUPERCHARGER PRESSURE LEVELS It is important to realize that the higher the boost Engines will respond differently to a supercharger. pressure, the hotter the air discharge temperature Smaller displacement engines with less of a CFM will be (simple physics). To overcome this pheno- demand will result in more pressure than a larger menon, Vortech has developed several air-to-water displacement engine, when the same two superchar- aftercooler systems that add significant overall engine gers are driven at the same impeller speed. The higher horsepower by effectively cooling the discharge air. pressure level in the smaller displacement engine is Due to their careful design, Vortech’s aftercoolers a direct result of more restriction. Engines with "large experience minimal pressure loss through the core port area" heads and high lift/overlap camshafts may and duct assemblies. This minimal pressure loss is also exhibit lower boost levels. To make up for the not attainable using conventional "intercoolers" that pressure loss, the supercharger will need to be spun are improperly sized to an application. This means 2 Please contact: Vortech Engineering, Inc. • 1650 Pacific Ave., Channel Islands, CA 93033-9901 Questions? Phone: (805) 247-0226 • Fax: (805) 247-0669 • Website:vortechsuperchargers.com • Hours: M-F 8AM - 4:30PM (PST) © 2000 Vortech Engineering, Inc. All Rights Reserved. International Copyrights Secured. 25FEB00 V 2.0 DRAFT P/N: 008515 more overall horsepower and slower supercharger 6. BYPASS VALVES - If the supercharger installation speeds to attain a significant horsepower increase.
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