Development of the best turbocharger technology for racing

Magnum's emphasis on providing the highest quality products at unbeatable prices starts with our raw materials. From Magnum`s A2618 ultra lightweight aerospace grade aluminum billet wheels to our super alloy INCONEL 713C heat treated standard turbine shafts; it is no mystery why Magnum turbochargers are virtually fail proof. If that`s not enough order a custom Titanium Aluminide (Ti-Al) turbine wheel for your high performance applications and notice the Magnum Difference. Our Silicon-Nitride ball bearings and High Silicon-Molybdenum content housings are another great example of our dedication to perfection in the raw material selection process. However our ability to carry the industry`s best warranty doesn't just depend on proper material selection. Magnum`s Geometric design and exhaustive R&D driven engineering advances tell the rest of our story. At Magnum, we believe that great materials are only as good as the skilled technicians and engineers that mold them into a finished product. Our custom point milled billet compressor wheels and VSR balanced CHRAs come second to none. Thanks to Magnum's highly efficient twin scroll turbine housing geometry and anti-surged (Ported Shroud) compressor housing designs; lag has become a term of the past. Magnum Performance Turbos' revolutionary engine simulation software is one of a kind. Our unique ability to produce technical data that can be directly programmed into the vehicle's E.M.S. and anti-lag systems allows us to provide professional racing and tuning precision for the daily driver at a low cost. With today's advancements in turbocharger technology a properly trained tuner or technician with the technical support of a Magnum Turbo specialist can paint the exact power-band desired down to virtually a fraction of an RPM for their client.

Magnum Performance Turbos strives to lead the industry in billet wheel technology. There are 3 basic advantages to Magnum Billet Wheels over standard C355 cast aluminum alloy compressor wheels. Considering that historically, the primary cause of turbocharger failure is Low Cycle Fatigue (LCF) failure in the compressor wheel. The real question is how do we manufacture a compressor wheel that is virtually exempt from the LCF phenomenon? Well, The "High-End" way is through using forged billet wheels that are manufactured from solid A2618 (aerospace grade) aluminum. This material alone provides ultra-low inertia, high tensile strength and ductility as is evident in the material's high strength to density (i.e; B/L) ratios. The "difficult" way is through lowering the circumferential speed of the compressor impeller by changing the aerodynamic design of the impeller or by controlling or reducing the charging pressure. Here at Magnum we are no stranger to choosing the road less traveled, hence we've employed both. The aerodynamic properties of our compressor wheels are second to none in our industry. But we don't stop there, our engine simulation software is the key to our unit's longevity. We run engine simulations custom to your application in order to maximize the lifespan of our units while providing the desired performance and power band for our customers. In layman's terms, you'll have a turbocharger that lasts virtually twice as long as that of one manufactured with a C355 cast aluminum compressor wheel with Magnum's Aerodynamic designs, free custom engine simulation and superior billet wheel materials.

As aforementioned, the aerodynamic properties of the billet wheel design has the second greatest impact on (LCF) resistance and service life. This is why the geometric design of a Point Milled Magnum Billet Wheel pushes the boundaries of performance with the industry leading 40.5 degree extended tip design. What does point milling mean to you? how does it differ from flank milling? Simple, unlike a flank milled wheel, a point milled wheel allows the designer to carry 3rd order (highly aerodynamic) geometries from the CAM/CAD software model to the CNC machine and make them a reality. This provides increased flow and reduces exducer tip speed allowing the turbo to spool faster and prevent long term low Cycle Fatigue Failure. But that's not it, by decreasing the trim and back plate rotating mass without reducing the inducer diameter it increases spool-up characteristics specially at low shaft speeds and reduces rotating mass inertia. Thereby reducing shaft stresses and increasing CHRA longevity.

A flank milled wheel, although a much better choice than cast wheels; provides very similar results as point milled wheels for nearly half the price. Our flank milled wheels exhibit the second highest degree extended tip in the industry 37.5 degree. Second only to our point milled designs of 40.5 degrees. These designs bring race proven results of the highest caliber and are available for our whole product line; making Magnum the obvious solution to your boosting needs. All this talk about extended tips beg the question...So what does an extended tip design do for you? Simple, increases flow by 15% which translates to an additional 15% crank horsepower while reducing lag.

Magnum Performance Turbos utilize the industry's latest technological advances in Journal bearing design. Our units feature low inertia dual hydrodynamic journal bearing technology. Manufactured out of high strength Copper-Tin alloy, these "white metals" provide the highest scuffing and fatigue strength available while offering the lowest friction coefficient in comparable alloy groups. Generally, this bearing technology offers two primary advantages for the high performance market. The first being a low price-point that best suits the needs of amateur racers and racing enthusiast alike. Focused on wide open throttle response and serviceability this is easily the best option for the weekend hobbyist and street performance applications.

Also, when taking into account that once target boost is achieved, ball bearings of any kind offer little to no advantage in performance at full throttle. This is the clear choice for seasoned drag racers not relying on the transient efficiency that a track car would need for example when trying to get out of a corner rapidly . Another often overlooked advantage of the journal bearing CHRA unit is it's serviceability. Unlike a Ceramic Ball Bearing CHRA which in most cases is not serviceable due to its irreparable failure modes, journals are. As a result this technology focuses on meeting the performance needs of most racers while offering a low price-point and relatively inexpensive repair or replacement cost in wearing parts. It's no wonder these units carry the best warranty in our lineup and industry as a whole.

When quality becomes the top priority along with transient response and low pulsating flow efficiency Magnum Performance Turbos responds with the latest advancement in technology. Our German Manufactured ABEC9 accredited dual ball bearing CHRAs are second to none hence we are proud to stand behind them with yet again the best warranty in our industry. These units not only feature Silicon-Nitride low inertia and high strength ball bearings. We substantiate it with the scientific facts of a a shaft throttle response curve that clearly shows a 15% gain across the board.

Magnum's ball bearing units have been tested exhaustively under the worse conditions possible including complete oil scavenging and proven to cause little to no damage to the CHRA as a whole. It's no wonder their durability is unmatched by any other available technology. This technology is for the professional that plans to run a unit during long periods of time under high thermal and fatigue stresses. Prime examples being the professional Drift, Baja and endurance track racers. All of these units have been race proven by our sponsored Magnum Race Teams worldwide.

Magnum Performance Turbos has one of the most efficient anti surged compressor housings in the industry. This re-flow or re-circulation allows the compressed air to recirculate during surging while the driver is shifting or releases the gas pedal suddenly. Without this safety mechanism the thrust load on the compressor wheel and torque/shear stresses perceived by the turbine shaft could cause catastrophic failure. Low cycle fatigue long term or even ductile failure in the case of billet aluminum compressor wheels or brittle failure for cast wheels is common as a result. An anti-surged housing doesn't only act as a safety mechanism. Industry white-papers have shown that this geometric phenomenon improves the low end transient response of a turbocharger as a whole. This allows the compressor to operate at high flow capacity during lower engine RPM and provide a much wider power band for internal combustion engines.

This technology is a step up from the entry level Journal Bearing Technology when quality, durability and performance are desired yet remaining price conscious is crucial. When it comes to Ceramic Ball Bearing Technology, they are not all created equal. This is Why Magnum Performance Turbos uses the highest quality Silicon-Nitride balls available in the industry inside its Angular contact Hybrid Ball Bearing systems.

This German Manufactured ABEC 9 accredited low friction and ultra low inertia bearing reduces parasitic vibrations and lowers friction heat as well as lag in the CHRA. With high load anti thrust qualities it reduces thrust induced friction and stabilizes the thrust bearing increasing spool-up characteristics by 8-10% when compared to most hydrodynamic journal bearing CHRA. Ball bearings in general require significantly lesser oil supply and have been know to operate undamaged during long periods of oil scavenging. Hence whether "hybrid" or "cartridge style" the longevity of ball bearing units is unmatched by even the most hydro-dynamic and advanced journal/thrust bearing units .

This feature also allows the unit to maintain the CHRA temperature below the cooking threshold virtually at all times. Magnum's ball bearing CHRA units come water and oil cooled which allows it to operate in a relative metal temperature range more than 60% lower than a non water cooled CHRA.

Normally a non water cooled CHRA spends more than 30 minutes in the "above coking threshold" during engine shutdown causing heat sink to set in and significantly reducing the CHRA life overall. These water and oil cooled CHRAs come plugged and it is necessary to install the water feature. Warranty will be voided if water lines are not installed on water cooled housings for obvious reasons.

All Magnum Performance Turbochargers come standard with high rupture strength and Heat resistant turbine Wheels. Turbine shafts are manufactured out of aerospace grade lightweight Nickel-Chromium alloy and are put through the INCONEL 713C treatment. Rated to over 2000 degrees Fahrenheit to withstand the most trying conditions possible. Custom units are also available in ultra low inertia Titanium Aluminide (Ti-Al) shafts. This material is one of the most difficult to cast in the industry, hence reserved for only the most experienced of turbocharger manufacturers.

The turbine and CHRA housings are cast of High Silicon-Molybdenum content Ductile Iron to provide the best endurance and durability and to prevent brittle failures due to cyclical fatigue and extremely high heat stresses. Custom thermal coated housings (rated to over 2200 Fahrenheit) are also available at an additional cost and through special order. Check with your sales agent for information regarding lead time etc.

Our proprietary engine simulation software was written and developed by Magnum Performance's U.S. (Florida) licensed professional engineers and is the result of over 2 years of brilliant work by our team. Over 600 pages of proprietary algorithms and formulas allow for such accurate results. This comes free with the purchase of your Magnum Performance Turbocharger from an authorized dealer.