KTS Billet Compressor Wheel for Garett GT 15-25, BMW
Performance
Our MFS impellers with Performance Design are ‘slim, curvy and sexy’ and come with the most options: forward, reverse, threaded bore, boreless, 4+4, 5+5, 6+6, 7+7, 8+8, 9+9, 10+10, 7+0, 8+0, 9+0, 10+0, 11+0, 12+0, tapered tips, cutback, blade heights, trailing angles, flank mill, point mill, racing applications, 400mm, etc. They are highly customisable and minimal order quantity (MOQ) for Performance Design starts from 1 piece. The soul of performance is now unleashed.
Schematic
Performance vs Durability
We can produce billets as extreme, as crazy as you want for the highest performance. But let’s face it, this is engineering and there is a compromise.
Do you really want a crazy wheel that runs a higher risk of bursting 200meter down the race track?
Do you prefer to have a wheel that is less crazy but will finish the race?
This is the experience of KTS knowing when to stop the craziness. After making more than 3000pn and with more than 500,000pcs wheel in service, we have a better idea of the boundary. This is where our value is... to advice you the fine line.
Specifications
| KTS MFS P/N | Equivalent P/N | Status | OE Model | replaces OE CW P/N | Alternate C/W P/N | Group/MHI Short Spec | IHI Short Spec | Applied to engine/vehicle | Suitable for Turbo/Chra or Upgrade for | Notes | OE Blades | KTS P/N | BCCW | Tapered Tip Angle N |
BCCW Blades | BCCW Leadtime | Date of Release | Changelog | BCCW Warranty | BCCW Exchange | Nose Diameter A |
KTS Inducer B |
KTS Base exducer C |
KTS Tapered TIp Exducer D |
KTS Tip Height E |
OE Exducer | Superback F |
Overall height G |
Bore Size H |
Racing or Non-racing | Std size or customs | Trailing Angle I |
Bore Type | Fits OE Compressor Housing | Cutback J |
SP Height Angle K |
Rotation | BCCW Blade Height L |
Splitter Height M |
| 2588 | 2552 | Active | GT15-25 | 784369-0002 | 60 | BMW M57 TU2 EU4 | 758351-0005 | Performance Design | 6+6 | 2588 | BCCW | 30° | 11+0 | PRDTN | 140301 | 4 Year | 4 Year | 11,50 | 44,39 | 60,01 | 64,20 | 4,63 | 3,79 | 32,40 | 5,08 | R | STD | 60 | Through | OE | 0,0 | 0,00 | Forward | 25,72 | 0,00 | ||||
| 2589 | 2591 | Active | GT15-25 | 770240-0001U | 60 | BMW N57D OL | 777853-0011? | Source not from OE sample | 10+0 | 2589 | BCCW | 30° | 10+0 | PRDTN | 140301 | 4 Year | No | 11,94 | 44,20 | 60,40 | 64,48 | 4,53 | 3,71 | 32,40 | 5,08 | R | CTM | 45 | Through | Custom | 0,0 | 0,00 | Forward | 26,69 | 0,00 | ||||
| 2590 | Active | GT15-25 | 782847-01B | 60 | BMW S63B44 X6M | 790463-0002? | Preformance Design | 9+0 | 2590 | BCCW | 30° | 9+0 | PRDTN | 140301 | 4 Year | 4 Year | 12,00 | 44,50 | 60,40 | 64,53 | 4,57 | 3,71 | 32,40 | 5,08 | R | STD | 45 | Through | OE | 0,0 | 0,00 | Reverse | 27,29 | 0,00 | |||||
| 2591 | 2591 | Active | GT15-25 | 770240-0001U | 60 | BMW N57D OL | 777853-0011 | Preformance Design | 10+0 | 2591 | BCCW | 30° | 10+0 | PRDTN | 150129 | 4 Year | 4 Year | 11,92 | 44,50 | 60,40 | 64,48 | 4,53 | 3,71 | 32,40 | 5,08 | R | STD | 60 | Through | OE | 0,0 | 0,00 | Forward | 26,99 | 0,00 | ||||
| 25J8 | 2552 | Active | GT15-25 | 784369-0002 | 60 | BMW M57 TU2 EU4 | 758351-0005 | Performance Design | 6+6 | 25J8 | BCCW | 30° | 6+6 | PRDTN | 170428 | 4 Year | 4 Year | 11,50 | 44,39 | 60,01 | 64,20 | 4,63 | 3,79 | 32,40 | 5,08 | R | STD | 60 | Through | OE | 0,0 | 0,00 | Forward | 26,02 | 0,00 | ||||
| 25K1 | 2552 | Active | GT15-25 | 784369-0002 | 60 | BMW M57 TU2 EU4 | 758351-0005 | Point Milling ,Performance Design | 6+6 | 25K1 | BCCW | 30° | 11+0 | PRDTN | 170505 | No | No | 11,50 | 44,39 | 60,01 | 64,20 | 4,63 | 3,79 | 32,41 | 5,08 | R | STD | 45 | Through | OE | 6,0 | 0,00 | Forward | 22,50 | 0,00 |
Development
KTS has vast experience with turbocharger design and the understanding of the functionality of the parts. Our development team makes measurements and calculations, analyses aerodynamics and natural frequencies, produces geometric and stacked-up tolerances, and specifies finishing to ensure KTS MFS impellers perform exactly to the design intention.
We count on a huge library of impeller to select, match and fine-tune to the requirement of our customers, satisfying your wishes and dreams.
Software
Cutting-edge CAD/CAM software offers KTS engineers shorter design times, newer capabilities, advanced simulations and integrated machining operations, allowing design changes to be cascaded to manufacturing at the click of a button.
We are able to simulate the MFS 3D model, and their manufacturing strategy, even before we see the real MFS.
Material
KTS selects aluminum A2618 series high strength, low-weight aerospace grade material, made by Alcoa. We are confident of the mechanical properties of this grade and our MFS come with a 4-year limited warranty.
These alloys are mechanically processed, breakings down oxide defects (mainly silicon) that might be present and refines the grain structure of the alloy to improve the fatigue properties of the material, and improving MFS durability - meaning they are stronger than the traditional cast impellers.
KTS can also offer Titanium on selected part number. Other terms applies.
Aluminum Company of America (Alcoa)
Alcoa Inc. (Aluminum Company of America) is global leader in lightweight metals technology, engineering and manufacturing, innovates multi-material solutions that advance our world. It is one of the world’s largest lightweight metal manufacturers of products made of aluminum, titanium and nickel. Alcoa’s products are used worldwide in aircraft, automobiles, commercial transportation, packaging, building and construction, oil and gas, defense, and industrial applications. Alcoa’s products include fastening systems for the Airbus A380 jet, sheets for Ford’s F-150 truck, and the first aluminum fan blade for Pratt & Whitney jet engines.
Alcoa also supplies aerospace-grade aluminum produced in South Korea to Samsung Electronics for its Galaxy S6 and Galaxy S7 model line-up. Alcoa is a major producer of primary aluminum, fabricated aluminum, and alumina combined, through its participation in all major aspects of the industry: technology, mining, refining, smelting, fabricating, and recycling. Charles Martin Hall (6 Dec 1863 - 27 Dec, 1914) was an American inventor, businessman, and chemist. He is best known for his invention in 1886 of an inexpensive method for producing aluminum and he was one of the founders of ALCOA.
Balancing
Since 3Q2014, KTS is using 2-plane balancing audit. We will conduct weights correction at the backdisc and nose. However, in many occasions, no correction is carried out at the nose, due to lack of material at the nose as the KTS performance wheels have high blades and slim nose. Our balancing protocol accepts a limited amount of residual imbalance on the nose. This can be easily corrected during the subsequent process of rotor balancing and or VSR. A colour paint dot on the nose indicate that balancing protocol is established, even if there are no correction. We highly recommend to VSR especially for small wheels 60mm exducer and below.
Machining
KTS insists on top Japanese machine tools to deliver best performance, productivity and consistent tolerance, most critical to the demands of the MFS manufacturing. A fleet of Okuma LB3000 multi-tasking lathes machines is deployed for exceptional turning to tackle the greatest challenges posed by tight MFS tolerance on diameters, parallelism, perpendicularity, roundness, cylindricity and total runout. Such knowledge are privileged KTS know how. MFS impellers are machined using high-speed 5-axis CNC operations, which is needed to achieve intricate aerodynamic impeller blade profile and finish required for optimal aerodynamic and mechanical performance.
Measurements
At KMC where all MFS impellers are produced, the best of measurement metrology technologies are deployed to inspect the tight geometric dimensioning and tolerance required in a KTS MFS impeller, complementing the demanding engineering specification of a modern day turbocharger.
