Comparison Specs: CorkSport's Mazdaspeed Turbo Upgrade vs. OEM K04 |
| | | |
Component | Feature | CorkSport Performance Design & Advantages | OEM K04 Turbocharger |
CHRA | Bearing System | Heavy Duty Journal Bearing With 60 Degree Thrust Collar | Standard Journal Bearing With 270 Degree Thrust Collar |
| Lubrication & Cooling System | Oil & Coolant | Oil & Coolant |
| Serviceability | 100% Rebuildable Without Replacing the Center Section Housing | Not Worth Rebuilding |
| Balancing Procedure | Compressor Wheel Balanced | Unknown |
| | Turbine Wheel Balanced | Unknown |
| | Assembled CHRA Balanced | Unknown |
Compressor | Wheel Material | Fully-Machined Forged Billet T6 Aluminum Alloy | Cast Aluminum Alloy |
| Wheel Design | 50.5mm Inducer 55 Trim 6x6 Blade Design With Extended Tip Technology | 45mm Inducer 64 Trim 6x6 Blade |
| Housing Material | Cast T6 Aluminum Alloy | Cast T6 Aluminum Alloy |
| Housing Design | 0.53 A/R With OEM Size Inlet & Outlet | Unknown A/R With OEM Size Inlet & Outlet |
| Maximum Flowrate | 660 CFM (50 lbs/min at Sea Level) | Not Enough |
Turbine | Wheel Material | Inconel 718 Super Alloy: Extreme Heat Tolerance | Unknown |
| Wheel Design | 49mm Exducer 76 Trim High Flow 9-Blade, 21% Lighter Than 12-Blade Design | 44.5mm Exducer 79 Trim 12-Blade Design |
| Housing Material | High Silicon Molybdenum: Resistant to Heat Cycling Cracks | Cast Iron Alloy |
| Housing Design | Single Scroll 0.71 A/R (9cm^2) with OEM Hook Up Points | Single Scroll Unknown A/R with OEM Hook Up Points |
Wastegate Design | Internal | Internal Wastegate Design: 28mm Flapper Valve | Internal Wastegate Design: 27.5mm Flapper Valve |
| Actuator | Large Diaphram Billet Housing With Adjustable Rod | Small Diaphram Stamped Steel Housing Non-Adjustable |
| Port Size | 24mm Port: 12% Larger Than OEM | 21.5mm Port |
| Turbine Outlet | Increased Outlet Size Improves Flow Around Wastegate Port | Non-Optimized Outlet Restricts Flow Around Wastegate Port |
Installation | Drop-In | Includes OEM-Style Coolant Line, Turbine Gaskets, Studs and Crimp Flange Nuts | OEM |
Quality Control | Balancing | Turbo Technics CHRA Balancer up to 250,000 RPM | Unknown |
Warranty | Coverage | Limited 1 Year/Unlimited Miles | Mazda Powertrain |