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 Compressor wheels come in many shapes and sizes, they are physically defined by two dimensions, firstly the Exducer ( the larger diameter ) this is given in mm, the second dimension is the trim, this is a function of the exducer diameter and the smaller diameter ( called the inducer ), this is done so engineers can compare the flow capacity of any compressor wheel against another. So for example, you may see one compressor wheel listed as 60mm 55Trim ( or 55T) and another as 60mm 50T, this allows us to determine that the flow capacity of the 55T is 10% greater than the 50T, but both are 60mm exducer diameter. So we can see that a GT2560 55T is not the same as a GT2560 50T. The objective of these changes in trim allows the engineer to fine tune the aerodynamic performance of the wheel to the individual application.
The same applies for the turbine side, each size of wheel has a range of trims that allow fine tuning. These trims are often larger than the compressor stage because the ratio of inducer to exducer is greater.
You may think that a larger compressor wheel would always be better, but this is not always the case. If you look at a compressor map the area on the left hand side of the map is the surge margin, this defines the lower operational limits of the compressor wheel, the right hand side shows the choke line, this defines the upper operating limits of the wheel. If the engine air consumption falls outside of the map ( i. e in choke or surge areas) there will be serious performance issues with the turbocharger that can result in damage to the turbocharger. The trick is to size the compressor wheel so that the engines air requirements fall entirely within the compressor map, too large a wheel and you will be operating in choke, too small a wheel and surge will occur.
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Step 2.
Choose a compressor wheel from the options below or select "keep as standard".
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| The BHP figures quoted are to be used as a guide only. Your specific requirements should be directed to the Technical Staff at Owen Developments either by our enquiry form or by phone between the hours of 9am-5pm weekdays only. You will need to provide details of engine type and capacity, maximum RPM, expectation and intended use and we will endeavour to help and advise where possible, as to the best turbocharger specification for your particular requirement. However it must be noted that Owen Developments are not liable for the condition and performance of the recipient vehicle, which in turn, may alter the recommended turbochargers performance and ability that is ultimately achieved. |
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| *all prices shown in the cart exclude VAT |
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Step 1. Select Your Base Turbo |
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Step 2. Compressor Wheel |
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Step 3. Turbine Housing |
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Step 4. Compressor Cover |
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Step 5. Actuator Capsule |
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| Fitting/Adaptor Kits & Gaskets |
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Step 6. Mounting Kits and Gaskets |
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 Please Note.
You can go back to any step and change your mind. Click on the item you want to change in the list above then make your new choice. |
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