Complete Turbochargers

Is your original turbo worn out, or does your engine need more air than it can deliver? This category contains complete turbochargers with compressor housing, turbine housing and core assembled as one unit. It is for you if you want to replace a worn turbo or upgrade your project.

Complete turbo or supercore?

A complete turbocharger is delivered fully assembled, so you do not have to reuse housings or parts from the old unit. If the housings on your current turbo are intact, a supercore – the core with shaft, wheels and bearing housing – can be an alternative. Both types are found under turbochargers. Here the range spans exchange turbos and remanufactured OEM turbos, e.g. for Duramax L5P and Ford, to performance turbos. Brands in the category include BorgWarner, Garrett, Turbosmart, Forced Performance and Industrial Injection.

How to choose a turbocharger

The right choice depends on several factors. A bigger turbo does not automatically mean more power:

• Power goal and rev range: A large compressor can deliver more air at the top end but typically builds boost later.
• Turbine housing A/R ratio: A small A/R, e.g. 0.64 on the BorgWarner EFR B1 6258, can give quicker response. A larger one such as 0.92 on the EFR B2 7670 can give less backpressure at high power.
• Wastegate and connections: Check the wastegate design and whether the inlet and flanges, e.g. V-band, match your exhaust manifold.
• Fitment: Replacement turbos are made for specific engines, e.g. the Mini Cooper S EP6. So check the part number against your car.

Installation and maintenance

Find the cause of the old turbo's failure before you fit a new one. It can be, for example, dirty oil, a blocked oil return or foreign objects in the intake. Typically change the oil and filter, prime the turbo with oil before the first start, and check the oil feed and intercooler pipes. With an upgrade, the engine management normally needs to be adapted to the new boost pressure.

Frequently asked questions

What is the difference between an exchange turbo and a new turbo?

An exchange turbo is typically a remanufactured unit where your old turbo is part of the deal. The terms depend on the specific product, so read the product description before you order.

Why do I need to find the cause of the old turbo's failure?

The same fault can damage the new turbo. Typical causes are insufficient oil supply, contaminated oil, a clogged oil return or foreign objects striking the compressor or turbine wheel.

Does the car need to be inspected after fitting a bigger turbo?

It depends on the car and the product. An upgrade that changes the engine's power output can require a re-inspection and notifying your insurer. An OEM replacement typically does not. Check the requirements for your car and the specific part number.