Buying a Turbo – Tips and Advice

Turbo part

When you are looking to buy a turbo to replace your old one it is important to match up the part numbers to be sure it’s the correct one for your car. Get it right the first time ­ You do not want to purchase the wrong one and then go though the process of finding the correct one all over again.

At Your Car Spares Ltd ­ What we test and look for!!!!

Ever part is different so we need to look out for different things for different parts. The first thing to do is check if the engine light on the dashboard is on , however , an illuminated engine light doesn’t always mean it is a problem with your turbo so you should get it checked by a professional who has the correct computer diagnostics equipment to diagnose the problem. The next thing we look for is a smoky exhaust. If there is a problem with the seals or the housing of your turbo then you may see a blue or grey smoke coming from your exhaust, this is caused by oil getting into your exhaust system. If you hear a whining noise coming from your engine this can also mean your turbo is failing.

Once we have removed the turbo from the car we can check the parts and the general condition of the turbo to ensure none of it has been damaged or looks badly worn. The final testing of the turbo involves checking the shafts for play. Testing the shafts involves you moving them from side to side and in and out. When moving the shafts from side to side you will feel some movement which is perfectly normal , but if the shafts touch the housing of the turbo then you should look to replace it. When moving the shafts in and out you don’t want to feel any play at all. The amount of play allowed in the shafts is all dependant on car it is from because some cars will have a bigger turbo than others.

Where to find the Part Number

In the following images we show you where to find the part number so you can cross reference it with your part number. On the turbo you should find a manufacturer part number and an original equipment manufacturer (OEM) part number which is from the vehicle manufacturer. Both of these part numbers should be next to each other on the turbo housing.

turbo-number

turbo-seriel

How a Turbo works ?

When you start your car you will notice that there are fumes coming from your exhaust , this is caused by gas which contains kinetic energy. In a turbo engine there will be a tube or hose which directs this gas into the turbo’s turbine causing it to spin thus making the compressor spin. Once spinning it will withdraw air which gets sent into the engine to create more power. The turbo has to work extensively hard because it needs to spin at high speeds to make the turbines and compressor spin , therefore an intercooler is installed to cool the air being produced by the turbo.

Compressor

Compressor

turbine

Turbine

Benefits of having a Turbo.

The obvious benefit of having a turbo engine is that it will produce more power , but there are more! Another benefit is that a turbo engine will consume less fuel than a non­turbo engine. This is because the litre of the engine will be smaller in a turbo car because it can compensate for the difference in power through the turbo; it is estimated that an engine with a turbo can have up to 20% better fuel economy than a non-­turbo engine. Also because the turbo uses gas that would usually be wasted in a non-­turbo engine it is better for the environment.

Parts sales banner

Negatives of having a turbo.

One thing that people who have turbo engines talk about is ‘turbo lag’. Turbo lag is when you push in the throttle pedal on your car but the engine doesn’t produce the power straight away. The cause of this is from exhaust gases not being at the correct pressure to spin the turbines. Another negative is the potential cost if something is wrong with your turbo. Also because the turbo gets incredibly hot it will use oil from the engine which will mean you will need to top up the oil in your engine more regularly.

back to Car Parts