Getting more power out of a B230 is one of the first steps for many Volvo owners when it comes to tuning. A manual boost controller is a nice start to go to 160-180hp; for those who want more need to take a look at a turbo upgrade!
A common upgrade is the turbo of a Volvo 850 T5. This turbo can be found in a lot of junkyards because there are already quite a few of this type of Volvo up for demolition. The turbo you’ll find on the T5 engine from an 850 is the TD04-15G which is a great replacement for the small standard TD04-13C. On a B230 turbo engine you can take into account approximately 220hp in combination with the correct associated upgrades such as: chips, injectors etc.
The TD04H-15G is as good as “bolt-on” it can be easily mounted on the original manifold. The turbo probably needs to be clocked to ensure that the oil supply comes from above and the compressor house points in the right direction. Clocking a turbo is simply rotating the core, turbine house or compressor house in correlation to the other components.
Both turbochargers have a conical flange which allows the original downpipe to be mounted without too many adjustments.
Do you want to do it properly at once and raise the power to about 300hp? The TD04 16T, 18T and 19T are often chosen and now proven options when it comes to achieving high power from a Volvo 740/940 B230 turbo engine. These turbos can also be obtained very well via various webshops from Sweden and Norway for approximately 600€. You won’t often see these turbos passing by on ad sites like marketplace or Ebay.
Mounting these turbos requires more modifications to the Volvo besides mounting the right injectors, chips/standalone ECU and large MAF. On these turbos, a number of things need to be clocked so that it can be used on the B230 engine. A result of the clocking is that the wastegate actuator ends up in another place. However, this is easy to remedy with our wastegate actuator bracket which puts everything back in the right position.
Another important item is the downpipe. These turbos use a flat flange instead of the conical flange that has the standard downpipe of a B230 engine. This means that a downpipe needs to be tailored to what is recommended to get the most out of these turbos. An upgrade to 3 inches is definitely recommended.