- Location
- Melbourne
- First Name
- Ed
- Drive
- 2000 Legnum VR4 Manual, Ford Territory family runabout, BMW K1300R.
For those of you which are curious about this, there are differences between the front and rear turbos that stop them from being swapped between the front and rear of the motor, even if you remove the compressor housing.
The differences between the compressor housings are merely the holes tapped in the housing for the wastegate mounts, so this is easily overcome. However the differences in the Centre Housing and Rotating Assembly (CHRA) are not as easily managed. The only difference is that the coolant line return hose mounting point is different, but it is not easily fixed.
You can see from the above image that on the left turbo (rear turbo example) that the upper hole has been tapped and the lower hole has been plugged. On the front turbo this is reversed; the upper hole is plugged and the lower hole is tapped.
The differences between the compressor housings are merely the holes tapped in the housing for the wastegate mounts, so this is easily overcome. However the differences in the Centre Housing and Rotating Assembly (CHRA) are not as easily managed. The only difference is that the coolant line return hose mounting point is different, but it is not easily fixed.
You can see from the above image that on the left turbo (rear turbo example) that the upper hole has been tapped and the lower hole has been plugged. On the front turbo this is reversed; the upper hole is plugged and the lower hole is tapped.