Can anyone ID the size of my Apexi RX-6 turbo from its serial number???

[Chris Wilson]

My RB25DET engine R33 GTS-t came with a single, remote wastegate RX-6 series Apexi turbo on it. I know Apexi make 3 different sizes of turbo for that unit, and I need to find out which I have. Can anyone at all help me ID this thing please? Specs are as follows, taken from the IHI turbo ID plate on the turbo itself, and from the casting of the exhaust housing itself. Thanks, really desperate to ID which one this is!

Spec: VA4 900 32 9804

Serial No: RHX6 03016C

On exhaust housing casting : P25F

[paulr33]

sounds like the p25 model which is the bigger of the 3

[Roy]

:confused:

Sorry, cant really help. One thing is that IHI/Apexi rate their exhaust housing in mm rather then inches like Garrett. So P25F is essentially an A/R housing of around 1.00-1.07

[Chris Wilson]

OK, found what it is now, thanks. So next query

The turbo is the TCW76LS-P25, having a comprssor wheel size of 56 /82mm and an exhaust housing size of 25mm. Does Apexi give an estimated max HP rating for this unit, running in its efficiancy island? I was hoping to use it on an RB26DET engine at standard stroke on 87mm bore, with 280 degree duration 11.25mm lift Tomei "Procams".

[paulr33]

Manufacturer,Model,Power (PS),Horsepower,Comp Trim,Comp Inducer (mm),Comp Major (mm),Turbine Trim,Turbine Inducer (mm),Turbine Exducer (mm),Wastegate Type,Flange Type,Ball Bearing,Housing A/R8

Apexi’ (IHI),RX6B TCW76LS,520,513,47,56,82,87,61,57,Ex,RX6B,Y,"P16, P18, P20"

[paulr33]

rated at 520ps