Thread: 4BD1T Turbo Sizing and Performance Prediction.

Originally Posted by Vern

Kinugawa Turbocharger Mitsubishi TD04HL 19T T25 6cm OIL Cooled | eBay
Justin is this the one you got? I need to get some measurements off you if I can.

Yep, that's it. I also bought a weldable exhaust flange for the dump pipe which is not included in that kit. The same seller can supply one if you ask.

What measurements?

Ok thanks. As its in a rangie I feel it might be a bit tight one end.
Ok from say the rear flange bolt where the turbo bolts on, how long is the turbo both ways.
What is the diameter of the intake?
Is it easy to clock the turbo to help setup for pipework?

Originally Posted by Judo

Yep, that's it. I also bought a weldable exhaust flange for the dump pipe which is not included in that kit. The same seller can supply one if you ask.

What measurements?

Any updates on your one?

Once I get the measurements I need and know its going to fit OK, I will order one and should have it going in a couple of weeks, then I can let you know how it goes

Question about this Turbo, what's the 6cm Turbo housing all about? And will I need another actuator to run more boost (25-30 psi)?

Originally Posted by Vern

Question about this Turbo, what's the 6cm Turbo housing all about? And will I need another actuator to run more boost (25-30 psi)?

Mhi measure turbine housing size in square cm instead of a/r.

I bought a kinugawa actuator with a lot of different springs for different boost pressures. Haven't fitted it yet.

Thanks dougal. In the add it says adjustable actuator, then says something about .5bar, but if you would like 1,1.5 bar etc to let them know. That bit confuses me a little.
As soon as Justin gets back to me re the measurements I need, I will order one. Just a little concerned of its over all length and how close the intake is to the firewall.
I do think however I will have to relocate the actuator though as it will be in the way.

Let me know if this answers all your questions... Measured as exact as I could, but better not quote me down to the millimetre!

Overall length:



How far "out" it goes from the exhaust manifold. (Depth?). The compressor housing comes out marginally further than exhaust housing.


compressor in: 2" (altho strangely it measures to 55mm? My silicone hose that SQUEEZES over is definitely 2" tho).
compressor out: 2"

The adjustable actuator means you can take it apart and change the spring for a different rating. So depends at what pressure you are planning to set your waste gate, depends on which spring you want with it.

You can easily rotate the compressor housing where the actuator bolts on. It definitely won't work at "any" rotation though, as I know with the position I have rotated my compressor to, the actuator bracket no longer works. I think there is limited positions you can adjust it to. So depends on your configuration...