Turbo Piping

[Emmanuel1992]

I just bought a rb25det that has been slapped in a VL commodore, but this isn't about the car.

I need to know how you pipe a turbo? Embarrassing question but this is my first turbo setup and being a 4th year mechanic and not knowing much about them is quite an embarrassment.

Can someone please tell me how to plumb a turbo, and how to tell if it's a stocka or something amazing haha

:-) thanks :-)

[Ben C34]

Google image search.

[luke gtr]

more info if possible?

like, piping to the turbo intake?

on the turbo outlet?

exhaust feed?

or exhaust outlet?

coolant or oil lines?

as above google image search will help a fair bit.

[Emmanuel1992]

I tried that I don't really understand it, I need to know the intake piping :-)

[luke gtr]

so, airbox to centre of front of turbo.

then, from front side outlet to intake plenum.

[Emmanuel1992]

How does the inter cooler get plumbed in

[luke gtr]

How does the inter cooler get plumbed in

anywhere it will fit with airflow.

and any combo of pipes to plumb it between turbo outlet and plenum.

[ido09s]

Easy as

Above pic is the front of a turbo. The middle section is where your air cleaner needs to go. Either by way of an intake pipe or by directly bolting the air cleaner to the turbo. Being an RB25 in a VL it may have an air flow metre, if it does you will need to put that between the front of the turbo and the air cleaner

The outlet of the turbo, that bit at the bottom left, is where your intercooler pipework starts. It should end at the throttle body. Somewhere between the outlet of the turbo and your throttle body is where your intercooler goes.

Edited November 17, 2013 by ido09s

[scotty nm35]

Don't forget, it needs to have a tututu valve somewhere between the turbo outlet and the throttle.

[AngryRB]

while on this topic, is a 2 1/4 inch pipe best for the whole job or should it come up to 2 1/2inch from intercooler to the throttle?

Edited November 17, 2013 by AngryRB

[Emmanuel1992]

Does that depend on the size of your piping on your turbo? And intercooler and throttle body?

[Emmanuel1992]

That's what I'm dealing with

[Blackkers]

Just chuck a U bend on there and instead of an intercooler run WMI. I wonder if anyone has ever done that

[scotty nm35]

2.5 inch generally, good for 300+kw.

[RBrennan25]

The top pipe in that photo connects to the intercooler outlet and the bottom pip connects to the intercooler inlet

[RBrennan25]

Just use 2.5 inch piping. Unless you're after about 350-400kw it will suffice

[Emmanuel1992]

Yer I was gonna do that but my mate said I could blow It upc

[Emmanuel1992]

Cuz of no cold air

[Emmanuel1992]

Ok the only reason I was looking at piping it up is so I can test the turbo and see if it works and make sure it's not blown, what's another good way of testing it?

[ido09s]

If all you want to do is test the turbo just do a bodgy on it and join those two pipes together somehow