funguy

I need help with the oil supply system for my twin turbo project. I'm confused at to how the oil supply is supposed to work. the pump and reservoir will be in my trunk.

I thought it went something like this.

option A "pushing" (Oil reservoir) -> to (oil pump) -> to (turbo) -> to (Oil reservoir)

But after reading other threads I see people doing it differently like this.

option B "sucking" (Oil reservoir) -> (turbo) -> to (oil pump) -> to (Oil reservoir)

i need direction and advice please.
I was going to get a Tilton or Mocal oil pump
http://www.tiltonracing.com/content....st2&id=222&m=d

I'm also concerned about about if option A is the correct option what pump to get to safely pressurize the turbos with oil with out blowing seals.

thanks

zintoatree

I guess I will add onto this instead of making another thread. I was planning on doing something like your plan B, I too feel slightly at unease to run oil lines all the way to the back of my car. My plan was to have a reservoir in the hatch of the z with a line running from the bottom to the turbo, from the turbo it will go into a oil pump then small oil cooler.

I think this set up has more benefits then running lines from the engine.
-no lines running from front to back then back to front
-oil temps should stay a little cooler (my car is notorious for running hot oil)
-you could choose a different oil for the turbo ( not really sure if this would matter)

The only cons I can think of for this set up is it would add weight to the rear of my car, but I would lose my spare so it should even out.

funguy

hi zintoatree, so are you going to run your oil pump post turbo like option b? What type of pump were you going to use? Do you have any idea how much PSI a pump should create?

oh by the way do you have a 350z?

zintoatree

Yes the Pump would be after the turbo and pumping straight into the cooler then back to the res. not really sure on the pump I'm just throwing around ideas right now before I get serious into researching parts. I'm not really sure on the pressure of the oil but I figured 10ish psi should suffice. I have a 370z.

tamago

is't it the same? it's a loop, no matter where the pump is, it's going to send oil through your turbo.. i suggest post-cooler, your pump will last longer if it's moving cooler-rather-than-hotter oil. Will you have an oil reservoir? you would want a way to vent the system, correct?

blkredline

Those options may work,but i'm not sure of the longevity of them. If i'm reading it right then option A would have to have the turbo above the resevoir so that way your turbo is always draining oil and not building up on the drain side. Option B would be sucking oil threw your turbo. Sucking oil threw the turbo could pull the oil seals out of your turbo.

zintoatree

The reservoir would more than likely get snagged by the first speed bump if it was placed under the turbo. I was thinking more let the reservoir be mounted above the turbo, feed down into it the turbo, into a pump, into a small oil cooler, then finally back to the reservoir. Tamago you might be right about the switching of the oil cooler and pump in my little diagram, but it being a rear mounted turbo it will probably operate at a fraction of the temperature it would be if it were mounted on the engine. With the lower temperatures it might not be that crucial to put it behind the cooler. You're right about the vent though, you would need to work out a good vent system. Blk I was just switching around the oil system they use on STS that's why I had the pump behind the turbo. If you put it before you could also have the reservoir around the same height as the turbo, tucked around in the rear somewhere instead of in the trunk.

vollosso

Hey Im looking to do a system like this possibly

I really like the "plan B" route any idea if this will actually work?
I will call the turbo manufacturer tomorrow to ask how much vacuum turbos can handle.
Any suggestions on a better oil to run?

Any insight?

My system is looking like a weldon 9200A, 2.5l tank and a JB turbo.

busa4

did you ever get this figured out?
there are two types of oil systems for a turbo.
there is an oil supply system and there is an oil return system. these are two different systems. i am unsure what type your trying to setup.

most turbos are supplied oil by the engine. tapping into the oil pressure sensor is the easiest way. if your going to supply the turbo oil with a seperate oiling system then you must make sure your pump is large enough to supply the turbo with 40+ psi of oil pressure.

an oil return system is used only when the turbo is sitting too low and can not gravity drain the oil back to the engines oil pan. this is referred to as a scavenge system.

the scavenge system uses an electric pump or it can be a mechanical pump driven from a camshaft/crankshaft. it takes the oil from the turbo drain and it gets pumped back into the engines oil pan.

LMD14

Hi

I have just completed a rear mount conversion on my e55 amg. the only problem i have now is running the oil return lines. I am abit worried that the pump will run dry and burn out. I have got my oil catch tank in the boot and i am going to mount the oil cooler the boot. Should i mount the pump before or after the turbo or after the oil cooler?