Separate Oil Feed for Turbo?

5th April 2011, 17:09

Is there any reason why you couldnt use a completely separate system for the oiling of the turbo?

Im thinking on the lines of;

Tank -> Pump -> Pressure Regulator -> Filter -> Heat Exchanger -> Thermostat -> ( Cooler ) -> Turbo -> Tank

Has anyone done this before? Is there any reason why you need a feed from the engine oil, or is it just because it's easier this way?

5th April 2011, 17:40

if the electric pump fails bad things happen. Less to go wrong with the mechanical one.

5th April 2011, 18:30

i agree with ryanmt, if your oil to the turbo fails its a new turbo, could ad a gauge but are you really going to drive looking at that all the time, just take the feed of the presure swith the adaptor is cheap or get a oil cooler reclocation kit it has a tap in for extra feed as standard on the kit

5th April 2011, 18:32

Quote:

Originally Posted by outrage_uk

Im thinking on the lines of;

Tank -> Pump -> Pressure Regulator -> Filter -> Heat Exchanger -> Thermostat -> ( Cooler ) -> Turbo -> Tank

OR

engine-> turbo.

5th April 2011, 19:05

you can take a feed from the oil filter relocation kit? i thought pressure may be down on that as its quite a long bit of pipe... if i can then it would be nice

5th April 2011, 19:48

you dont actually need that much pressure for the turbo, most have a restrictor in them. Just take a T peice from the oil pressure switch.

5th April 2011, 22:47

As there seems to be no good reason to not go about it this way - I think this it how I will do it and see how it goes.

I don't see the reliability of the pump an issue - usually fuel pumps last the life time of cars so there is no reason why an oil pump should be any different. Id keep an eye on things and if they went wrong id sort it.

Also makes fitting a turbo timer a 10 minute job - and probably a pre heater wired up to my alarm

Cheers for the replies.

5th April 2011, 23:01

No reason you couldn't. Fit a warning light for pressure. Dry sumps often use electric pumps and they feed the engine so no issue with reliability as long as you use something reputable.

As said though, there's no overriding reason to do it. Sandwich plate is adequate to feed turbo, pressure doesn't drop in liquid as it's incompressible and friction is negligible. Is there not a gallery blanking screw or anything that's useable?

5th April 2011, 23:18

Ive got a return sump and a T piece for the feed, so main reasons I want to do it are;

I can use high quality oil independently - just for the turbo.
I can easily wire a pre-heater for the oil when i open my doors with the central locking.
I can easily wire a turbo timer for when I turn the car off.
I can keep an eye on the exact oil temperature and pressure just for the turbo.

5th April 2011, 23:26

1. Good plan, turbo destroys oil.
2. You could, but it'll probably flatten your battery lol.
3. Yes
4. Yes

5th April 2011, 23:29

Quote:

Originally Posted by tathan

. Dry sumps often use electric pumps and they feed the engine so no issue with reliability as long as you use something reputable.

do they? ive only ever seen dry sumps use mechanical pumps..

5th April 2011, 23:35

I think this is what I will be using : Mocal 12 Volt Electric Oil Pump - MOCTCP1.

Pre-heating and turbo timer will be run off a small 12v battery on a split charge so I don't look like an arse with a flat battery every time I try and drive off

5th April 2011, 23:37

Quote:

Originally Posted by dannygti

do they? ive only ever seen dry sumps use mechanical pumps..

Yeah sometimes. Not that often tbf. We use 5 port mechanical ones for simplicity and reliability. Still, my other points stand

5th April 2011, 23:51

Quote:

Originally Posted by tathan

Yeah sometimes. Not that often tbf. We use 5 port mechanical ones for simplicity and reliability. Still, my other points stand

who sells them?? will be quite interested to see them actually. good for confined spaces. ive only ever used mechanical also.

6th April 2011, 00:08

BMW and Renault are using electric oil pumps now on their new engines I believe, new M5 has dry sump with electric pump. We'll probably see more shortly, mech pumps dump loads of oil back due to their linear flow rates so it's a big waste of energy and therefore mpg.

7th April 2011, 18:48

1 reason for it being part of the engine oil system is so the pressure can increase and decrease with revs/turbo speed. Thats something you need to look into. As said tho, turbo's do not require much oil pressure.