Outer Limits 4x4 Board

gday turboing a 3L toy, the turbo im running is only oil fed i was thinking of running a oil cooler inline from the turbo return to sump? can any one see any issues in doing so?

cheers

James

wouldn't it be better on the feed to the turbo?

It is not needed, when something is not needed its just another thing to go wrong 300k's from home or mobile reception.

Twistinchassie wrote:gday turboing a 3L toy, the turbo im running is only oil fed i was thinking of running a oil cooler inline from the turbo return to sump? can any one see any issues in doing so?
cheers
James

Yes, the turbo return line isn't pressurised and relies on gravity and a smooth transition to the sump. Introducing an oil cooler at this point will back up the oil to the turbo and cause major smoke issues as it gets past the turbo oil seal and into the compressor housing.
Regards Andrew.

Yep oil will back up from the cooler and blow out past the seals.

I didnt have a large enough drain line to the sump and this is what i found to happen.

berad wrote:It is not needed, when something is not needed its just another thing to go wrong 300k's from home or mobile reception.

Whilst this is true that it is not needed, it is not all that accurate.
The enging oil has to primary functions, to lubricate and to transfer heat. The more heat remove from critical components such as crankshaft and bearings, turbos, camshafts etc the less stress on the engine and the longer the life span of the engine. Engine oil coolers are one of the most under rated mods. Anyone that uses there car in extreme conditions will gain advantage from an oil cooler.
If it is a quality product fitted sensibly it is not at all a liability, but more so an asset.
I'd suggest you find a way to fit it in the feed line or get an adaptor for the filter..
Dan

no worries thanks for your imput. i may try and look at doing the remote mount filter and run the cooler inline.

Regards
James

just check that you don't have an oil cooler in the block already.

3L as in toyota L series??

Would the turbo feed line flow enough for an inline cooler to be effective?

just check that you don't have an oil cooler in the block already.

3L as in toyota L series??

yeah mate 2.8 liter 3L engine number.

just check if it has an oil cooler in the side where the oil filter is. if it doesn't i think the 2lt one fits otherwise get one off the small truck version of the 2.8(eg dyna).

it already has an oil cooler on the block, and extra oil cooling is not usually necessary when adding a turbo to this engine. you can maximise the effectiveness of the built in oil cooler by ensuring the cooling system is in top condition.

if you are dead set keen on adding an oil cooler, get a sandwich adaptor to go beneath the oil filter. putting it in the turbo return line is a bad idea for all the reasons already mentioned and more. even if there weren't flow and restriction issues, the turbo oil feed just doesn't flow that much oil, so any cooling effect would be negligible.

you really want to have the return line as unrestricted as possible, and entering the sump at a level higher than the oil, so personally i wouldn't do it that way.

no worries i thought it would of been benifitial to run one but i was un aware of there already being one on the block, ive upgraded the radiator and am about to switch to thermo's. if the std setup will be ok id rather not have another oil line to blow/ come loose on the trail. i dropped the altenator feed line ages ago on daniel rd in the wattagans. not a fun tow home.

thanks for your imput

If you are switching to thermos because of over heating I would reconsider. I took the thermos off and fitted the engine fan and shroud to mine and it ran cooler.