Dedicated turbo oil supply

[thechuckster]

I don't think that just running oil through a stationary turbo would be enough as the whole assembly would be quite hot. I've 'heard' of fins slowly being bent by gravity from the heat making the metal more maluable(correct spelling?), is there any truth to this?

extremely unlikely (i'd call shenanigans actually) - if you stop the motor while the turbo is red/white hot then you'll have issues with the bearing failing and the oil turning into charcoal - but ceramic turbines dont melt, and the metal wheels are designed for a pretty damn hash environment.

[30psi 4agte]

in will work. I have one set up on my turbo bar stool.

In a car though i would not reccomend it. ( just my opinion ) reason for this is that i dont like the idea of running a seperate system as the oil will still need to be filtered ( esp in a non roller ) and i like to keep an eye on the oil pressure of the system. ( could put a seperate gauge on though) then it starts to become cluttered with two oil filters two oil pressure gauges and all the extra lines.


P.s the reason for a turbo timer is to allow the excess heat in the turbine housing to come down slowly to prevent the cracking that can occur from a shut down when it is hot and cools rapidly

[V-Na]

So if you've got a flow of oil through a hot but stationary turbine, will it still cake?

That's the $64000 question. If you supplied it at high pressure so as to generate a flow with enough turbulence to eliminate any stagnant oil pockets there shouldn't be a problem. Although the turbulent flow might not be optimal while the turbo is operating, but this could be solved via a two stage circuit (ignition on/off) controlling the oil pump.

I've 'heard' of fins slowly being bent by gravity from the heat making the metal more maluable(correct spelling?), is there any truth to this?

I wouldn't call that impossible. I've heard of panes of glass slowly flowing out into pair shapes over decades under gravity.

[-=DV=-]

a mate of mine was toying with this idea for his twin turbo cherade, after every1 he knew telling him it was a stupid idea, and 2 performance workshops telling him not to waste his time..he abandoned it lol

[Vios-GT_07]

do you mean Charade? the daihatsu thing? Jeff from DaiAuto in CHeltenham, Vic has done it... G-111 or 110 if i'm not mistaken.. didn't do the self cooling standalone oil thing though..

hm... it's a pretty good idea .. if the turbo had a sump, oil cooler, oil pump, a whole oil system going... it would indeed throw out the need for a turbo timer.. i still think it's cool if the car turns itself off after a while.. but yea i also think that turbos don't need to get that advanced at this stage because borrowing from the sump is fine at the moment. Not just that, but also the millions of bucks spent on RnD when developing a car is testimony to this. Then again if this idea works, it's worth millions more when shown to the manufacturers..

Any thoughts about diesel turbos? they don't get that hot to warrant turbo-timer / cool down? or they need it even more (if i'm not mistaken it runs at higher psi than petrol engines, however the engines don't spin that fast and don't generate so much heat)..

[kingmick]

lol have you all finished? lol

what you want is something that we use in racing, and oil accumulator. Moroso making them in diffrent sizes. they store oil under pressure and pushs it into the oil when you have surge and you can use them with a swtich to cold prime your oil before you start aswell.
pretty cheap to by for surge insurance.
http://www.moroso.com/catalog/catego...?catcode=13600 pdf: instructions there aswell !
http://www.moroso.com/articles/artic...&catcode=13600


Rocket industries have them in stock or should have

[kingmick]

This could well be a very silly idea...but here it is anyways.

A seperate, closed-curcuit oil supply for the turbo, with a small reserve, and an electric pump.

So there's always clean oil for the turbo, you don't have to mess with the factory oiling system when turboing the car, don't have to cut oil returns into the sump etc etc...

And, as an added bonus, no need for a turbo timer! Just have a small controller which keeps the pump running for a few min after shutdown...

Ideas, suggestions?

RM.

indy cars use this in reverse for there oil return for the turbos as there mounted so low!
but just get an accumulator in the above post.

[mullett]

hey, that's cool, I like it. Is there an automatic version, so you're not always opening and closing valves? And how much are they worth roughly? I take it they simply store pressurised oil from the engines main supply while it's running, and then re-distribute it when need be?

RM.

[kingmick]

hey, that's cool, I like it. Is there an automatic version, so you're not always opening and closing valves? And how much are they worth roughly? I take it they simply store pressurised oil from the engines main supply while it's running, and then re-distribute it when need be?

RM.

yes they store presurrised oil and it is automatic! the stop valave disconnects it.
there around $400 or cheaper. cant remmeber.

[Joshstix]

I don't see how a oil accumulator helps with having an oil circuit for the turbo that is seperate to the engine oiling system though. Or were you only talking about getting oil flow through the CHRA after shutdown?

If you're looking for a useful oil pump that could be bought reasonably cheaply then the power steering pump from an SW20 could be a good thing.

[kingmick]

there is a good reason no one runs a seprate pump for oil supply to a turbo! i have never come across anyone that is willing to take the chance on an electric pump to run the oil supply for a turbo! even someone with no knowledge at all will know while your engine oil pump is running so is the engine. there is a huge amount more chance that a seprate pump will fail over an engine driven pump! Filtered oil for the turbo i will agree with but not a seprate pump, its asking for trouble.
hands up who has blown a fuse for an unknown reason? and so your $2000 plus turbo has no oil supply and will die before you can say, no oil to the turbo!
so you can hook the accumulator up to an oil light so both your turbo and engine get oil under surge or if the engine lunchs itself, so tell me which is the better setup?
i am talking the real world and not about shut down at all! turbo timers are fine for shut down, and accumulators work great for preprime with a normal or thicker oil. for the money they are great safefty margine for the smarter people!

[30psi 4agte]

lol ... Amen to that one brother !

My thoughts exactly

[Joshstix]

Mick, I'm not saying it's a good idea. I was wondering why you weren't answering the question of the thread though.

The original poster is wanting to setup a seperate oiling system for the turbo as it will be mounted too low for effective return to the sump apparently. I just don't see how an oil accumulator could be of any use to the original poster. I guess I'm just not equipped to tell everyone what it is they really want or need.

[kingmick]

i see what you mean, Josh.
I thought i answered it by not answering it and giving another answer!

[30psi 4agte]

This could well be a very silly idea...but here it is anyways.

A seperate, closed-curcuit oil supply for the turbo, with a small reserve, and an electric pump.

So there's always clean oil for the turbo, you don't have to mess with the factory oiling system when turboing the car, don't have to cut oil returns into the sump etc etc...

And, as an added bonus, no need for a turbo timer! Just have a small controller which keeps the pump running for a few min after shutdown...

Ideas, suggestions?

RM.

Not having a dig at you josh but it wasnt cos the turbo was mounted too low.

ahh tell me to blow it out my arse .