Turbo cooling / oil
Turbo Mini Forums

Ok then i have been thinking lots about the turbo cooling on my build.

Hear is what i have been thinking, The water will come out the back of the block as there is a bolt in the the water way. Then to the turbo and then back in to the head at the bypass hose. as the eng will be dry decked would this work.

and can i get the oil from the side where the oil core plug was as i have taped all them out to m14 for grub screws

I hope this is not a pile of sh1t but i cant get it out of my head
Simon

I have started posting on Instagram also my name on there is turbomk1golf

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sounds good,

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thinking about it a bit more, can you stick the return from the turbo back into the header tank or top hose?

I'm thinking that really the turbo wants to be able to thermo syphon when the pump isnt running otherwise it'll just boil the water sitting in the turbo

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

Actually scrub that...

your idea should be fine.

lol

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

what about the oil then??

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

The oil will be fine,

I had thought about putting a banjo bolt into the oil gallery with some copper washers,

cool i hope this works then.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

Where is the hole in the block? Is it above or below the turbo? Sounds like you would be forcing water out of the block, up into the turbo, then back up into the head.

Sounds to me like your going to take hot water out of the block, super heat it in the turbo and then dump it back into the head. Doesn't sound good, I think it will just put too much heat into the engine.

If the van's new turbo is water cooled (haven't had it in my hand), it's going to be fed from the outlet of the rad and returned into the heater and then top hose via a re-circ pump.

Aren't all the gallery ends covered up? Crap picture, but I think the rear one is about 1/3 covered.

I have drilled and tapped a hole in the clutch side of the block just under the middle of thw two core plugs to fit a banjo to feed the turbo with relatively cool coolant. I then intend to feed it back into the top of the side mount rad. There will ALWAYS be a flow in this way. If you feed the coolant back into the head, before the thermostat, you will get little flow. It needs to be fed back into the cooling system at some point after the thermostat and before the pump.

There are only two oil galery plugs you can use for an oil feed. the one at the clutch end is down behind the transfer housing and the other is just visable underneath the water pump. The front plate does get in the way slightly but it shoulnt be too much a problem to get round that with a file.

ok then this is what i have got and have been thinking about.

I have started posting on Instagram also my name on there is turbomk1golf

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theres no oil pressure out of that one, only the front gallery.

o well thats done it. I well just go the normal way then.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

joe do you think the water will still work.

I have started posting on Instagram also my name on there is turbomk1golf

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Idealy I'd like to see the water re enter they system after the thermostat, but i do think it will work.

I presume you will have a side rad and an electric pump? will there be a header tank so the rad stays full all the time?

well i am not going for a thermostat as i am running a blanking plate now fine. also no side rad and yes an electric pump there will be a small swirl pot.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

Ah ok,

as long as there is enough flow through the turbo when running it should be ok,
if there isn't I think you'll soon find out... in which case you can either move the re entry point to the swirl pot, or restrict the dry deck pipe slightly to create a pressure diffential to make a bit of flow.

suck it and see I guess, worth a go as it'll make the pipe work neat.

BTW I had issues with mine chucking its water out due to the turbo boiling the water, as the turo is so high on mine it cant circulate, boils then creates an air pocket.

the dry deck will be restricted a bit as i have down sized it.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

in my honest opinion, there will be little flow of coolant through the turbo if you return to the head where you suggest, even if you are only using a blanking plate. You will get FAR better results if you return the coolant to the top hose, the rad, or the bottom hose.

Look at it this way, the pump pushes coolant into the block and through the head up to the thermostat (or blanking plate). the thermostat creates a resistance to flow and as a result pressure builds up in the head and block. Good :) If you take coolant from the block feed it through the turbo (a restriction), and back into the head at a a similar pressure, the resultant flow will be negligible, with only the effect of thermo siphon having any real effect.

Where as, if you were to return the coolant to any point AFTER the thermostat, and BEFORE the pump, you will have the biggest and best pressure difference to push coolant through the turbo, that you will ever likely see with a normally pumped coolant system.

Failing that, fit an electric shunt pump to the turbo cooling circuit, but there is no reall need if you plum it correctly.

Edited by Sprocket on 11th Nov, 2010.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

Sounds perfect,

what size hose would you lads recommend for the turbo cooling.

thanks simon.

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something around 10mm to 1/2",