plumbing in a turbo

[jsdvtr]

If the water feed is coming from the heater matrix and out before the thermostat, will there be less coolant going into thermostat, would this matter or would it cause problems?

For the return going to lower radiator hose if used the same size t piece as the coolant hose say 13mm ID, would this cause a restiction on the coolant coming out of the radiator?

Ive seen some put the feed and return between the matrix and thermostat.

[axsaxoman]

renaults = volvo,s and other cars use a little bosch pump which is controlled by ecu to keep running after engine is stopped to cool the turbo
this is the correct way to do it
use decicated pump and link to heater hoses
new pump is about £50 if you cannot find a s/h unit .
link to your turbo timer if you have one --or to a spare output on your ecu
the hose size for these pumps is 16mm --same as your heater hoses

[jsdvtr]

Does anyone know if the plastic/nylon t piece fittings will be ok for turbo coolant use? I cant find any the correct size i need in brass (15/16mm x 8mm x 15/16mm).

[Rossp]

Originally Posted by jsdvtr

Does anyone know if the plastic/nylon t piece fittings will be ok for turbo coolant use? I can find any the correct size i need in brass (15/16mm x 8mm x 15/16mm).

IIRC, I ran plastic ones on my first build and didn't have any problems.

[jsdvtr]

Originally Posted by Ross

IIRC, I ran plastic ones on my first build and didn't have any problems.

Ahh thats alrite then. Im guessing they would of been but just wasnt 100% sure. Just to find some 8mm banjos that are decent quality too rather than 13mm thats currently on my turbo, Just changing to 8mm for piece of mind really although danny (his old turbo) said 13mm is fine.

[blackie_2k5]

I ran plastic on my original set up before I went to copper and brass

No issues

[jsdvtr]

Where have you 2 got you metal t pieces from? Id rather metal tbh.

[blackie_2k5]

Local hydraulic engineering place

[tillygti6]

You can use the yorkshire type plumbing fittings, the hose pushes over them lovely. And they have a ridge to hold the hose securely.

[01amatti]

Originally Posted by jsdvtr

Where have you 2 got you metal t pieces from? Id rather metal tbh.

Search "barbed tee" on eBay dude followed by the size there's brass ones on there

[01amatti]

Originally Posted by 01amatti

Search "barbed tee" on eBay dude followed by the size there's brass ones on there

Item number 140665938044 might do ya

[jsdvtr]

Thanks, i'll have a look now.

Regarding the restrictor to push the coolant towards the turbo rather than past it. If i make a 15-16mm round piece of metal, what size hole should i use in the middle? Dont want something too big or yet be too small.

[01amatti]

As long as its smaller than the original hose your tee'ing from then the water will follow the path of least resistance I.e the bigger hole towards your turbo

[jsdvtr]

Originally Posted by 01amatti

As long as its smaller than the original hose your tee'ing from then the water will follow the path of least resistance I.e the bigger hole towards your turbo

So say im using a 8mm hose if i put a 5-6mm hole in for instance that should be ok?

[01amatti]

Not sure on size mate best thing to do is plumb it in, fire the engine up and see how much water is passing through the turbo pipes, if you want more put a restrictor in if that's too much increase the restrictor hole size

I've been floating around these turbo threads for a while now as I'm doing my own turbo build and have not started the plumbing yet, when I do I plan to steal Ross's idea and use a separate circuit for the turbo with its own header tank an d a small rad then use a Bosch pump to circulate the water round

[jsdvtr]

Made a little round nylon restrictor at work a while ago, made it 16mm OD and a 5-6mm ID hole iirc. Should work nicely!

Just to get this correct, does the coolant flow out from the thermostat backwards to the heater matrix?

[robster247]

Originally Posted by jsdvtr

Made a little round nylon restrictor at work a while ago, made it 16mm OD and a 5-6mm ID hole iirc. Should work nicely!

Just to get this correct, does the coolant flow out from the thermostat backwards to the heater matrix?

Other way round, the coolant goes towards the front of the car through the stat then into the radiaator

[jsdvtr]

Just double checking ive got this correct-

The coolant comes out to the heater matrix line from the front side of the head rather than from the back of the engine to matrix hose.

Just making sure ive got the feed and return to correct t piece if fitted in the matrix hose.