watercooling (turbo)

[NOLAW]

ok i saw in a picture recently a water cooling setup (for the turbo) that interested me,
It had a line coming out of the top tank of the radiator and it went into the turbo and then the line exited out and went to......im not sure as i couldnt see where it went,

could someone tell me if this would be a allgood setup for my 4agte and if so where does the line go to after exiting the turbo.. i have a idea but woud rather know from people with more experience than myself as i am unsure at times and a second opinion is good


cheers

[Akane]

AFAIK it's bad idea to feed water too cold into the turbo, as this will produce shock cooling. Usually water is taken downstream of the engine (nice and warm) to feed into the turbo, exit out and then rejoin to the rest of the stuff before going into the radiator.

[Lloyd]

Do you really need water cooling anyway?

[NOLAW]

well its set up for both oil and water cooling, wouldnt it be safe to go both or is it really not that needed?

also how have other people gone about plumbing up there water cooling setups?

[Bazda]

ditch the water cooling, just makes for more hastles and more plumbing.
But if you want to use it most people tap into the water lines that run to the throttle body.

[Akane]

as fivebob has shown before, using a properly plumbed watercooling drops turbo core temp from 450c~ to 350c~, really worth while if you can do it.

I didn't do it on my Garrett due to clearance issues, but if I can I would.

[barryogen]

[quote="Akane"]using a properly plumbed watercooling drops turbo core temp from 450c~ to 350c~, really worth while if you can do it. [quote]

Fark... thats quite a lot.

[matt dunn]

and aparrantly the garrett bb turbos have plastic parts? inside them,
as so no water hooked up = no warranty.

[NOLAW]

so running waterlines from the radiator directly to the turbo is a no go?

[matt dunn]

i run mine one off each radiator hose,

[NOLAW]

is there a chance i could get a pic of your set up matt? can pm them to me if you like

cheers

[Crampy]

My ones are just T'd off the waterlines going to the Throttle body, same size line, easy. T pieces are cheap and easy to find.
No need to get fittings to join to the big radiator hoses.

[tsoob]

Do you really need water cooling anyway?

depends on the turbo, some yes some no most of the older garrett ones use a plastic ring inside them that prefer watercooling as well as oil cooling. check with your turbo builder is the best bet.

[NOLAW]

mines a s4/5 rx7 turbo rebuilt and highflowed to a to4e, will have a talk to the builder and see what he thinks

[matt dunn]

is there a chance i could get a pic of your set up matt? can pm them to me if you like

cheers

No, well not at the moment anyway.

the car is in bits all over the show at the moment,
and the lines are so hard to see in place anyway.

I run alloy water pipes as they have to run around and over the turbo,
so I run braided lines and dash type weld on fittings,
so quite a high tech expensive way to do it,
but had to do that due to the heat in there.

[steve murch]

bearing cages inside gt turbos are made from polyamide resin to which is only rated to around 160-180 degrees f, even oil temp work hardness them.
unfortunately the thrust loading is taken on the exhaust end to which also runs the highest temp which doesn't help.
i make replacement cages that eliminates that problem but the thrust loading is the same and there's no compensation for skidding of the bearings nor bearing wear.
to which reduces friction some what but shortens bearing life.
there is far better bb turbos out there but that another story