I have a Garrett T3 turbo with water cooling capabilities, I am curious where the best place to run this line to and from is, any help is much apreciated, i already have the oil lines ran and was also wondering if its a necessity or not to use the coolant,
Thanks,
Rex
no u dont have to use the coolant ports. just plug them up with brass plugs, and it will be like a oil cooled turbo. no probs at all!
yup. sean is right. no need for water cooling that T3 unless you are running heavy boost. Saab's come watercooled from the factory to help keep the turbo in good shape but it's really not necessary. Just plug them with brass plugs and run the standard oil cooling. It'll be just fine. You plan on running a turbo timer?
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OK, thats good to know, thanks.
If though, I wanted to, would I have to rig up a whole new line or could I reroute one of the other coolant lines through the turbo? and yes I do plan on running a turbo timer.
woah woah thats prbably not to smart of an Idea. Cutting off the water line is prbably not smart. there there to help reduce oil overheating in the turbo. yes you can do it but useing it will save you from much more frequent oil changes.
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Kick azz is my boost hero!!! 
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i didnt even plug my water holes up on my t3/t4 turbo they said I didnt need too
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Do you need to use them? No.
Think about it, you are spinning something at 150,000 rpm with hot exhaust gas, with nothing but a trickle of oil to cool it. Water cooling can't be a bad idea. Run your car without coolant, see what happens to it.
I suggest spending an extra hour or two and plumbing the water lines. It can't hurt.
To answer the question, the water lines that run from the engine to the heater core (inside the car) are right below where your turbo probably is (assuming you are talking about the Z24 in your profile). So: engine out - turbo in - turbo out - heater core in - heater core out - engine in.
Matt S.
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Built not bought, check that!
It's not necessary. Just let the car cooldown before shutting it off.
Water cooling basically just allows you to shut the car off without worrying about waiting for the turbo to cool down. When the car is shut off the hot turbo causes convection currents in the coolant that effectively circulate coolant through the turbo to cool it.
If you let your car cooldown properly your turbo's longevity won't be affected by leaving the coolant lines unconnected.
Mine aren't connected.
mj
Save your turbo. Let the car idle for no less than 45 seconds after running it and if running it hard for extended amounts of time, about a minute and a half. You will keep your turbo from getting shaft play and reduce the possibility for sludge buildup.
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thanks for the help, I think I'll leave them disconnected for now. what about a head gasket, I got the cometic head gasket and want to know how much of a pain it is to put on, will I have to pull my intake and exhaust or can I leave them connected to the head, thanks,
Rex
If you don't know how much work is involved in changing the head gasket then you probably shouldn't do it yourself.
Yes, you'll want to remove the intake and exhaust ... and timing chain housing, cam towers, fuel rail, alternator, pulley ......
mj
you will be just fine on a stock head gasket for now. it might be a good idea to replace it with an OEM just because it's a good idea to do.
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