Are all T3's water cooled?

 

Nope:

Link

Good deal on the above turbo, BTW.

Frank

 

Thanks

 

no, but all water-cooleds don't have to be.

 

If its a GT series you better water cool it ( if its ball bearing that is ). If you have a sleeve bearing turbo you can do without the water cooling.

 

true, but no reason not to either way.

 

you would be correct

 

I believe if you have the ports for watercooling, then you should certainly use them. It was designed to be cooled with water, and if it only has oil.. it would at least in theory become much hotter, which is bad mmkay.
-Michael-