well I am almost ready to get the turbo up and running on my KA. Have almost all the parts just trying to figure out one thing. If I were to get a water-cooled turbo, where would the inlet and outlet lines be tied in with the cooling system?? It baffles me and if someone says tap the plastic radiator in some way, deff. not going to do that. I would get just an oil-cooled but you can't get a good one like that, and it takes alot more looking on ebay.

 

oil cool....def the way to go. no questions aboot it. don't go to ebay for it either. you get what you pay for....def words to live by when you build your car up.

 

does anyone know if the stock t3 on a 300zx is oil-cooled, or water and oil cooled??

 

Im 80% sure the 300zx turbo is oil cooled

 

actually its both, the earlier models, 84-85 are oil cooled, and then the 86-87 are water cooled, and after that the T3 goes down to a T25.

 

so i need to look for a rebuilt 84-85 turbo then??

 

going on your 95 240?

 

yup, 95 240sx need a internally gated oil-cooled turbo

 

which manifold did you get?

 

yup it is kinda strange it is a t3 manifold, short with the turbo flange facing the side, not up or down, but to the side.

 

side pic of the mani

 

another pic of the mani

 

the oil casings for the two turbos are the same, whether its watercooler of just oil cooled. you can run the watercooled turbo without water ... in fact thats what Im doing right now. just give it adequate time to cool down, as you would any turbo and you will be fine.

 

how would you run water to the turbo anyways from the KA's cooling system??

 

yeah, when I get around to it, Ill hack into the throttle body coolant lines, and string them over to the turbo. but for now, Im not going to hook it up till the summer, when it may actually need it.