My Car! 1988 Toyota Supra Turbo Targa 5-speed

[Maengelito]

its a legitimate question if he wants to get a turbo timer

Well, all turbos, water cooled or not have oil circulating through them. Water cooling is just a method of using coolant as a heat sink to reduce the coking effect of oil in the turbo's center housing, increasing the longetivity of turbo life. I'd like a turbo timer to simply keep the car on after shut down so the hot oil can circulate out of the turbo instead of just sitting there. If you're saying that water cooling negates the need for a turbo timer, I don't think thats correct...I think its beneficial either way.

having a turbo timer wont hurt and if its for piece of mind, then thats fine. a water cooled system is kept under pressure. natural heat convection will circulate the coolant for a more even cooling of the entire system which would negate the need for a turbo timer on a stock piece. the oil cooled part will not circulate oil when the car is off. like i said, it wont hurt to have, but its definitely not necessary.