legacycentral bbs

ok I searched a bit but I didn't find exactly what I was looking for

for people running their own turbo-ed NAs, how are you cooling your turbo? are you running one that is both oil and water cooled? how are your cooling systems set up?

thanks,
Sam

my old setup was water cooled... I ran the coolant by T-ing off the heater hoses. Worked pretty good. My sew setup is just oil.

you could also run the coolant line off the IAC valve. it wouldnt have near the flow of heater hoses, but would be nice and close to the turbo.
I have heard that on some cars, cooling the turbo with the heater hoses makes your heater work a little better.

yeah, running it off the IAC or the TB would work fine too (you'd want it inline, after either of those devices) The main purpose of the watercooled CHRA is for cooling after shutdown. It actualy keeps the CHRA from cooling to fast and prevents coking, therefore eliminated the need fora turbo timer.

It also does help keep the bearings cool during periods of peak heat stress.

I really wouldn't recommend the IAC coolant line. As mentioned the flow is severely limited compared to the stock turbo legacy coolant lines. Plus I doubt you'd really get any reasonable convective cooling/circulation with that line.

Other thing you'd need to make sure you do if you went this route is tie into the IAC valve or TB coolant lines at the exit of the IAC valve so you do not alter the temperature of the coolant entering those devices which could change how they perform.

Example would be the IAC valve. If it sees coolant temps too high, too soon, the car may have a weird idle.

wouldnt the small flow kinda back up in the turbo and cool at a lower rate, but still be cooling?
or could that boil the coolant in the turbo.
I agree about not sending water that is about to boil through the IAC.

I am running my cooling line from my heater core works great just get a plastic T and a few clamps. For oil I am running my feed from oil pressure sensor under the alternator that was re taped for 1/8 npt then you can find a 1/8 npt T from summit racing or any other car store and run your feed line. Return is back to the oil pan.

i just ran the in line to the heater to the turbo and put a piece of line from the turbo back to the heater.

Running the coolant off the heater plumbing really is the easiest way to go. The lines are the same size as many of the turbos out there and you don't have to deal with altering the hose size like you would with the TB lines.

As for the oil, we generally tap it from the sensor on the block, just under the power steering pump. Then for a return, what I have used is a line added (welded) onto the oil pan.