Turbo coolant line?

[Diff Operator]

How hard is the coolant line going into the turbo to replace?
If the turbo is already oil cooled as well, couldn't you just plug the coolant line off?

[Piddy]

If it is the hard lines you are replacing.... pretty simple. Two 10mm nuts, couple clamps. Get a new gasket, burp the coolant system and you're good to go. Toyota water cooled the turbo for a reason.... I wouldn't recommend plugging anything.

[CompanyFlow]

By any chance, do you know someone named Kristy?

[Diff Operator]

I know a couple of Christy/Kristy/Christi s.
Where at?

[CompanyFlow]

Not you, Ishcoleobo.

[MR2 Guru]

If youre talking about the HFH or the HFHOE here are some pics.

http://www.mr2oc.com/showthread.php?...ighlight=HFHOE

Not a very easy thing to tackle for your first time, and ALWAYS do both at the same time.

Absolutely do not block off the coolant lines for the turbo. I've seen a few of these cases come in where the turbo oil seals were absolutely obliterated and the car smoked like a Jamaican. The oil lines to the oil/water cooled turbo are not sufficient enough to cool efficiently alone. Although there are strictly oil cooled turbos, this is not one of them.

As quoted from TurboByGarrett "Turbo Tech 101":

" Oil & Water Plumbing

The intake and exhaust plumbing often receives the focus leaving the oil and water plumbing neglected. Garrett ball bearing turbochargers require less oil than journal bearing turbos. Therefore an oil inlet restrictor is recommended if you have oil pressure over about 60 psi. The oil outlet should be plumbed to the oil pan above the oil level (for wet sump systems). Since the oil drain is gravity fed, it is important that the oil outlet points downward, and that the drain tube does not become horizontal or go “uphill” at any point.
Following a hot shutdown of a turbocharger, heat soak begins. This means that the heat in the head, exhaust manifold, and turbine housing finds it way to the turbo’s center housing, raising its temperature. These extreme temperatures in the center housing can result in oil coking.
To minimize the effects of heat soak-back, water-cooled center housings were introduced. These use coolant from the engine to act as a heat sink after engine shutdown, preventing the oil from coking. The water lines utilize a thermal siphon effect to reduce the peak heat soak-back temperature after key-off. The layout of the pipes should minimize peaks and troughs with the (cool) water inlet on the low side. To help this along, it is advantageous to tilt the turbocharger about 25° about the axis of shaft rotation.
Many Garrett turbos are water-cooled for enhanced durability."



Hope this helps and good luck changing the "hose from hell" and "hose from hell on earth"!