gussgoose
old 4G93T.net Member
I've noticed a few owners running their turbos without water cooling I'm in the process of plumbing the water lines up but also heard it doesn't hurt running without them?
Is it safe to run the td05 without running water lines?
- Thread starter gussgoose
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evo-gsr
Well-Known Member
^ +1 to that one
brisvr4
Member
evopwr said:
Yes there was. Lazy owners that flogged the car then shut down without letting the turbo cool down. As long as you give the turbo time to cool down before you shut it off you can toss the water lines without any ill effects.
Dean
Member
Wouldnt it be more trouble to block the lines off?
Just keep them.
Why do you want to not run them?
Just keep them.
Why do you want to not run them?
gussgoose
old 4G93T.net Member
Oh its just what I've heard that their not really needed, off to buy some piping!
Exactly, you could track your car without them and it won't make any difference to the life of the turbo. As mentioned above, they were developed for production cars as owners would flog them and switch the engine straight off.
Mine are not hooked up.
Mine are not hooked up.
jimmyg
Well-Known Member
You dont need them true. However if i had just spen big money on a new turbo and it had a water jacket i'd sure as hell be using it. Cooler turbo cores will never hurt a turbo. The same cant be said for the other end of the scale.
Run water if the turbo can run it.
Run water if the turbo can run it.
If its a problem coz you don't have the lines or broke them like i did, its easy to make one up using the old line, cut it off leaving about an inch at the ends and slip some piping over and clamp it on, get it the end flared if its not a tight fit.
I got that blue coated heat resistant piping so tight i needed vaso on the line to get it on.
I got that blue coated heat resistant piping so tight i needed vaso on the line to get it on.
jimmyg said:
I couldn't agree more.
The REASON that water cooling was added to turbos was to prevent OIL COKING (carbonising i.e. char residues) and oil blockage to the turbo bearings. The main factor was people not changing their oil, using crap oil (and vehicle shut-off).
The point being that COKING stuffs turbos whenever the bearings reach coking temperature (about 200 degrees) AND there is stagnant oil flow (most likely at shut-off). Turbo oil will see 250 easily with extended boost. High oil temp with low flow rates (at idle) will still encourage coking to an extent. This will build over time.
Sure, race turbos don't use them because they don't need to last as long between rebuilds. If you think 50K is a good life for a turbo, then don't use water lines.
Alot also depends on oil quality and change interval. Shit oil has a lower coking temperature.
So, your turbo WILL live longer if its water-cooled - it does matter.
Provided the water lines are connected into the engine so the hotter water (Turbo out) is returned physically above the cooler water (Turbo in) then you get the thermo syphon effect after turning off the engine ie. the water will continue to flow through the turbo thus reducing/eliminating the need for a turbo timer.
