ENVY-T CNUTOX Donating Members 3,098 Member For: 22y 15d Gender: Male Location: Not sure? Posted 11/08/04 11:01 PM Share Posted 11/08/04 11:01 PM The only time I bother to cool down the turbo is when I pull into a servo etc on a freeway where I've gone from 110 to stop. Other than that I don't bother. Driving around the city at 60 doesn't matter as you are rarely on boostIn actual fact you don't realy need to cool them down after a fwy run, cos the car runs alot cooler with all that fresh air passing through it. Driving in the city, whether it is at 40,60,70 k's will actually make the car hotter cos there is always someone in front stiffling (sp?) your air supply. And the turbos are not water cooled, they are oil cooled, meaning that when you turn her off after a spirited run the oil left in the turbo will start to glaze the insides of your housing causing premature wear. A turbo timer is not needed if you can be bothered sitting in your car for upto 30secs after the drive. If you have been giving it WOT for some time then a couple of minutes is advisable.Turbo timers are deemed a necessity only by those who sell the bloody things!And yes I currently drive a turbocharged car with out one fitted and have done so for the last 5 years, and the turbo is fine.( can't say the same for the diff though ) Link to comment Share on other sites More sharing options...
Turbo6man Lifetime Members 4,084 Member For: 22y 3m 11d Gender: Male Location: South Coast NSW Posted 12/08/04 12:17 AM Share Posted 12/08/04 12:17 AM xssiv> The turbos ARE water cooled. This argument has been had before so I'm not going into it again. Just check your turbo - the oil and water lines are clearly visible to anyone with two functioning eyes You are correct with the hwy driving comment. It is not the speed of the vehicle alone that determines heat build up - more to the point it is throttle position/engine load that causes the turbo to produce heat. Link to comment Share on other sites More sharing options...
ZAP No boost, no bottle, just my foot on the throttle! Lifetime Members 7,935 Member For: 20y 11m 7d Gender: Male Location: Sydney Posted 12/08/04 12:56 AM Share Posted 12/08/04 12:56 AM Turbo6man is right, they are also water cooled.I have owned turbo cars for over 14 years and have never had a turbo timer fitted, and removed one from a 2nd had car I had. They are a waste of money as all you do is just camly drive to your destination for the last couple of minutes. Also turbo timers have more to do with stopping the turbine spinning than cooling the turbo down. If you are booting it under full boost and then turn the motor off, the turbo will continue to spin for some time. As the engine is off, no oil is being circulated and this is what stuffs turbos. This is what turbo timers are designed to prevent, not to cool your turbo down, although I guess it could do that as well.Just remember that if you are booting it, slow down or let the car idle for a minute before you switch her off Link to comment Share on other sites More sharing options...
mattpwc Member 51 Member For: 20y 7m 15d Location: New Zealand Posted 12/08/04 01:05 AM Share Posted 12/08/04 01:05 AM Link to comment Share on other sites More sharing options...
ENVY-T CNUTOX Donating Members 3,098 Member For: 22y 15d Gender: Male Location: Not sure? Posted 12/08/04 01:32 AM Share Posted 12/08/04 01:32 AM I don't want any battles here, but I have been led to believe that they were oil cooled. But if you say so, well you say so.That is all I do with my current car, give it WOT and then calmly drive to my destination. The timers may also negate the smartlock system, which is what would happen with my current car if I decided to waste 200 odd bucks on one. Link to comment Share on other sites More sharing options...
mickq Member 740 Member For: 21y 8m 30d Posted 12/08/04 01:41 PM Share Posted 12/08/04 01:41 PM I don't want any battles here, but I have been led to believe that they were oil cooled. But if you say so, well you say so.That is all I do with my current car, give it WOT and then calmly drive to my destination. The timers may also negate the smartlock system, which is what would happen with my current car if I decided to waste 200 odd bucks on one. I am still not convinced they are water cooled either.Two reasons:1) Water cooling in these turbos is not a good idea when it doesnt take long before the turbo is red hot. You can make them red hot in 20 seconds by going for a hoon and then you can open your bonnet at night and have a look. Water simply can not cope at those temps, and would quickly turn to steam in a millisecond. (Flash boil). Garrett turbos are now made to function with 1050 degree exhaust temps. Anything over about 150 degrees and your engine coolant is history!2) Research on the net including the garrett site states that they are engine oil cooled and lubricated. This includes both the T35 and the T40.If someone has conclusive proof that they use water cooling, Id be most interested to hear it. And saying it has hoses sticking out of it isnt enough: they could also be for lubrication or cooling via engine oil. Its easily possible for separate cooling and lubrication paths to exist, and for both to carry oil.Happy to have someone post proof indicating otherwise, but I am stuffed if I can find hard evidence. Link to comment Share on other sites More sharing options...
xlr8ed Phantom lives Member 1,417 Member For: 20y 8m 30d Gender: Male Location: who knows Posted 12/08/04 03:52 PM Share Posted 12/08/04 03:52 PM well all I can say is that when I unbolted the top steel hose on the turbo lots of water came out.. I had the turbo off when I done the actuator valve mod...jeff Link to comment Share on other sites More sharing options...
Turbo6man Lifetime Members 4,084 Member For: 22y 3m 11d Gender: Male Location: South Coast NSW Posted 13/08/04 12:05 AM Share Posted 13/08/04 12:05 AM And saying it has hoses sticking out of it isnt enough: they could also be for lubrication or cooling via engine oil. Its easily possible for separate cooling and lubrication paths to exist, and for both to carry oil. Yeah, but how do you keep the water and oil from mixing when two of those lines are connected to the engine cooling system and the other two are connected to the lubrication system? Link to comment Share on other sites More sharing options...
Trumpy What's happening? Lifetime Members 1,605 Member For: 22y 1m 17d Gender: Male Location: Steel City, NSW Posted 13/08/04 12:35 AM Share Posted 13/08/04 12:35 AM Yeah, but how do you keep the water and oil from mixing when two of those lines are connected to the engine cooling system and the other two are connected to the lubrication system? Link to comment Share on other sites More sharing options...
XR6ISM ASHA - Anti Stooge Hunter Association Member 535 Member For: 21y 7m 9d Location: Sydney Bronx :) Posted 13/08/04 03:58 AM Share Posted 13/08/04 03:58 AM Personally, I run a TT in my T. Its set to 30 seconds but if I give it a boot full on before I turn it off I will raise it. I think its a good idea to let the turbo spin "down" and the oil to circulate for a while before turning it off. Link to comment Share on other sites More sharing options...
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