Alex Posted November 29, 2005 Share Posted November 29, 2005 1.4bar should be fine....I'd guess it was something else - what oil did you use? And how long for - do you use a turbo timer or give the car a long time to cool after a hard run? Link to comment Share on other sites More sharing options...
Ian C Posted November 29, 2005 Share Posted November 29, 2005 Yes I do.. Both precision turbos... Im having the oil line checked out and trying to decide what to do next.. Im thinking that it was exessive heat and thats why im going the oil and water cooled route.. Also I was using it at 1.4 bar daily basis which might have been a bit too much ? Shouldn't have been mate, although I run 1.2bar as the daily drive, 1.4 is where it is at it's most efficient (I'm on wastegate 0.9bar at the mo, darned winter ) What's your shutdown routine like, how often do you change the oil and filter, what's it look like when it comes out, and let us know if you find anything manking up the oilways Do you know the oil temps you run? How many miles have you done on that turbo and how long are you on boost for? Not criticising your car ownership and maintenance at all, just trying to work out why yours ended up like a -Ian PS Feel a bit guilty about hijacking your thread for a techie discussion but I'm sure it won't hurt the sale and it keeps it at the top Link to comment Share on other sites More sharing options...
TRD3000GT Posted November 29, 2005 Author Share Posted November 29, 2005 Oil changed every 1500-2000 miles.. With Valvolene 5-50 I think.. Cant remember off the top of my head.. Anyway.. I always used to let everything cool down for a long time before I shut her down.. Cruise for the last 2-3 miles and then let her run on idle for a minute. Im not sure at all why this would have happened but hey.. Its all in the game we play. Im getting a 71 GTS with oil and water cooling also fitting my massive oil cooler when I get the new turbo on. Im not going to take any risks.. BUT I do know that my oil was never stupidly hot. by my oil temprature gauge.. Link to comment Share on other sites More sharing options...
Guest Terry S Posted November 30, 2005 Share Posted November 30, 2005 It does seem weird. Make sure the new turbo is primed properly when installed. Water jackets are good, but they will put additional load on you water cooling system too. Link to comment Share on other sites More sharing options...
TRD3000GT Posted November 30, 2005 Author Share Posted November 30, 2005 Thanks for the reply Terry.. Im back around Christmas time.. Do you think you might be able to help me fit it ? Link to comment Share on other sites More sharing options...
fastisnice Posted December 1, 2005 Share Posted December 1, 2005 I think its just a random think 1 in 1000 turbos could be factory faulty, the last thing would be wrong on chris's car would be the oil!.I Link to comment Share on other sites More sharing options...
Guest Terry S Posted December 1, 2005 Share Posted December 1, 2005 Thanks for the reply Terry.. Im back around Christmas time.. Do you think you might be able to help me fit it ? for my sins I have to work all Christmas this year Link to comment Share on other sites More sharing options...
TRD3000GT Posted December 1, 2005 Author Share Posted December 1, 2005 for my sins I have to work all Christmas this year Advice wise then.. I have bought a new turbo that is oil and water cooled.. I will need the following.. Water feed and return lines ... Possibly a -3 oil restrictor ... ? or do all the BL kits use -3 oil lines anyway ?> Thanks Link to comment Share on other sites More sharing options...
Guest Terry S Posted December 2, 2005 Share Posted December 2, 2005 the oil line is -3 in the standard kit Chris. Link to comment Share on other sites More sharing options...
Ian C Posted December 2, 2005 Share Posted December 2, 2005 Isn't there something about a restrictor in the oil feed line for a DBB turbo cartridge though? And I would have thought that whether a turbo was only oil cooled or both water and oil cooled is irrelevant to the overall cooling system of the engine, as it has to take the heat out of the oil and the water anyway... If you don't have a water jacket on the turbo then the oil carries the heat away and thet gets cooled by the coolant system anyway. -Ian Link to comment Share on other sites More sharing options...
Guest Terry S Posted December 2, 2005 Share Posted December 2, 2005 Isn't there something about a restrictor in the oil feed line for a DBB turbo cartridge though? And I would have thought that whether a turbo was only oil cooled or both water and oil cooled is irrelevant to the overall cooling system of the engine, as it has to take the heat out of the oil and the water anyway... If you don't have a water jacket on the turbo then the oil carries the heat away and thet gets cooled by the coolant system anyway. -Ian yes but I don't know on the specific turbo Chris is getting. On the oil cooling its easy to add an oil cooler. Link to comment Share on other sites More sharing options...
Jake Posted December 2, 2005 Share Posted December 2, 2005 Isn't the small amount of oil going through the turbo too small to provide any meaningful cooling? I presumed the oil supply was for lubrication only, rather than for cooling, no? Link to comment Share on other sites More sharing options...
eyefi Posted December 2, 2005 Share Posted December 2, 2005 on a normal bearing turbo there is quite alot of oil flow through the turbo but on the dbb cartriges there is very little oil flow through the bearing, not enough to offer any massive amounts of cooling, it's pretty much only there for lubrication. the dbb carts don't have oil seals like the normal bearings so oil pressure in the bearing is unwanted and a point of failure on units run without the oil restrictor. the oil restrictor is like a large pin hole. Link to comment Share on other sites More sharing options...
TRD3000GT Posted December 2, 2005 Author Share Posted December 2, 2005 Terry, Im not home right now so cant measure my old turbo Could you tell me what sixe the elbow that connects to the intercooler is ? Ive been told its either 2 1/2 inches or 3 inches.. Im pretty sure its a 3 inch...? Link to comment Share on other sites More sharing options...
Ian C Posted December 2, 2005 Share Posted December 2, 2005 Isn't the small amount of oil going through the turbo too small to provide any meaningful cooling? I presumed the oil supply was for lubrication only, rather than for cooling, no? It's vital on a non-DBB non-water jacketed turbo mate, they ain't air-cooled -Ian Link to comment Share on other sites More sharing options...
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