Bison1379134007 Posted December 13, 2002 Report Share Posted December 13, 2002 So yeah, how does it work? i mean exactly... and with the whole water pump on shut down etc etc... like what does the water get pumped through? A sleeve in the trubo housing? Anyone got the facts...ship em in Link to comment Share on other sites More sharing options...
Paul Posted December 14, 2002 Report Share Posted December 14, 2002 as i understand it there is a water cooling jacket around the turbo. During normal use, its kept flowing by normal waterpump.. the electric water pump cirulates the coolant after engine shuts down for a pre set time. this helps take the heat away from the turbo, and stops the oil, which is now NOT cirulating, from burning up in the turbo, bearings etc, under the extreme heat the turbo creates. personally, i still let engine tick over abit before shutting down, just to keep oil circulating that little bit longer. im sure someone will correct me if there are any errors. Link to comment Share on other sites More sharing options...
Bison1379134007 Posted December 14, 2002 Author Report Share Posted December 14, 2002 so what exactly does the oil get put though? is the turbo on a sealed bearing unit? the reason i ask is im just trying to understand why a car running with more boost (faster turbo) might use more oil in the cooling process... or if it wouldn't at all. Link to comment Share on other sites More sharing options...
Renn Posted December 15, 2002 Report Share Posted December 15, 2002 The oil flow is determined by a restrictor in the oil inlet port of the turbo. Boost does not affect it. The oil lubricates the shaft bearings. Yes, there are shaft seals. The coolant flows through an outer jacket. Some cars have the after-run pump, most so not. The 2.7T, K04 1.8T, NB and Ibiza are the modern cars that I know have it. With synthetic oil it is not critical. A car running more boost can use more oil through the breather system. Renn Link to comment Share on other sites More sharing options...
Bison1379134007 Posted December 16, 2002 Author Report Share Posted December 16, 2002 breather system? Link to comment Share on other sites More sharing options...
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