waterlines on a top mount?

[TheSparo]

woudl it be necessary to get watercooling on a hybrid turbo, or just something a little more? suggestions?
thanks

[gasser]

for reliability purposes i would suggest it

[TheSparo]

but if you buy a turbo w/o water lines, and one with water lines, assuming the same turbo and all... what would the diff be? i don't think longevity would be too much of an issue seeing as how it will just keep it cooler...

[gasser]

cooler turbo = longer seal life

[DoriftoSlut]

I'm running a dry turbo, aka oil only. T3/T04e. Oil temps get pretty hot, i want an oil cooler real bad. But i also like the Coolant temps staying lower. Its all relative i mean the cooling system is designed to cool the oil as well as it moves through the block. So a hotter cooling system (water lines on turbo) will cool the oil less effectively and thus it would still get hot. A cooler system (aka no water lines on turbo) will cool more effectively, but the oil will get a little bit hotter (especially with a big turbine). Either way, its the same thing. If you have a turbine without coolant lines, don't worry it was designed that way, just run the oil lines. If its like a stock turbo and has the coolant lines, run those. If you have yet to get one.... because of cost for fittings and stainless lines, just get a "dry section" turbo aka only oil.

[TheSparo]

thats what i thought.. kinda make me think of some calculus concepts like x^8 +7x and the water lines are the 7x how it's pretty much pointless (limits apply as well) a little cal lesson for those of you who are reading haha
thanks man
-Jeff

[Kreator]

http://www.airpowersystems.com.au/wrx/aps_turbo.htm

i'll summarize it for ya: "Non water cooled turbochargers have no place in a high performance gasoline engine application and should be avoided at all costs."

as for coolant system getting hot... not a problem with a proper radiator. Mine (not a 240) don't go above 200 unless i'm stuck going in 2nd gear.

[TheSparo]

i dunno about that info.. seems a little too biased for me... their main argument about the watercooling part is after you shut off the engine... which is what a turbo timer is for... if non watercooled turbos were "to be obsolete in todays technology" then why are the bigger turbos not ball bearing or watercooled? ex. t88 t78 greddy/hks/GARRETT/Arms turbos... they are just trying to get people to buy their turbos...
of course all of this is IMO

[Kreator]

umm you are obviously reading it wrong. look at the diagram. even before the engine shutdown, the the non-water cooled turbochargers temperature is above the cocking threshhold. cocking - bad. watercooling just like ball-bearing adds lifetime to the turbo. except it has a much bigger effect on long livity at a very little price... that is obviously if you do your research before you buy the turbo.

there is a reason every factory made car comes with a water cooled turbo. companies just sell turbos - if they sell you a turbo that will last 100 years, you will not buy another one right? So whats their purpose of making a longer living turbo for free? They dont tell you to put a restricter on the turbo either, do they?