Turbo timers??? how long?

[Jimbo2000]

YBSLO4

but why does a turbo tick so much faster if you turn the car off straight away than if you let it idle down for a few minutes, surely that means something

[Ronin 09]

Originally posted by YBSLO4

Ya all fooling yaselves... turbo timers where created to allow the oil in teh turbo around the bearings to cool a little before then engine is shtu off to keep it flowing and prevent crud developing as a result of boiling oil. The simple fact that oil nowdays haveboiling points well above what the engine could ever get to make turbo timers a waste of petrol really, they may allow the engine or turbo to cool a little but lets face it over 2 or so minutes whats it gunna really do?? And idle can actually make a car hotter anyway cos no air is flowing over the engine and radiator.

Wrong.

*It is the oil solidifying in the turbo oil galleries that kills the turbo.

*The turbo exhaust housing can reach temps of over 500 degrees celcius. No engine oil will remain stable if kept at this temperature

*2-3 mins is plenty - at 1.5 bar oil pressure and at the flow rates that equates to through the small oil galleries, the exhaust housing has sufficient time to cool

*Idle cannot make the turbo exhaust housing hotter, as the turbo is not under load.

*The 'simple fact' is that if you want to minimize the chance of blowing up your turbo, don't idle down.

I would personally take a couple of minutes idling down and cop the extra fuel cost a year... better than a rebuilt turbo every 6 months

[95SKY]

it says in skyline manual 30 sec just driving round town 1 min highway driving and 2 min if you been driving it hard or its been under load i set mine at 3 min just to be safe.

[(B1) MR_fanny]

mines set at 50sec.....i mean how often do u fang it on the freeway, exit, turn the corner and park straight away?? unless u happen to live around the corner of a freeway:D:D same deal with residential areas, how often do u boost on a main road and continue boostin in smaller roads, not goin over 50k of course:D everytime u go home??

[Jimbo2000]

do you consider the boost gauge (digital) going over zero, boosting?

[MetBlue_GTST]

I couldn't live without my turbo timer... I use it every morning... After i get dressed, i start the car, set the turbo timer for 10mins (9:59 to be exact) then go back inside, put my contact lenses in and stuff like that... By the time i'm ready to go the car is around 50-60degrees...

As for when i stop, i a let the car go for 30secs before turning off... Even after a semi-hard flog, i'm running rotational idle so things cool down very quickly!!!

[EVOIV]

I have an HKS turbo timer and always set it to auto. After a 30minute drive through the freeway, and bumping into a few lights, the turbo timer usually ends around 1min to 1:30min by the time I turn off the ignition. But it depends on where you go. Remember that if you thrash the car around, then get caught at a traffic light for 3 mins, then travel another 500m to your home, you can probably turn the car straight off. Because your car is cooling off when idling at the traffic light for 3mins. But if you want to keep a fixed time, I'd say 1minute should be enough.