So i just thought of a question, how long do you guys usually let your turbo cool off till?? or what is the specific amount of time before you should turn it off after a lil nice drive? I'm usually waiting for like 2-3 min. before I turn it off?? is this ideal or no?
How long do you usually wait to turn car off??
- Thread starter HmG_mS3
- Start date
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- 2008.5 MS3
2-3 minutes is overkill, 30secs to a minute is fine.
shcernsise
Member
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- 2007 CX7 GT
Manual says 30 secs. I use my own theory. I have a boost gauge installed on my 7. Usually when I am driving to a place and pulling into places to park, such as my driveway, I am using no boost as per my gauge and I shut off my car right away. I figure the idle time as I'm coasting down the road to my driveway, or easing into parking spaces is about 30 seconds of no boost. If I was hammering on the car and was in boost for a long time, I would def not shut off the car right away, but because I can physically tell I am not in boost as well as coasting into parking spots or into my driveway (little throttle use), that time is typically enough for the turbo to cool down.
Not sure if Im doing any harm, but since I am not in boost for at least 30 seconds while performing those maneuvers, in theory I should be fine.
Not sure if Im doing any harm, but since I am not in boost for at least 30 seconds while performing those maneuvers, in theory I should be fine.
i stay in monroe/winder area!!
MikeHTally
Member
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- 2008.5 Speed3, 2006 Chrysler 300C, 2003 Ram 1500
If I've leaned on mine, I give it a minute or so. The last three minutes of my commute are at residential speed, so it gets some advance cool-down. I've been known to set two fans on the motor, one blowing down around the intake and one blowing up near the PS tank. Can't figure out why this aluminum motor holds heat so long. My Ram with its big ol' cast iron V8 cools off faster.
I usually wait to turn the engine off until the vehicle comes to a complete stop.
Seriously, ever since turbos were refined and now have both oil lines and water cooling lines with separate water jackets, devices like turbo timers are obsolete. Your stock coolant system continues an automatic thermal syphoning action to work water through the turbo center housing long after shut down.
Also to avoid "coking" of the center shaft journals it is usually better to run full synthetic oil, since it has a much higher ability to withstand high heat. Regular oils can break down and leave these "coke" deposits reducing oil clearances in the journals and journal bearings.
The only time I let a modern turbocharged car (this is my fourth following two Saabs and a Volvo) is after very extended high engine load operations. Probably not even necessary then unless you've been driving at sustained speeds up in the triple digits. Then maybe let the engine idle 30 seconds or so.
This is really not an issue unless you have driven the engine extremely hard for a prolonged time.
Seriously, ever since turbos were refined and now have both oil lines and water cooling lines with separate water jackets, devices like turbo timers are obsolete. Your stock coolant system continues an automatic thermal syphoning action to work water through the turbo center housing long after shut down.
Also to avoid "coking" of the center shaft journals it is usually better to run full synthetic oil, since it has a much higher ability to withstand high heat. Regular oils can break down and leave these "coke" deposits reducing oil clearances in the journals and journal bearings.
The only time I let a modern turbocharged car (this is my fourth following two Saabs and a Volvo) is after very extended high engine load operations. Probably not even necessary then unless you've been driving at sustained speeds up in the triple digits. Then maybe let the engine idle 30 seconds or so.
This is really not an issue unless you have driven the engine extremely hard for a prolonged time.
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- 06 LS MS6
07 BM GT (shell has been struck from the roll)
so true
the underhood heat is incredible
all this work we do with the intercooler.......... touch one of the intake runners, haha I dare you
speed3 britz
Member
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- 07 Mazdaspeed3, 93 B2600i 4x4
My tt is set at 40 secs, and thats after a 40 cruise home on the expressway from work
My 2008 Mazdaspeed 3 Owner's manual states this:
Since most of my driving is daily driving to work, I just turn it off.
On my old turbo car, I had a Blitz Turbo Timer that automatically calculated the cool down time based on how much boost you were running and for how long you were boosting.
Since most of my driving is daily driving to work, I just turn it off.
On my old turbo car, I had a Blitz Turbo Timer that automatically calculated the cool down time based on how much boost you were running and for how long you were boosting.
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speed3 britz
Member
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- 07 Mazdaspeed3, 93 B2600i 4x4
I dont mean to get off track... but for the record, I love your NSX "Hapa88" that is one gorgeous car (cheers)
