Turbo cooling after shut off??

[Klip]

I was wondering if the MS6 turbos have an after shut off cooling mechanism? (i.e. an oil pump to continue circulating the oil after shutdown for a certain period of time)

I usually let my engine idle for about a minute after spirited driving, but this seems a bit unnecessary if there is a mechanism as suggested above.

Thanks in advance,
Klip

 

[Klip]

bump

 

[Alejo_NIN]

i dont think there is such thing
i do know those turbos are watercooled and there isn't muchneed to let the enigne idle unless very aggressive driving, and even so...for you to shut off your engine after racing somene is hard, unless you go into your driveway at 100mph...

get a turbo timer, besides looking good, it also keeps your engine running for a set of time and some even have voltemeters and other gadgets...and for the price...is worth it

 

[StephanieT]

There is no need to let the turbo "cool off" after driving. The only time it might be necessary is if the car is shut off while under boost.
Stephanie

 

[ademan]

There is no need to let the turbo "cool off" after driving. The only time it might be necessary is if the car is shut off while under boost.
Stephanie

Not the only time,the factory still suggest to let the car cool down for at least 60 sec after aggressive driving/rapid accelleration/boosting etc. This is a good idea,though the water cooling help but you still need to let the car idle for 1min or more or invest in a turbo timer.all factory turbocharged car recomend this.I have own over 10 factory turbo mazda car

 

[dannyboy17]

thats why u get a turbo timer, that way u dont have to worry about damaging ur turbo. Mine stays on for an extra 30 seconds everytime I take the key out.

Theres some turbo timers that calculate how long u were driving, and according to that it stays on longer afterwards...mine aint that fancy tho.

 

[ademan]

thats why u get a turbo timer, that way u dont have to worry about damaging ur turbo. Mine stays on for an extra 30 seconds everytime I take the key out.

Theres some turbo timers that calculate how long u were driving, and according to that it stays on longer afterwards...mine aint that fancy tho.

you are right,turbo timer can be had for less than $40 now. but people overlook the simple stuff and end up paying a hefty price.

 

[03MSP]

It is always good to let the car sit for a short while before shutting the engine off, but with water cooled turbos there is a coolant siphon effect that goes on after you kill the engine, maybe that is what you were thinking of.

Taken from Garrett's website:

To minimize the effects of heat soak-back, water-cooled center housings were introduced. These use coolant from the engine to act as a heat sink after engine shutdown, preventing the oil from coking. The water lines utilize a thermal siphon effect to reduce the peak heat soak-back temperature after key-off. The layout of the pipes should minimize peaks and troughs with the 'cool' water inlet on the low side.

 

[Brian MP5T]

There is no need to let the turbo "cool off" after driving. The only time it might be necessary is if the car is shut off while under boost.
Stephanie

I Feel that I should point out that your statement is misleading..


There is infact no "Need" to let the turbo spool down, but I highly recomend it.

The time that the turbo will need to finally be replaced, will probably be just as the car is off waranty if you don't treat the double snail with a bit more respect than that.

It's not the fact that it's liquid cooled that cures all, it just helps. The turbo spools up to over 100,000 Rpm and is supported by bearings that are lubricated by the engine oil. As soon as you kill the motor, you kill the oil that the turbo needs to prevent massive damage to the bearing.

So, what you read in the book is fine, however the reality is that the damage will not be visible until it's too late and you are paying for it.

If you take the time to wash and wax the car, take the time to let the power gods rest a bit before removing the oil.

30 Seconds is perfect, it also has a nice way of leveling the temperature of the block just before the heat spikes as the engine is shut off.

Do not wait those 30 seconds with the A/C on if possible, it will make it worse.

 

[StephanieT]

A 30 second cool down will not hurt anything- agreed. However, unless you just turned the car off immediately after running max rpm and max boost, it is not necessary. Over a long period of time - not letting the turbo cool after a race or 1/4 mile will char the oil due to heat. Over time the char deposits build up and clog the bearings. Turbo Timers are a wonderful advertising tool, but not needed for everyday street use.
Stephanie

 

[Brian MP5T]

^^ Weed is cheap where you live isn't it..

 

[Speed6 Guy]

Spending money on a tool that will save your turbo (smart) saying that there is no need to do anything (not smart). A turbo timer is the best thing to happen to your turbo. The turbo is the least protected part of your car. For STREET use I would let the car idol for 1 minute at least but that is just me.

 

[StephanieT]

^^ Weed is cheap where you live isn't it..

(sssh)

Just passing along some words of wisdom from Corky Bell. His last turbo lasted 14 years, and he did write the book......
Stephanie

 

[Brian MP5T]

Ummm, If you read Max Boost again, you will see that he clearly said the you do not need a turbo timer...

However, he did say that you need to wait if you don't have one... So GET A TT..

 

[StephanieT]

I invite you to call Corky and have a conversation with him. 830.438.2890.
Stephanie

 

[Killer]

^^ Weed is cheap where you live isn't it..

Must be. "Char the bearings??!!??" (rofl)

 

[Brian MP5T]

I invite you to call Corky and have a conversation with him. 830.438.2890.
Stephanie

I called, it was a ******* Taco Bell... (poke)

 

[Klip]

(peep) Just so all are aware, my question has been answered and I am satisfied........

 

[lasermp5]

Correct me if I'm wrong Brian, but haven't you read maximum boost cover to cover prob 10 times? lol

 

[Brian MP5T]

Correct me if I'm wrong Brian, but haven't you read maximum boost cover to cover prob 10 times? lol

Do you see it in this shot..

Between the Passenger seat and the center console?