TurboTimer

[eunosracr]

Is anyone considering a turbo timer on their 1 series? Is it even necessary? I ask because I have had them on all my boosted cars.

[atr_hugo]

The N54 uses an electric water pump - which I believe BMW utilizes to continue coolant circulation after shutdown if needed. One of the folks owning a 335i might be able to chime in.

[eunosracr]

Good to know. Anybody?

Originally Posted by atr_hugo

The N54 uses an electric water pump - which I believe BMW utilizes to continue coolant circulation after shutdown if needed. One of the folks owning a 335i might be able to chime in.

[fishbulb]

nope. I choose not to drive at 100% and then shut it off. YMMV....

[IvtecEM]

Just bought one , an apexi unit very small like a pen, I'll be able to hid it very well in 135 with out anybody seeing it. Plus I dont have 5-10 minutes to wait in the car after a good 140mph show in the freeway......

[kurichan]

I'm leasing mine.

I'd NEVER buy a turbo charged car.

So who cares about turbo timers?

[Bobbie Love]

Originally Posted by eunosracr

Is anyone considering a turbo timer on their 1 series? Is it even necessary? I ask because I have had them on all my boosted cars.

not needed, even if you are driving it like you stole it. you should leave 3-5 mins of "normal" driving to cool everything down.

i think you had them on all your other cars, because you were just folllowing the crowd. Turbo timers are not needed unless you are actually racing, and those who like to abuse their car. not needed for everyday driving.

[eunosracr]

I have always driven my cars pretty hard. I used to hate having to wait 3-5 minutes to cool down after a spirited drive. Even after a few minutes of normal driving those hair dryers would still be quite warm. Thats why I bought my T-Timers.

[BForbes]

I'll pass on this one. I need to put cash in the direction of a Valentine One.

[Madjack]

Depends on the car. I did not have any problems with my STi and I did not buy a turbo timer. When I auto-x'd it, I just let it idle for a bit with the hood open. On normal, street driving, the time it took me to park seemed long enough to get the temps under control.

Also, it is not the coolant that you need to be concerned about, it is the oil that is circulating through the turbo to keep it lubed that needs to cool down so it won't cake up inside the turbo.

[eunosracr]

Originally Posted by Madjack

Depends on the car. I did not have any problems with my STi and I did not buy a turbo timer. When I auto-x'd it, I just let it idle for a bit with the hood open. On normal, street driving, the time it took me to park seemed long enough to get the temps under control.

Also, it is not the coolant that you need to be concerned about, it is the oil that is circulating through the turbo to keep it lubed that needs to cool down so it won't cake up inside the turbo.

That is correct. The oil is the life blood of a turbo. Unless its water cooled of course.

[RXC135i]

The turbine and the compressor can rotate at speeds of up to 200,000 rpm.
The exhaust inlet temperature can reach a maximum of 1050°C. Because of these high
temperatures, the N54 engine's turbochargers are not only connected with the engine-oil
system but also integrated in the engine-coolant circuit.
It is possible in conjunction with the N54 engine's electric coolant pump even after the
engine has been switched off to dissipate the residual heat from the turbochargers and
thus prevent the lube oil in the bearing housing from overheating.
:roundel:

[tack]

Originally Posted by kurichan

I'm leasing mine.

I'd NEVER buy a turbo charged car.

So who cares about turbo timers?

this is the wisest statement i have seen in this forum.

[Slimjim8201]

Originally Posted by eunosracr

Is anyone considering a turbo timer on their 1 series? Is it even necessary? I ask because I have had them on all my boosted cars.

This is such a 16 year old question. If you are remotely familiar with turbo cars then you know a turbo timer isn't necessary. Who flogs their car at 10/10ths and then shuts it down immediately?

[1er Trojan]

so much hatred.

[Templedogg]

Since they are two smaller turbos it should not matter. It matters more with really large single turbos of days past. I had an old 944 Turbo that required it, but again only after you were really on it a lot. Normal city driving was fine without idle time.

[kaleb]

The real answer to this question, as it was already answered... is that the N54 engine has an electric water pump that will operate when the engine is off, flowing coolant through the turbos when needed. The engine management system will monitor temperature and run the pump if the turbos need cool down. Because of this feature... you do not need a turbo timer to keep the engine running (and oil flowing around the turbo bearing to prevent coking)

Lock the thread.

[Ryephile]

The R56 MINI Cooper S has a 2nd smaller auxiliary water pump that circulates coolant through the turbo after engine shutdown. It's basically a factory turbo-timer. That said, modern turbo's with both water cooling and oil lubrication are MUCH less susceptible to coking than old-school turbo's with oil only.

--->Kaleb; do you have a doc or link to the water pump operating after key-off?

[atr_hugo]

Ryephile - welcome!! See this thread for info on the water pump: http://www.1addicts.com/forums/showthread.php?t=901
It's around Page 10 of the document that Harold has posted.

What year is your Miata, BTW?

[Ryephile]

Hi there atr hugo! I have a '95 Laguna Blue w/torsen; it's a TON of fun and definitely defines perfect chassis balance.

Thanks for the link. I see that the coolant pump is electric. That certainly gives the engineers the flexibility to run the pump after key-off.

[Euro Durch Tod]

the are only needed if you running your car all out right into the driveway, if you drive 5-10 min minimum, normally home you wont have a problem.