Does the 335i need to be Idled

[Dmonic1]

For a few minutes before shutting down the engine after hard driving?

 

[freerider]

I would do it just as a precaution, turbos get immensely hot when driving under boost, the logical thing to do would be to let them cool to at least normal operating temp before simply shutting off. In my mind, I just see the big red "heat fatigued metal" light flashing

 

[Scouse]

Im still old school so i always do it

A good thing to do is drive nice and slow and normal a few minutes before arriving at your destination, this also allows the turbo's to cool off some :thumbsup:

 

[Dmonic1]

Thanks Gents - thats exactly what i do... also a bit old school! ;-)

 

[Jandre]

I let my gti idle after a good run. Don't have money for a new turbo

 

[Veedub]

The idling is more so to get the blades to slow down cause on boost they spin at like a million rpm (exagerating) and once u switch the car off it cuts the oil circulation to them...so the blades are spinning and there's no oil...some of the newer cars have an electric pump that still sends oil to the turbo even after u switched the car off...

We at least that's what I read on Google??

 

[Leon328]

Howzit

Some turbot’s spin in excess of 40 000rpm so they need to slow down after a spool up. The big thing is that there is no oil flow to the turbo after the motor stops (oil pump switches off) so you have a shed load of friction after wards. Sometimes the new generation ceramic bearing turboss take up to 3 minutes to slow down and like Freerider said heat souk on metal bearings is a bitch.

Idle times should be at least a minute // up to 3 minutes after some hill climbing or hot-rodding

---

Ish spelling -- Ish timing

 

[Dmonic1]

Does the N54 motors have an electric oil pump?

 

[Twinz]

Im still old school so i always do it

I agree with everyone so far, including Freerider....:thumbsup: I do the same ritual at cold-start-up as well especially if you have an exhaust modification....:thumbsup:

 

[Venom]

Do it, the effects of not doing it will far outweigh the effort of taking the time to do it.

 

[Matt Q]

My advice on a 335 would be to drive your hardest JUST before you get home... then rev REALLY high when it is parked and IMMEDIATELY take the key out of the ignition and walk away.. ignore the weird burning tin smell... it's all good

 

[zaleonardz]

Not in the same class as the 335, but I have owned 4 turbo cars, and have been driving turbo'd vehicles for at least the last 6 years

I agree mostly with Leon about the oil cooling down, what I do is thrash the crap out of it, and when I get off the highway close to home, its driving miss dasy all the way keeping under boost level.

Further, its not just your turbo you need to consider, its brakes as well, if you ride your brakes hard, and you stop with glowing red discs, they are going to crack.

Last 3 blocks from home, keep it below 2,000 RPM, and maybe drive around the block once or twice its its really been a hard trip, to date I have not lost a turbo yet

My old lady (the 540) I treat the same, decent warm up time (which is usually like 2 blocks) and let her cool down before shutting off.

Thus, If you follow this procedure, I dont think you need to let her idle, but thats just my view

LZ

 

[Rennzport]

:thumbsup:

 

[Twinz]

Yebo LZ...my procedure is same: warm up at start up untill rev needle settles. Cool down at shut down...weather also plays a role how long both procedures take.

 

[Mike1]

Matt!

If it wasnt for that smiley I would have smacked you! You just described the perfect way to kill a turbo. :spit:

 

[Matt Q]

I know... but we are talking 335's and you know how I feel about them.. har har

You coming tomorrow night with a video camera?

 

[Mike1]

Uhhmm.. Whats happening tomorrow night?

 

[Hellas]

ladyz&druks

 

[Mike1]

Oh.... Uhhhmmm...... I dont think so.

 

[Lazlo]

I idle mine just to be safe. Cant do any harm. My little snails also do a lot of boosting :mmm: