I told my friend that he should not rev his turbo car when it has been sitting in storage for 2 months and he just revved up the engine when he cold started to reshuffle his cars in his garage. In general, it is not good to rev engine when it is not totally warm up, correct? And more damaging for a turbo? Sorry if this is a stupid question. If you don't ask stupid question, you are definitely going to repeat the same stupid mistake over again over again.

Thanks for reading,

TC

 

not good for any engine

 

+1 not good, oil has a much different viscosity when it is not at working temp. Oil film might break and you lose lubrication.

 

Thanks Chuck and Schwabe! I will try to convenience him with the viscosity explanation.

 

As a newbie, I agree with these answers and can give you another story. I'm a pilot and the general aviation planes that I'm around with turbos REQUIRE the oil temp to be up before even moving out of idle. They also REQUIRE letting the plane sit at idle after landing for approximately 3-5 minutes to let everything settle down before turning it off. Hope this helps

 

Porsche recommends that you start the car and drive right away, don't let it sit and warm up. It will warm up faster driving it. Do NOT build any boost until you are up to temp. When shutting the car down, most, if not ALL engine builders and vendors here, will tell you to let it idle for 2 minutes before you shut it down. Not 1-1/2 minutes, 2 minutes.

 

This is my bible when I start and shut down my car.

 

I drive in colder climate here as well, but I always let the car sit at idle for at least 1 minute and begin driving keeping gear changes under 3000RPM until the car is fully warm. It only takes about 2-3km of easy driving and it's warm. I know any turbo should have a brief cool down and I thought it had something to do with the turbos vanes from having heat warping after a rapid shut down???

 

I also have some questions about cold starting after a 2 week sit...
I like to take it out every 2 weeks or so in the cold if the streets are dry.
Engine turns over once, then pauses, then fires up every time. I let it idle for 2-3 minutes until the revs settle to 1000-1100, then drive gently until engine temp is up, then get more aggressive from there. Is this ok or should i just let it sit till march?

 

If you are running GT style turbos with water cooling at the journals, would it not then be nesisary for the 2 minute cool down.

 

The "cool down" for turbos is to prevent "coking" of the turbos, which is the oil baking on the inside of the turbos which are still very hot, even with the water.

 

I believe Porsche has other things in mind with regard to the recommendation. I think they first and foremost put that information in the owner's manual to satisfy the "Green" movement in Germany...idle warm up believed not to be "green" at all. I think Porsche's other reason was based on protecting the transmission. Although not an entirely safe bet by Porsche, I think they are betting that the chances of an owner starting up and immediately engaging in "hard" driving is pretty low. So by driving off right after a cold start, and taking it easy for awhile after doing so, the transmission will have a chance to warm up before the owner hammers the drive train (and engine). I think some drivers forget about warming up the transmission.

I personally idle warm my engine a bit before driving, and once I start on my way I keep the RMP below ~3000 with no hard pulls until the engine oil and transmission are warmed up.

 

WTF, call me during the week and we'll go and confiscate his car

 

years ago when i had a collection , if a car sat for even two months i pulled the plugs and prelubed the cyclinders. i do rember i left a car for a year or so ,i prelubed stated it and gas leaked everywhere (very scary) anyway no fire but i learned my lession when things are left alone they wear out all by themselves gasket get dry and opps your leakin oh shi. forgot to use caps Again

 

i turn my car on, immediately pull out of my driveway while the car still is in cold start
(idling very loud at 1200 rpm)
i then proceed to drive down 1 block, engage in a controlled powerslide and red line first and 2nd gear while getting onto the expressway

have been doing this for 2 years now

ive never warmed up any of the cars ive ever owned
its all a myth