Hey folks,
I have a question for you all. After driving my Supercharged Golf which I baby and look after so much, I like to idle the car before I shut it off, especially after a long hard run. This is to ensure that the hot oil drains out of the Supercharger, and gets a few seconds of cooling down. Basically, Im doing the same job as a turbo timer.
In your opinion, is this necessary in the S2000? I know its a naturally aspirated motor, but surely there is some benefit in letting the car take a "breather" so to speak, before turning it off. What do you all think?
Asif

 

Most modern day factory turbo cars have BOTH oil and water cooling. A cool down period of 2-5 min. @ low rpm might be warranted if you've just made the engine work hard. It is after this type of driving that heat builds up in the engine (and turbo) that needs to be removed by the water and oil through their respective coolers. With all my cars (including the S2000), I would NOT shut the engine off after a hard run. I think the water needs to circulate to remove the engine's heat. If you shut it off at this point, the heat has no place to go but to remain in the water jacket surrounding the engine. I once had a car in which I passed a bunch of other cars going uphill. At the top of the hill, I realized that I wanted to pull over at a point of interest. I did so, turned off the engine and immediately it boiled over.
Of couse, our aluminum engines have a better ability to release its heat.

 

Great! Thanks for the articulate reply. My thoughts have just been confirmed.
Asif

 

I have an auto-timer installed in my car, many tuned cars in Japan follow the same trend as well whether running either a NA or TA setup. It's just much better for the engine and definitely for everything to settle to a smooth idle before it switched off and most stuff goes to sleep.

 

i wish i knew that after i autocrossed...