Imagine... You drive the s2k from cold and gently warm the engine up till whe water is on normal operating temperature. After a 20' drive, you stop and shut down the engine. After 30' you start the car again and you see that the water temp is still on normal operation temperature. After a few hundred of meters of gentle driving you rev it gently up to 7k in second gear one time and there is no 'cold' rev limiter. Normal, because the water temp is still warm. I guess the oil temp is still warm enough as well. But...

I presume that some part of the engine oil has gone down the engine into the carter (is this correct English? I want to say the place at the bottom of the engne where the oil comes together when the engine is off). Since the cold rev limiter only checks on water temp, is it safe to rev the car gently into VTEC up to 7k at this time? Is there enough oil in the upper part of the engine yet or does the engine oil goes up to the camshafts very quickly after a start?

Thanks for any answers!

 

I personally wait for about 6 miles of mild driving upon the first cold start of the day before going over 4.5k -- I try to limit myself to 4k. This is well after the coolant is up to temp -- 7 or is it 8 bars on my '05.

 

Why are you guys trying to second guess Honda's design team? Do you not think they figured this one out long before the car reached the marketplace?
Water temp and oil temp is loosely related. When your coolant temp reaches a certain temp that Honda has determined is OK to rev through the whole rev band, they have already determined that the oil temp (and viscosity at that temp) makes it safe to rev the car up. The oil temp DOES NOT HAVE TO BE THE SAME AS COOLANT TEMP! It will reach it's safe operating viscosity and temp (whatever that may be) when the coolant has reached about 140 degrees.

Come on fellas, you're giving yourselves a mental hernia by over-thinking this thing.

 

They're both '05 owners. They haven't become jaded yet....

At least they aren't asking, "Why did my car refuse to VTEC when I started it up this morning?"

 

Being both '05 owners the car is still unexplored territory to us The question only was to see if the oil pump gets the (still hot) oil up to the top part of the engine quick enough for the camshafts etc being oiled/greased within lets say 30 seconds after a standstill of about 30 minutes. The water and oil temp were still hot, so that would not be a problem.

 

I believe that even on cold mornings (-30*C), the oil will get to the top of the engine and begin to lubricate within 30 seconds. Doing so with warm oil is no problem.

 

After 30 mitutes parking with engine off (after 20 minutes drive), most of the engine oil is down to the oil pan, but the oil in the engine is still warm. Then you start the car and drive gently for several hundred meters or more than 30 seconds, that will be enought to have the oil back to all parts of engine, after that you can safely rev to redline.