cooling off wrx

General rule for any engine that is run heavily loaded should be idled for ~ one minute before shutdown. That lets the exhaust valves cool and the turbocharger wind down while it has oil and water circulation. eddie

Grats on the car, go easy on the tranny and follow the recommended break-in.

A good source for question/discussions

Check your handbook, but as far as I aware this is not necessary from the bug-eye cars onwards. which do not rely on oil circulation to cool the turbo. The earlier cars have an advisory sticker on the inside of the driver's door. Mind you, I'd be tempted to let it run on for a minute or so if stopping straight after a period of hard driving. In most cases, of course, you'll have been dawdling for a bit in local streets before parking up, so no need.

David Betts snipped-for-privacy@motorsport.org.uk

Of course, but that's not the reason for the one-minute idle requirement on the pre-bug eye cars. You'd have to shut down an engine remarkable rapidly for oil pressue to fall before the turbo had stopped spinning

David Betts snipped-for-privacy@motorsport.org.uk

Correct me if i'm wrong...

I have a 02 WRX. I was told that since the turbo is water cooled (not oil) and the turbo sit's lower than the upper most water level, it is always surrounded by coolant and will not develop the "cooking" of the turdo bearings.

So in essence you don't have to cool down the turbo. However, on my last turbo charged car (91 Plymouth Laser) I had to replace the turbo after only 60K miles. Thank god for the Plymouth 7/70 warentee. The part alone was $1000. I always give the turbo about 1 minute cool down.

In one of the aircraft I used to fly (Cessna 310) was twin turbo charged. We were required to have a 5 minnute cool down period. But we flew at a much higher boost pressure. I have to say it was cool to look into the engine vent's when flying at night and seeing thoes turbos cherry red!

Cessna 310 twin turbo really? The Cessna 310 is normally equiped with single turbo engine ( TSIO-520). What is that mod?

"Mark" a écrit dans le message de news: snipped-for-privacy@posting.google.com...

If it matters I have had 2 CELs and both times were for a misfire in cylinder 3. The dealer told me that's the one nearest the turbo and that not letting it cool down may cause the misfire. I normally let the car cool down for the minute, but on both occasions it happened after I did not. May be coincidence, but ever since I let it cool down for at least the minute every time and haven't had it happen again. Either way, doesn't hurt, unless you're that anal about wasting gas :) For less than a hundred bucks you can get a turbo timer that will let you take the keys out and lock the car (and arm the alarm) but still keep the engine running for a pre-determined time (or in some cases a time determined by how hard the car was driven).

Just my 2 cents.

Twin turbo ment 1 for each engine.. Sorry, that was lazy typing/explaining.

I actually flew (about 6 years ago) a C310R with RAM engines and q-tip props. We then added the vortex generators to the wings and it really help the low speed handling. We typicially flew with all tanks (plus locker tanks) full of fuel (202 gals). With all the fuel and camera gear we were a little over gross.

Ever try landing a 310 without using ANY flaps? Did it once.. damn thing just droped out of the air when we were about 3 feet above the runway. OUCH