Date: Wed, 04 Feb 2004 21:39:30 -0500 From: ma_twain <ma_twainnopsamo.com> Subject: Re: Do I need to let my turbo "cool down" for awhile ('1990 C-900T)?
Johannes H Andersen wrote: > > ma_twain wrote: > >>Grunff wrote: >> >> >>>Bob wrote: >>> >>> >>>>Back to the OP's question: turbo spin-down used to be a more serious >>>>issue when turbo units were not water cooled. >>>> >>> >>>The real answer, which I omitted in my previous replies, is this: How >>>many of us come off the motorway (US/Can: Highway) and turn off the >>>engine straight away? We don't - we drive down progressively smaller, >>>slower roads until we reach our destination, by which time the turbo has >>>cooled down plenty. :-) >>> >>> >>The original post also mentioned that he had 110,000 miles - and it still ran fine. >> >>However, many Saabs reach 300,000 to 400,000, so 110,000 and running >>fine is not saying much. >> >>Just my opinion, letting the engine idle for 30 seconds to 1 minute also >>allows the driver time to close the sunroof and windows. The sound of an >>idling Classic exhaust echos nicely in a concrete parking garage :-) >> > > On the other end of the scale, it is also important the let the engine > warm up gently before using the mighty turbo power, otherwise the head > gasket will be in trouble. > That can be said for any engine - turbo, supercharged or NA. This includes the driver as well. More heart attacks occur in the morning when people try to exercise as soon as they wake up.