I guess the question is in the subject... How long is the right time to let an engine run for...


All advice appreciated...

[Edited by adeel.a - 10/22/2002 12:08:53 AM]

 

Normally never use it, but after a really hard thrash maybe 30 seconds max. I see people set their timers to 2 minutes + !! what a waste of fuel !!

 

After normal driving 1 minute. After a thrash/long run, 3 mins. It takes me this long to get the wheel clamp and disklok on anyway.

 

Agree with Jerome, I dont have a timer on the P1.. but by the time you fart around putting on clamps ect.. three mins is about right :-)

 

So would that be enough to prolong the life of my turbo (95' WRX) and for the bearings to cool down???

(you can see I'm not the technical one)...

 

I wouldn't bother. I never used a TT on my STI IV and rarely waited for it to cool down. The only exception being that if I'd been for a hard thrash and hadn't had a slow bit for the last 2-3 miles of the journey I'd give it 10-15s just before getting out of the car (usually whilst I got my stuff together).

Did 45k in 3.5 years, and never had any problems.

IMO, TT's are a gimmick. Does anyone actually have any long-term evidence that sitting with the engine running for 2 minutes actually makes a blind bit of difference?

 

Like chaps have said, by the time the disklock gets put on, keys found, **** retreived from under the passenger seat and mobile unplugged from handsfree... the cars ready to be switched off

 

i had the APEXi automatic one and it usually decided around 1 and a half minute

 

I let mine run for 30 seconds if I'm in the mood, but if the car has had a sound thrashing, I do the last 3-4 miles of my journey in high gear at low revs to get plenty of cool air over both the engine & the transmission/brakes. This has a far more beneficial effect than leaving your car stood building up heat in the engine bay.
As MarkO says they are probably more a gimmick to let you and others appreciate your big bore exhaust when you leave the caron pub carparks

 

I asked the dealer about this when I picked up my STi. His reply was: It's not really necessary on the modern turbos. I try to drive the last bit of the journey gently - easy when going home as I always potter thru' residential areas. What do you do when you've just pulled off the M'way for fuel though? Sit on the forecourt for 2 mins before filling up?

Charlie.

 

Exactly. I wonder how many 911 Turbo owners run turbo timers.

 

I wonder how many 911 Turbos aren't driven by rich blonde women who don't know what a rev counter is ?

Seriously, it's just common sense. You wouldn't (shouldn't) rag the car from cold, and so you warm it up.... makes sense to warm it down too....

 

If any rich blonde female 911T drivers want a few tips about what the rev counter is for; I'm available for a quick spin any time. I'll show you where the dipstick is too

 

Thanks for all your valuable tips...