Warming / cooling a N/A engine

Ricochet J

Ricochet J

Ricochet J

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Joined
29 Jun 2004
Posts
12,957
It's good practice to ensure all relevant temperatures and pressures are at adequate levels before putting your foot down in a charged engine. The same is true for switching the engine off, ensuring all relevant temperatures and pressures are okay.

Is this true for a N/A engine?

In a lot of things I do, I have an engineering bias. I make sure the engine temperature is at optimum before putting my foot down. After a long motorway blast I let the engine idle for a few mins before switching it off.

What are your opinions on this?
 
I always let the engine get up to temperature before going over 3k revs and generally keep it lower than that too. Oil works best when up to temperature so it reduces wear by doing this. If you only own the car a couple of years it won't make much difference but over the lifetime of the car it should do.

I also always let the engine idle for a minute after a long run.
 
I've always let cars come up to temp before I give them any serious throttle and I try to let them have a sensible cool down too after a run, but not simply letting them run I drive them slowly most of the time for the last couple of miles.
 
Dont rev it hard from cold, stay below 3-4k rpms until the oil temp is at its normal reading. Ive never bothered leaving a NA engine to run after driving, only done that with turbo'd cars for 30 secs or so.
 
Revving them wont hurt (within reason NOT red lining) it is labouring them that does the damage as the oil will not be protecting it from cold.
 
I've always let the car sit for a minute or so if it's been on a long journey (up to Scotland on Friday!), don't think it can hurt.
 
Finglonga said:
Revving them wont hurt (within reason NOT red lining) it is labouring them that does the damage as the oil will not be protecting it from cold.
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This, best thing to do is get in the car and drive it, don't let it sit there idling.

I give the car a 30 sec cool down before turning it off, but habit from having turbo cars.
 
Maccy said:
I've always let the car sit for a minute or so if it's been on a long journey (up to Scotland on Friday!), don't think it can hurt.
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Don't see how it would do any good either?

I thought idling was bad for a N/A? Or is it idiling cold that is bad for a N/A?
 
I always let mine get up to temperature before I thrash it.

This means I almost never thrash it, as it rarely gets up to temperature :(
 
[TW]Fox;19738957 said:
I always let mine get up to temperature before I thrash it.

This means I almost never thrash it, as it rarely gets up to temperature :(
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That's the problem with caring about your car and not living very far from work etc.
 
I've got an oil temperature guage instead of an mpg guage (This makes me a Sad Panda as I liked my mpg guage) and no water temp guage.

So the only indication of how warm the car is the one measure that takes ages to get up to temperature :(
 
Well, I don't have an mpg read out, but oil temp read outs are great! Great at making you paranoid as to when you can boot it I mean!

I watch mine like a hawk, and even when it says up to temperature I'm not convinced, so wait a bit longer :(
 
What happens to residual temps anyway, once it's off it'll get to the hottest it'll be anyway without active cooling.

If your driving normally then letting it idle for a few minutes before switching it off would only increase temps as you've lost the cooling effect of the air.

Gunning it then letting it idle for a few minutes then switching it off surely is terrible then?
 
i've got a 182 :)
keep it steady while it warms for 10/15min (stay under 3k), and perhaps you could go for a cool run after (perhaps the way home take it easy?)
apart from that you should be fine!

come on over to cliosport.net and join the forum if you're not on already! :D
 
I let mine warm up but am not bothered about letting it cool down. That said I never thrash it and drive like a granny because I object to how much petrol costs, that and its distinct lack of performance.


[TW]Fox;19739000 said:
I've got an oil temperature guage instead of an mpg guage (This makes me a Sad Panda as I liked my mpg guage) and no water temp guage.

So the only indication of how warm the car is the one measure that takes ages to get up to temperature :(
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Good, because it's the oil that needs to be up to temperature, not the coolant...
 
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