How long to warm up?

amiers · 24-01-2010, 08:47 AM

My Fairlane when warm would sit between the N and O. recently i put in a new radiator and it seems to take a long time to warm up. i can drive for at least 10 minutes before it gets to the N and it now rarely gets to the O, even on 30+ days.

so question is - how long should it take? and is a lower temp good or bad? i was told if its not running at the right temp the ECU will make it run rich

mik · 24-01-2010, 11:44 AM

mine probably takes 10 minutes to warm up right through the metal, i`d have a guess though and say the thermostat opens up in probably half that time, so by 5 minutes it would be getting close to operating tempreture, i would`nt worry too much, it sounds pretty normal to me, unless it was staying substantially colder.

JMO · 24-01-2010, 02:31 PM

Might sound like an odd question but what would be bad about it being 'substantially colder' or taking longer than it should to warm up (e.g. thermostat stuck open)? What problems could/would it cause?

Simsy · 24-01-2010, 03:28 PM

Sounds about right, my AU sits on the N on the temp.
Takes about the same time to get their.

Your old radiator wouldn't have been working as efficient as your new one and hence probaly making the temp to climb quicker (less warm up time).

Where did the temp sit before the new radiator went in?

cedric · 24-01-2010, 06:53 PM

if it is too hot ,it will run rich and take out timing. the boss motor tuners acctually use termastats that run a bit cooler to gain power from the factory computer leaning out and adding timing. so my guess is you will use less fuel

lubby1 · 24-01-2010, 07:00 PM

I always let it warm up for a few miniutes if possible and i try to keep the revs down untill it reaches normal operating temperature.

mik · 24-01-2010, 09:59 PM

i`m not sure what tempreture the cold start cut off is, but if memory serves me correct there was a post about this sometime ago and 170 c was deemed safe, 160 was too cold but don`t hold my word to gospel, i run a 170 degree thermostat in mine it made very little difference , the fans cut in at factory preset :( probably 190 /195 i`m guessing, running in cold start mode runs richer(uses more fuel).

blueoval · 24-01-2010, 10:08 PM

I hear 82deg Celsius is the better thermostat to go for. Is this correct?

mik - from what your saying, the 170deg Fahrenheit/76deg Celsius is the lowest you advise before the cold start cutoff begins?

Simsy · 25-01-2010, 08:59 PM

82 C/ 180 F is the temp BPT motorsport have for their thermostats.
Power Stat they call it.

Bought one but never fitted it.

They reckon you get an extra 3kw's out of it, but yeah.

mik · 25-01-2010, 11:23 PM

Quote:

Originally Posted by blueoval

I hear 82deg Celsius is the better thermostat to go for. Is this correct?

mik - from what your saying, the 170deg Fahrenheit/76deg Celsius is the lowest you advise before the cold start cutoff begins?

if i remember the post correctly , it was 170 degrees minimum temp unless the parameters are changed with a flash tune, if it ran colder it would run in cold start mode .....fuel sucking rich, that was my understanding of it anyway, if i find the link for that thread i`ll put it up.

blueoval · 27-01-2010, 10:52 AM

thanks mik. I might just get the 170deg F one. I think I have a stock one at the moment.