RazMan
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| posted on 30/12/06 at 02:21 PM |
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What's a good engine temperature
My Davies Craig electric water pump controller allows some adjustment for engine temperature.
With the temp controller set to the minimum setting I am ticking over at 75 degrees which sounds a little on the cold side, although the ecu switches
the rad fan on at about 80 degrees.
So...
1. What is the ideal temp to aim for under normal conditions?
2. What temp should the rad fan kick in?
[Edited on 30-12-06 by RazMan]
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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rusty nuts
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| posted on 30/12/06 at 02:28 PM |
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Too cool may cause problems with emissions? and possibly accelarate engine wear although you may get more power with a lower temperature . Denser air
etc . Might be an idea to set it a bit higher and adjust the cooling fan cut in temperature a bit as well ?
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RazMan
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| posted on 30/12/06 at 02:56 PM |
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Aha - apparently 99 degrees is ideal. It's all about running the oil hot enough to boil the inevitable water content away.
http://www.locostbuilders.co.uk/viewthread.php?tid=33863
Looks like I will be turning the wick up a bit then  Troble is I now need to get into the ecu map to make the rad fan kick in a bit higher too or
the pump and fan will fight each other.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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DIY Si
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| posted on 30/12/06 at 07:25 PM |
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99 seems a little high. Most car engines I've seen run at 88-90ºC, although there pros and cons to going both higher and lower than this. Lower
should give extra power, at the cost of accelerated wear. Whilst hotter should give better economy but less power, and possibly prolonged life.
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
My new blog: http://spritecave.blogspot.co.uk/
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greggors84
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| posted on 31/12/06 at 02:09 AM |
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I doubt lower temps would give extra power air density wise as its only the air going into the inlets, which barely has time to be warmed up by the
engine. Its the ambient temps that will have effect (if any) on power.
Chris
The Magnificent 7!
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zetec
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| posted on 31/12/06 at 09:40 AM |
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Mine runs at 93. Fan on at 99 and off at 95. If you have an Emerald ECU I can help with the settings for fan on/off.
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RazMan
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| posted on 31/12/06 at 09:55 AM |
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Thanks zetec but I am using the MBE. I have the software to make the changes - funny thing is that the fan always kicked in at 90 until I had the
engine remapped so I guess that they must have accidentally changed a setting somewhere.
I will set the pump controller to 90 and the fan to 95(on) 92(off) - seems like a good starting point  At least until I get the car on the road
anyway.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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thomas4age
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| posted on 31/12/06 at 11:58 AM |
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99 degrees No way!
82 thermostat
85 running temp
fan on at 95 and off at 90 degrees.
oil a little below 100degrees.
that's about it for a good temp household.
75 is far to cold
grtz Thomas
If Lucas made guns, Wars wouldn't start either.
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