Engine Temp Whats Normal?
03-22-2009, 07:15 PM
#1
Staging Lane
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Engine Temp Whats Normal? Guys need a little help what the normal temp for the fans to turn on.
John (Speartech) i think you said 205 for the first, i seen my temp hit 210 and NO second fan what should the normal action be? seems kind of HOT?
I have a LS2 in a 66 Nova so i am trying to get everything sorted out on my transplant.
Steve
John (Speartech) i think you said 205 for the first, i seen my temp hit 210 and NO second fan what should the normal action be? seems kind of HOT?
I have a LS2 in a 66 Nova so i am trying to get everything sorted out on my transplant.
Steve
03-22-2009, 07:42 PM
#3
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With a LS1 and a 180 T-Stat:
Fan 1: On: 211 Off: 204
Fan 2: On: 219 Off: 212
Thats just personal preference. My car runs normally ~196F. I run with the 'newer theory' that higher coolant temps of 195-205F is optimal.
Again, people get pretty passionate over this subject. Just letting you know that some people run higher ECT's. I find IAT's rule engine performance to a far greater degree.
Good luck.
..WeathermanShawn..
Fan 1: On: 211 Off: 204
Fan 2: On: 219 Off: 212
Thats just personal preference. My car runs normally ~196F. I run with the 'newer theory' that higher coolant temps of 195-205F is optimal.
Again, people get pretty passionate over this subject. Just letting you know that some people run higher ECT's. I find IAT's rule engine performance to a far greater degree.
Good luck.
..WeathermanShawn..
03-23-2009, 11:26 AM
#4
The reason for cooler ECT in the days of old was due to the coolant passing through the intake manifold, so you would need to run cooler ECT temps to keep heat saturation down to prevent the IATs from skyrocketing. With the new intakes, heat soak is not an issue as coolant does not flow through it. ECT temps in the 220 range are stock and not outrageous. Most street cars I set up to run above 190 degrees.
03-24-2009, 09:33 PM
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Staging Lane
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As a suggestion, write down your coolant temperature after driving on the freeway in cruise for 10 minutes. Then set Fan 1 on at +5* above that value, and off at +3*. Fan 2 on at +8* and off at +5*.
03-25-2009, 11:40 AM
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In a conversion setup I would eliminate PCM
controlled fans altogether, run them stand-
alone off a core mounted thermostat at a
temp somewhere below your engine coolant
thermostat crackpoint. There are clunky looking
kits (Hayden, I think) or just use relays and
a snap-action thermostat (Selco, is one brand)
with a secondary circuit to kick on when A/C
is enabled.
controlled fans altogether, run them stand-
alone off a core mounted thermostat at a
temp somewhere below your engine coolant
thermostat crackpoint. There are clunky looking
kits (Hayden, I think) or just use relays and
a snap-action thermostat (Selco, is one brand)
with a secondary circuit to kick on when A/C
is enabled.