2005 Mustang GT Heat Soak
07-01-2011, 09:24 PM
#11
6th Gear Member
IMO, there's not much you can do. These engines will run hot, hold heat and there's simply not a lot you can do without a cooler heatsink. Additives may kick it down a degree or 2 but not enough to make a ratz azz difference in performance.
07-02-2011, 07:18 AM
#12
Join Date: Oct 2010
Location: AL
Posts: 18
I have a stock 2005 GT. This week has been pretty hot in So Cal, and the different between early morning/night compared to my drive home in the late afternoon in terms of available power is incredibly noticeable. I was wondering if anyone had any inexpensive mod or DIY ideas to reduce the engine temperature (which is what I presume is the cause of the power loss). I've looked up things like oil coolers but that is definitely way out of what I can spend. I've read mixed reviews on things like radiator additives (Royal Purple?) and am not sure if it's worth even putting in. I know this is something that is just part of owning the car, but if anyone has any ideas on how to at least alleviate some of the heat I'd greatly appreciate it, thank you.
07-02-2011, 09:45 AM
#13
Cut & Paste Expert
Join Date: May 2007
Location: NW Arkansas
Posts: 13,322
You cooling fan does come on until ??212 degrees?? OEM.
Mine were not coming on until way too high for me.
I dropped in a 175 degree thermostat instead of the
200 degree OEM one. And hooked up a 185 on / 170 off fan
switch on to the OEM low speed cooling fan relay.
I installed the sensor in the upper radiator hose with one of these...
My coolant temps are never over 176 with the AC off
and because the cooling fan runs on high OEM when the
AC is on, I never see temps over 186 with the AC on.
And its been hot 101 degree scorcher days around
here for some time.
When the coolant is 15 degrees below the 200 degree OEM norm,
this allows some breathing room for the heat soak situation.
Mine were not coming on until way too high for me.
I dropped in a 175 degree thermostat instead of the
200 degree OEM one. And hooked up a 185 on / 170 off fan
switch on to the OEM low speed cooling fan relay.
I installed the sensor in the upper radiator hose with one of these...
My coolant temps are never over 176 with the AC off
and because the cooling fan runs on high OEM when the
AC is on, I never see temps over 186 with the AC on.
And its been hot 101 degree scorcher days around
here for some time.
When the coolant is 15 degrees below the 200 degree OEM norm,
this allows some breathing room for the heat soak situation.
Last edited by 157dB; 07-02-2011 at 09:53 AM.
07-02-2011, 10:00 AM
#14
2nd Gear Member
Join Date: Mar 2010
Location: KS
Posts: 260
Could what we are really talking about here as the culprit is the ingested air temperatures since we are talking performance? I know in the AM (5:00) when I'm going to work and it is 75 degrees, my car seems like it has 20-30 more horseys than when I come home in the aftenoon and its 104.
07-02-2011, 10:56 PM
#16
4th Gear Member
Join Date: Apr 2008
Location: North Idaho
Posts: 1,440
Could what we are really talking about here as the culprit is the ingested air temperatures since we are talking performance? I know in the AM (5:00) when I'm going to work and it is 75 degrees, my car seems like it has 20-30 more horseys than when I come home in the aftenoon and its 104.
Last edited by Lifter583; 07-02-2011 at 11:06 PM.
07-03-2011, 12:56 PM
#17
3rd Gear Member
Join Date: Jan 2008
Location: Delaware
Posts: 708
Could what we are really talking about here as the culprit is the ingested air temperatures since we are talking performance? I know in the AM (5:00) when I'm going to work and it is 75 degrees, my car seems like it has 20-30 more horseys than when I come home in the aftenoon and its 104.
07-05-2011, 04:23 PM
#19
4th Gear Member
Join Date: Feb 2008
Location: Pensacola, Florida
Posts: 1,465
The car with water/coolant booster only maintained 20 degrees cooler IAT2 temps on average versus the car that had a 50/50 mix. Of course, the absence of glycol commonly used in anti-freeze was the major difference, not the additive. The additive prevents straight water from eating the metal in the cooling system. Straight water and additive FTW in summer time temps.
07-05-2011, 07:30 PM
#20
6th Gear Member