#2290992 - 05/04/11 10:56 PM
What temp thermostat do you use and why?
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Member
Registered: 11/18/07
Posts: 152
Loc: Elkton, MARYLAND
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Ok i was changing to the 180 degree stat since i got a custom tune. i see some on here running 160 thermostats. At what temp is to low? 160 seems really low. i was trying to do a poll but it wouldn't let me in this section.
so long story short what temp and why? and do you have any problems out of running the one you do?
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1999 Maryland state Trooper still painted green/black
223,xxx miles,BOC custom 93 octane tune, PI intake, PI cams, 70mm Throttle body,05 CVPI air assembly with 80mm MAF, thrush welded (40 series knockoffs)
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#2291034 - 05/05/11 12:29 AM
Re: What temp thermostat do you use and why?
[Re: snyper94z28]
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I know nothing
Posting Addict
Registered: 06/05/10
Posts: 19872
Loc: I can see Detroit from here!
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195* because thats stock and I have no mods or tune to support a colder thermostat. 160* is what the stock tune considers "operating temperature" (or is it 165, whatever), so 160* definitely seems too low unless you have some serious mods requiring it.
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-Steve  2006 Audi A6 ~132k miles, stock. 1998 Mercury Grand Marquis LS HPP ~100k miles, slowly acquiring modifications. 1997 Town Car Cartier ~145k miles, Ported Plenum, Gutted Airbox, Contour E-fan Retrofit, Dual exhaust with Magnaflows, cats deleted, MSD Ignition, KYB Gas-A-Justs, P71 front bar, air ride reinstated, Projector retrofit, Caddy 4-note horn retrofit, Wood rim steering wheel retrofit, holistic weight reduction as the parts fall off.. 1996 Mercury Grand Marquis GS 117,485mi. R.I.P. 7/14/12 
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#2291083 - 05/05/11 02:31 AM
Re: What temp thermostat do you use and why?
[Re: snyper94z28]
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Member
Registered: 11/18/07
Posts: 152
Loc: Elkton, MARYLAND
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if you go to low the car wont come out of closed loop. thats why i was asking what temp and if any problems. im sticking with 180, but i have sen people on here saying they use 160 so i was wondering why.
_________________________
1999 Maryland state Trooper still painted green/black
223,xxx miles,BOC custom 93 octane tune, PI intake, PI cams, 70mm Throttle body,05 CVPI air assembly with 80mm MAF, thrush welded (40 series knockoffs)
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#2291093 - 05/05/11 03:57 AM
Re: What temp thermostat do you use and why?
[Re: snyper94z28]
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Over the Hill
Registered: 03/23/10
Posts: 1735
Loc: Seattle, WA
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I'm using the 180 degree stat, and no problems, i'd suspect, correct me if i'm wrong, that 160-165 stat for racing applications or blowers because of heat soak. IMOP.
_________________________
 1998 Mercury Grand Marquis LS, HPP package FRPP PI Intake from ADTR, Ported Plenum from ADTR, Steeda Plenum Spacer from ADTR, MSD Coils BBK 70MM TB from ADTR, E3 Plugs, 2004 MZT, SCT X3 Tune from BOC, MAF Jumper from BOC, Optima Yellow Top Marauder Spoiler, Steeda Oil Separator W/custom bracket, Metco Control Arms & Watts Link Addco Rear Sway Bar w/ES Bushings, 3:73 Rear Gears with FRPP Trac Lok, Superior Rear Axles, Spruce Green Brake Calipers PowerSlot Slotted Discs, Hawk HPS pads, Extended Tailshaft with P71 DriveShaft, Rebuilt/Painted Rear Axle, Bilstien Shocks, Chrome FR500 18's, Nitto 555's - 255/45-18 F, 285/40-18 R "One doesnt simply drive the speed limit when listening to Heavy Metal"
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#2291120 - 05/05/11 07:48 AM
Re: What temp thermostat do you use and why?
[Re: snyper94z28]
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13.97@99MPH
Grand Poobah
Registered: 03/28/06
Posts: 12731
Loc: ATL
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I run a 180* stat because I am tuned for it.
people running 160* state are most likey boosted or run N20 and are tuned for it.
The colder the stat the cooler the engine runs which means the more timing can be added and thus more power.
When you get up in the mods like high compression, boosted, or N2O it produces more heat quicker so they run the cooler stat to help compinsate for that added heat.
Now most should be running the coorisponding cooler heat range plugs to take full effect. For instance I am tuned for the 180* stat and one step cooler plugs. When you go boosted or N2O they usually take a two step cooler plug and 160* stat.
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1993 Lincoln Town Car 150k+ - RIP 5/10/2011 1998 Ford Crown Victoria P71 - RIP 12/25/2006 2001 Ford Crown Victoria P71(Count blackula) 297k+ - Ummmmmm 
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#2291203 - 05/05/11 11:46 AM
Re: What temp thermostat do you use and why?
[Re: snyper94z28]
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Over the Hill
Registered: 05/10/10
Posts: 4420
Loc: Virginia
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if you go to low the car wont come out of closed loop. ???????????????????? You mean go in to closed loop??? Which is false... With the heated o2 sensors the ECM goes to closed loop anytime the engine is at approx 100*F and the o2 sensors are hot enough to give A/F ratio info... I suppose the minimum temp can be altered with a custom tune but that's the way it is in a stock tune...
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1998 Grand Marquis LS. 96K mi. .. Stock 2007 Grand Marquis GS. 90K mi. .. Stock 1996 F-150 XLT 196K mi Beater, Stock ---------- My Toys--------- (links are up)1969 Fairlane Cobra 428CJ 4-Speed 1972 Comet GT Restomod 306, C4 1988 Turbo Coupe 331 AOD & 3.73 .. Pressurized ½ Motor is History *****************NEW TOY!!!*********************1969 Base Fairlane 302, C4, 45K mi(really!) Now with P/S & PDB Gonna wake it up with a Blue Print headed 347
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#2291262 - 05/05/11 01:39 PM
Re: What temp thermostat do you use and why?
[Re: snyper94z28]
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Member
Registered: 09/23/10
Posts: 300
Loc: U.S.
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what temp and why? and do you have any problems out of running the one you do? 195*degree, Stock daily driver, no problems
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1998 M.G.M. M75 LS, H.P.P.
"The pain of every change is forgotten when the benefits of that change are realized"~Tom Hopkins
�Everybody pities the weak, jealousy you have to earn�~ Arnold Schwarzenegger
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