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» Northern California Ford Owners     » Automotive   » Tech Talk   » should i take off my thermostats 89 5.0

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Author Topic: should i take off my thermostats 89 5.0
Notch_notch
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my engine is getting hot about 1/4 temperature, i was driving on freeway going down a little... help me what kind of degree thermostats should i get 160-180-190 which is the best??

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Posts: 1912 | Registered: Jan 2009  |  :
DARKSHO
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I dont think 1/4 is hot, 3/4 could be but a thermostat is cheep. Im running a 185 deg. and my car runs at 190 to 230 depending on how Im driving, if that doesnt work check your radiator it mite be partly pluged
Posts: 191 | From: 408 | Registered: Feb 2007  |  :
1989lx5.0
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ya 1/4 isnt hot, also you might have better luck posting in the tech section. [Wink]

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Posts: 552 | From: near fresno | Registered: Oct 2003  |  :
92stangLX
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No, do not remove your thermostat or your car will run like shit. I would run a 180.
Posts: 5302 | From: San Francisco | Registered: Sep 2003  |  :
89 306
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180

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02 mustang gt...mods soon to come!

89 lx: 306. edelbrock. heads..ported gt 40 manifolds..and all that other good stuff.

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Posts: 1268 | From: richmond | Registered: Mar 2009  |  :
Blind
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the thermostat does not determine how hot or cold your engine runs, the radiator and fan and the running condition of the engine do.

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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi

Posts: 8521 | From: Fairfield | Registered: Jul 2003  |  :
fastertoys1
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quote:
Originally posted by 92stangLX:
No, do not remove your thermostat or your car will run like shit. I would run a 180.

i dont run a thermo in my car, runs just fine..
does take about 5 mins to warm up in the morning but what 20+ yr olds car doesnt?

Posts: 2178 | Registered: Jan 2005  |  :
Notch_notch
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No my temperature 1/2 above something like 2 clock.. I just change my waterpump.. You know

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Posts: 1912 | Registered: Jan 2009  |  :
RAP66
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if it's an EFI motor the t-stat should be 190-195, the ecu is calibrated to work at that temp.

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Posts: 893 | From: SF Bay Area | Registered: Oct 2003  |  :
sic70stang
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why do people take out t stats....

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Posts: 6940 | From: California | Registered: Jul 2005  |  :
Adam5.0
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cars gonna run hotter without t stat. the t stat also regulates coolant flow to allow more time for heat transfer.
the stock temp gauge isnt the best thing to go buy. get an autometer gauge. you might not even have a problem

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Posts: 1609 | From: Brentwood | Registered: Aug 2006  |  :
SF Coupe
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quote:
Originally posted by Adam5.0:
cars gonna run hotter without t stat. the t stat also regulates coolant flow to allow more time for heat transfer.
the stock temp gauge isnt the best thing to go buy. get an autometer gauge. you might not even have a problem

Internet myth. More coolant flow yields better cooling. None of the guys I race with run t-stats. My car runs cooler on the track without a t-stat. However, they should be run on street cars. It keeps the engine at the proper operating temperature.
Posts: 1082 | From: SF | Registered: Sep 2002  |  :
JohnB
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quote:
Originally posted by SF Coupe:
quote:
Originally posted by Adam5.0:
cars gonna run hotter without t stat. the t stat also regulates coolant flow to allow more time for heat transfer.
the stock temp gauge isnt the best thing to go buy. get an autometer gauge. you might not even have a problem

Internet myth. More coolant flow yields better cooling.
Incorrect. It WILL run hotter overall. Unregulated flow will not cool as efficently as regulated flow. The fluid must be in the radiator "x" amount of time to cool, otherwise it will retain the heat, go through the engine again, and heat up even more.
FI cars are built to run at a certain temp. Changing that temp without adjusting said parameters in the computer will only make it worse.

If you have a temp problem, fix the problem...

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Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002  |  :
Blind
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quote:
Originally posted by SF Coupe:
quote:
Originally posted by Adam5.0:
cars gonna run hotter without t stat. the t stat also regulates coolant flow to allow more time for heat transfer.
the stock temp gauge isnt the best thing to go buy. get an autometer gauge. you might not even have a problem

Internet myth. More coolant flow yields better cooling. None of the guys I race with run t-stats. My car runs cooler on the track without a t-stat. However, they should be run on street cars. It keeps the engine at the proper operating temperature.
how far have you driven the car like that? It doesn't cool the fluid enough and the car will overheat if you drive it on a long trip. I bought a 5.0 a while back and the first long trip with it, it overheated on the freeway, dug into it and there was no thermostat, replaced it with a stock 195* thermostat and it never overheated again.

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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi

Posts: 8521 | From: Fairfield | Registered: Jul 2003  |  :
SF Coupe
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Guys, I respect your knowledge on many things. But on this you're buying into an internet myth. I've spoken with race car engineers and a lot of guys at the track who race their cars. More flow in our cooling systems means better cooling. When I drive my car to the track it runs at 160-170* with the t-stat out on a 3 hour road trip. With the t-stat it ran at 180*. On the track the car runs at 195-210* depending on ambient temp. With the t stat it ran at 210-230*. Blind, what probably happened in your case was pump cavitation. Some pumps will cavitate if there is no back pressure in the system. Here are couple of pages, one from stewart components, who make thermostats!

http://www.stewartcomponents.com/tech_tips/Tech_Tips_3.htm

http://corner-carvers.com/forums/showthread.php?t=29454&highlight=thermostat

http://corner-carvers.com/forums/showthread.php?t=23746&highlight=thermostat

Posts: 1082 | From: SF | Registered: Sep 2002  |  :
JohnB
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With regards to your links, none of them pertain to the issue at hand. Removing a thermostat is not the fix for a cooling issue...nor should it be the cause of a overheat condition.

Additionally, the links you posted are opinions, just as ours are. Be it a manufacturers website (which said nothing about running without a thermostat being beneficial) or another message board, it's still opinions. [Smile]

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Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002  |  :
SF Coupe
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True, a t-stat is the way to go in a street application. However, your argument about dwell time is not based on anything but an old wives tale. The "opinions" in the linked threads and stewart's website are based on thermodynamic formulas that disprove the dwell time myth.
Posts: 1082 | From: SF | Registered: Sep 2002  |  :
JohnB
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quote:
Originally posted by SF Coupe:
True, a t-stat is the way to go in a street application.

I'm glad you realized we're talking about a street car, not a race car. [Wink]

Dwell time, when referenced to a EFI setup, is not a myth... with regards to a street car. Proper operating temp/range is critical to the longevity and efficient operation of a street car.

C

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1993 Cobra
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Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002  |  :
asskickn88
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quote:
Originally posted by SF Coupe:
True, a t-stat is the way to go in a street application. However, your argument about dwell time is not based on anything but an old wives tale. The "opinions" in the linked threads and stewart's website are based on thermodynamic formulas that disprove the dwell time myth.

I'd go with a 180 in your car, if it runs too cool it will stay in open loop and get SHITTY gas mileage..... ask me how I know.


Ok, we had a circle track car that was running hot with no thermostat. They make discs that go in place of a thermostat that restrict the flow, we added a med size one and it ran perfect. The water needs time to dissipate heat into the radiator or it won't cool the car, end of story.

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Posts: 6069 | From: Rocklin, Ca | Registered: Oct 2004  |  :


 
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