What T-stat To Go With ?

MY 85 GT · Jul 1, 2015

I have a mostly stock 92 GT im guessing it has a 190-195 t stat in it....i dont like they way it sits on the temp gauge right in the middle will go up a hair then settle to the middle once going again...i was thinking of going with a 180 what are your opinions?

Gearbanger 101 · Jul 1, 2015

Leave it stock. There's more disadvantage to going with a colder thermostat, than there is advantage. Don't put too much faith in the stock dummy gauge, they should be used as a reference point, not as gospel.

mikestang63 · Jul 1, 2015

That has nothing to do with your stat.

Rule of thumb- if it gets warm when stopped or in traffic, then its your water pump or fan, it when at highway speed it is airflow- radiator or front air dam missing.

TOOLOW91 · Jul 1, 2015

Stock . All the colder is gonna do is result in poor fuel mileage etc . I have a 180 in my car but again completely diff story

Sent from my iPhone using my fingers while my auto correct makes me seem illiterate

MY 85 GT · Jul 1, 2015

OK I don't know how accurate the stock gauge is the car goes up more at idle or stop and go but when driving it stays in the middle.

Gearbanger 101 · Jul 1, 2015

Are you hearing pinging (detonation) when you get in and out of the pedal in high gear in heavier traffic? If not, the hotter thermostat isn't hurting you.

These old Fox's will generally creep up a little in traffic, vs running down the highway. Totally normal.

MY 85 GT · Jul 1, 2015

I didn't hear anything but I know he said he advanced the timing a little....

Shakerhood · Jul 1, 2015

Go with a Stock 192, you also might want to flush the system and put new coolant in too.

MY 85 GT · Jul 2, 2015

I have a SSP fan clutch i might throw that on too..i checked the fan clutch on the car it really doesnt seem to have an resistance so im wondering if the clutch is no good?

squeak93 · Jul 2, 2015

Stick with stock and fix the real issue (clogged/dirty rad or bad water pump or fan). I went with a 3 core rad, electric fans and 180 stat. My car BARELY hits 175 until I'm in dead stop and go traffic. If on the highway it might get lucky to hit 170 (fans never come on lol). I would swap it but I am not doing the work again as we are building a replacement motor as we speak. That one will likely get a stock stat in it since my cooling system is set on kill.

MY 85 GT · Jul 2, 2015

Im going to flush the radiator the water pump was replaced before i got it...like i said i did notice the fan clutch seemed to not have much resistance from what i remember on my 87 GT the fan had more resistance...the car cools down once driving making me this its air flow...?

squeak93 · Jul 2, 2015

If it cools when driving but not that great at low speeds (fan operating ranges) then its quite possibly a fan issue. Do you have the air deflector under the radiator support in tact still?(it moves air up into the rad/condenser from underneath)

MY 85 GT · Jul 2, 2015

Yes im pretty sure its there i will re-check...when i get home today...

Gearbanger 101 · Jul 2, 2015

Generally when the fan clutch on these go bad, they cease up…not so much free wheel.

MY 85 GT · Jul 2, 2015

My last one when it didnt work it free wheeled...when i bought the new one it had resistance....thats why i think this one might be bad i know they usually get a little tighter when hot....this one doesnt..

mikestang63 · Jul 2, 2015

MY 85 GT said:
My last one when it didnt work it free wheeled...when i bought the new one it had resistance....thats why i think this one might be bad i know they usually get a little tighter when hot....this one doesnt..

If the silicone all leaked out then it will freewheel. Do you see the black goop on the blades?

squeak93 · Jul 2, 2015

All my fans that have died just free wheel. I've not had one lock up actually.

MY 85 GT · Jul 2, 2015

No i dont see any goop....but i know the fan doesnt seem to have resistance to it,..I took an SSP one off my turbo car i still have it might throw it on and see what happens,...the only thing i didnt like about it..IT was loud...lol you heard the fan...gushing air...which i guess is a good thing....

MY 85 GT · Jul 2, 2015

here it was on my old 87 you can hear the fan..lol...

View: https://www.youtube.com/watch?v=fryFBYOvZmk

What T-stat To Go With ?

MY 85 GT

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mikestang63

TOOLOW91

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MY 85 GT

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squeak93

MY 85 GT

squeak93

MY 85 GT

Gearbanger 101

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MY 85 GT

mikestang63

squeak93

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