I used to own a Grand Prix, and the stock Tstat was 194*... what we would do is put a 160* in there for the summer, and a 180* (or back to stock) in the winter.


I tried looking to see if anyone does that, or if it helps this car, but i could not find any information.



My questions are:

1. What is the stock Thermostat degree?

2. Can we replace it with a 180* or 160* tstat?

 

Bump, cause i'm curious..

 

Bump because I'm curious too.

 

call Tom @ Crate Engine Depot on Monday. 1-800-441-5150 (Crate Engine Depot)

 

mm..bump.
i'm interested too! did that to my jbody and it helped bring the temps down a little.

 

Well, the way our fans run by generating more air as the temperature rises we run in a range naturally. The 160* tstat will FULLY open sooner than the 180* allowing a little more coolant flow, but once stopped at a light after some "spirited" driving the car will still creep up in temperature. IMO the best solutions are using HP Tuners to control the fans and have them run full speed at your desired temperature; also, if it was extremely hot in the summer time you could run without a thermostat, but I wouldn't recommend it for DD.

 

so we can run a 160 tstat then, yes?

 

Yeah you can, if you can find one. All it amounts to is that your engine will take a little longer to warm up.

 

i know exactly what it does... been doing it for years in my grand prixs

 

The PCM will add a small amount of timing due to cooler ECTs.

 

Call auto zone or the dealer and if they have one they will give you that option. You will just have to change it out in the winter if you get cold weather or your heater will not get as hot.

 

curious?

 

It'll take the same time but wont get as hot....

 

This is only true if you adjust the fans using HP tuners. Other wise at a light your car will eventually heat up to the temps that the computer is looking for; this will take longer than with a 180* thermostat.

While driving it will run cooler, and if you adjust the fans to come on sooner. But other than that it will still heat up. It simply opens all of the way at 160, from that point airflow is what determines holding it there.

Then why are you asking questions?

 

well i think that the car runs 180 degrees and higher. so 150 wouldnt even by bad. but if your going to go that low just take out the thermo completly and have straight through flow

ryan.

 

To see if people do it on these cars..


some cars you just do not do it.... all depends on how the engines run..



obviously for the Grand prix.. the colder the better..



I also had a SHO taurus, you wanted that thing around 190* for best performance, thus we leave the stock Tstat in.

 

Yeah. I personally would leave the stock thermostat in this car. I would just adjust the fan through hp tuners, but that's just me. Those SHOs are faster than people think haha.

I agree; if I were to change something, I would completely remove the tstat.

 

or.. you could just tweak that yourself with HP.. and not worry bout the T-stat..

 

He was just saying that it will happen when you change out the tstat. He didn't say change the tstat to add timing.

 

I don't believe anyone makes a replacement thermostat for our cars yet. I've looked at several places and all I can ever find is the stocker.

I believe going down to a 180 degree thermostat would help our cars out. I know they need to run at a certain temp for everything to function properly... but going over 200 is just too hot IMO.

 

Our tstats are 180*. As stated earlier, you need to change when the fans come on and their intensity using HP Tuners or similar; otherwise the car would still climb up to 200* if you sat in traffic long enough.

By changing the fans through HP Tuners, you can keep the temperature under 190 at all times without changing the tstat, no problem.

 

Yup.. i understood that..

But if that was percieved as a benefit.. or reason for doing it then its not a 'good' reason

Thats all i was saying..

 

Proof that our thermostats are 180? Not doubting... just site your source plz.

 

Alldata.

"Specifications

These engines use a 82°C (180°F) thermostat. The ambient temperatures should be within the specified range given."

 

you are telling me..



here are my videos

beating cars that i shouldnt have... I had a freak


http://1997gtp.net/sho/