Thermostat

[Stangman]

Is there such a thing as a 170 degree thermostat in the larger diameter. If I punch it in they come up the small diameter. Has anyone found one and know part number.

[GerryP]

I've never heard of a 170 stat.  Factory is 195, and they're readily available in 160, 180, and 195.  The smallblock MOPAR (and others) uses the same large diameter stat so you might try searching Rockauto to see if something turns up there.

[Jb427]

Are they 2 1/2 inch?

[427mach1]

Are they 2 1/2 inch?

I believe the thermostat is 2-1/2" OD and the hole in the housing is 2-3/8".

[Jb427]

Ok not that it really helps Stangman but that size is very common here in Australia

Tridon part #tt334-170 check the web page see if this will fit size is all metric https://www.tridon.com.au/products/Tridon/35/479/thermostats-nd-gaskets/381955/thermostat/1325/TT334-170#
ns
I can't find any of the Australian brand names in the USA.

If you get stuck I can get one and post it over. The retail for around 65 70 AUD they are not really cheap.

[Stangman]

I see the flange diameter is 64 mm, I believe the Ford one is 58 mm which I believe is 2.5 inches. Every time I punch in it comes up the small thermostat. I really just wanted to try it. I usually use a 180. I just used a 160 but the fan come on and stays on. The 180 depending on the outside temperature the fans go on at 192 and will shut off sometimes. Would just like to leave myself a little wiggle room with the 170. Gonna get a new cooling system as soon as I save a little and then I probably will be good. I told Harry what I was getting and he went and got it and it’s working out well for him. He’s got 625 horse and he’s saying around 185 even in hot weather.

[Jb427]

58mm is 2.28 inches so just over 2 1/4 inch they don't make a 58mm one but there is a 56mm or 2.2 inch

https://www.tridon.com.au/products/Tridon/35/479/thermostats-nd-gaskets/528046/thermostat-high-flow/1306/TT281-170

That sounds more like how you have your fans set up are you using a stand alone fan controller?

[Stangman]

Hmm I guess 2.5 inches is 64 mm. I’m using a single temp sensor for both fans. To be honest at the moment I don’t have a thermostat in there so maybe that’s why it was running a little hot today. When it was just sitting there and I was making timing adjustment and carb adjustments it wouldn’t go over 180/185. Sitting there for 30 minutes. Then drove to a buddies house about 7 miles away and it was 195 all the way.  I know it’s not terrible but it’s not what I want. I’m gonna get the cooling system I want but I did want to try a 170 thermostat with a fan switch of 185 and I think that would be a nice compromise. I’m gonna see if my parts store can get that thermostat your showing

[Jb427]

I hope you have some luck with thermostat I would not be surprised if that brand is just called something else in the USA. 

I think for your new set up you should look into something like this for your fans

https://www.summitracing.com/parts/dcw-dc-0444

I run one and I just use my autometer temp gauge inside the car and adjust the digital fan switch to dial in the temp I want to aim for.

for example on my car when my gauge hits 180 (probe for it is in manifold) I look at what the temp is on the digital fan switch ( fan switch probe is external in radiator fins) it may say 165 deg.

That gives me a guide actual water temp and what my fan switch temp probe is at then I just adjust it so my fans only turn on when my gauge inside hits 180 and will turn off when below that temp you can also have one fan come on at a set temp and the second at another temp

I rate those switch's very highly only down side is they are some what ugly but you can hide it as long as you can see the screen and get to the buttons for adjustments.

One last question when you went for your short drive and it ran at 195 dose it come back down to 180 185 when you stop and let it idle for a min or 2?
that is a good way to tell if you have enough fan and radiator now if it can pull the temp back down to 180 fairly quickly your good if it can't or it takes more then a min or 2 then your current set up may be right on the edge   

[Stangman]

The controller is a good idea. I had one like that before I went with what I have.  It was my first ride I still have to put a thermostat in but I’m thinking I want to get the cooling system soon. It does cool down after a few minutes last year after I got car squared away it was good 95 percent of the time unless I got stuck in traffic on a hot day.

[My427stang]

Chrysler 440 thermostats are 2.5 inches and readily available, at 2.5 inches OD, and available in 160 or 180.  I use the 180 style all the time for the big FE housing

[Stangman]

Wanted to try a 170 but been using 180 forever. Tried a 160 but then fan is always on. Gonna get cooling system and will post my results..

[Falcon67]

I would only add that 195 is not "hot" and that the higher water temp will transfer more heat out of the engine and the temp differential makes the radiator work better, especially if it's aluminum.  Aluminum dual core radiator and electric fans - I'd run nothing under 195 as a thermostat.  Even my race cars run a 180 because it way easier to control staging temp and keep the engine at an even temp over all with the hotter fluid.  That includes running on both gas and methanol. 

[Stangman]

It is an aluminum 2 row 1 1/4 inch tubes. It doesn’t run hot but I want to be able to drive my car anytime I want. As is that can’t happen. If I am in traffic on a really hot day it would keep creeping and eventually it would overheat. I won’t let it because I would pull over in time. Normally on really hot days I just don’t drive it besides it’s not a pleasant ride in that kind of heat. But if I’m going to a car show or something like that and it’s hot out and I’m on a line I would like it to not overheat. I do normally run a 180 thermostat but wanted to try a 170. It really was just a thought. If I could keep it 5 to 10 degrees cooler I could better gauge the temperature if I’m on some sort of line.

[jmlay]

If the system does not have the capacity a lower thermostat would only delay the inevitable.

What temp do you consider overheating? What is the highest temp you have see?