Thermostat replacement

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cruiser

cruiser

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I'll be replacing the thermostat in my 1974 Duster 225. I've been running a Stant super stat 195 degree, which seems to be failing now. What 195 thermostat worked for you? And just to be sure, the pointy end goes toward the radiator, the squared bottom end toward the cylinder head, right? Thanks.
 
Yes on the pointy end. Stant used to be good. May be not any more. Take a look at Robert Shaw if they are still around. Test any one you buy in a pan of water on the stove with a thermometer before installing it.
 
It's funny that Chrysler had a recommended thermostat style, but they won't fit in the slant 6 unless the thermostat hole is opened up a little bit. lol This is the style I run, but as mentioned, they will not fit without enlarging the hole. It doesn't take much at all, but it won't fit otherwise. I prefer the 160, but that's the 195 in the link, since that's what you mentioned.
www.stewartcomponents.com

High Performance 195 Degree 306 Thermostat - Stewart Components

Manufactured by Robert Shaw and modified by Stewart, these custom thermostats feature a balanced sleeve design and are designed for high flow, high RPM applications. Strongly recommended for any performance application. Refer to our Tech Tips page for information on which thermostat is right for...
www.stewartcomponents.com www.stewartcomponents.com
 
For the record...

I recently replaced my run of the mill Stant thermostat with a "High" flow thermostat same temp. Made no difference to my temp at speed where I was having concerns.


I was typing when RRR posted, that is the high flow T stat I used.



BTW MotoRad owns Stant and I think a few other companies
 
Dana67Dart said:
For the record...

I recently replaced my run of the mill Stant thermostat with a "High" flow thermostat same temp. Made no difference to my temp at speed where I was having concerns.


I was typing when RRR posted, that is the high flow T stat I used.



BTW MotoRad owns Stant and I think a few other companies
Click to expand...
Did you have to enlarge the hole? I have probably ten slant 6 heads and none of them would fit that type thermostat. It's real close. I could probably pound it in with a hammer. But then of course, the sides would be bound against the head and it would not open. lol
 
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