Thermostat and Thermostat housing and coupling

[Corvette95]

I found this one on ebay, says it is new, box looks rough....

[A26B]

Originally Posted by Corvette95

I read the thread, what is special about the stant other than the two cut outs, I saw the Delco one you bought, why was that not usable? I haven't located a Stant. Here is my OE one...

If you don't find a correct one, you could just check the original one. Put it in a small saucepan of water, using a meat thermometer, turn the heat on medium & see if yours opens fully at 180~185f.

[A26B]

Originally Posted by Corvette95

I found this one on ebay, says it is new, box looks rough....

I wouldn't be concerned with the box. Stat looks right.

[Ccmano]

Originally Posted by Corvette95

I read the thread, what is special about the stant other than the two cut outs, I saw the Delco one you bought, why was that not usable? I haven't located a Stant. Here is my OE one...

I had the same question you did. I was cautioned by people who know more than I including Jerry and Marc Haibeck. As I understand it the lower plate is the bypass valve. The cuts allow hot coolant to the sensor on the thermostat allowing it to open at the proper time. The attached article by Marc explains how it works.
H


http://www.zr1specialist.com/HAT%20W...thermostat.htm

[Corvette95]

There is another thermostat on Ebay that looks to be a defective unit per Marc's write up.... look at the spring...
https://www.ebay.com/itm/Engine-Cool...wAAOSwGIZeZASk

[Jitse]

Another way to fix the "weak" heat hose connectors problem can be done by welding AN fittings to the thermostat housing and using Jiffi-tite quick connectors.
I changed out the hoses too, 30 year old rubber.... reliability
Modified to 10 AN and 12 AN hose size.

used 2x heater core to radiator surge tank hoses, one hose modified to connect with a 10 AN hose to barb adapter ( 5/8").

1x weld fittings 10AN and 1x 12AN aluminium for on the housing.

1x Jiffi-tite 10 AN quick connector 1 x Jiffi-tite 12 AN quick connector, do not forget to order the female part which screws on the weld AN fittings.

And when finished you can have a brand new heater hose/ to thermostat housing assembly, but if you like te keep everything Vin correct, this is not the way to go.

Regards, Jitse

[Jitse]

Some more pictures:

[Corvette95]

Thanks, I have seen your write up on that before. If the stock line doesn't hold ( I am working on it as we speak - with an other Registry member that is sourcing some donor parts) that will be my go to. I may reach out if that is the case. I am trying something new I haven't done before, I am completing a 12 hour anti-freeze low temp soak of the thermostat housing on the stove in a super large pot for cleaning. Have no idea if is a hoax or not, if it doesn't clean up, going to have it powder coated too.

[A26B]

Very nice job Jitse!!

[secondchance]

Originally Posted by Corvette95

I am completing a 12 hour anti-freeze low temp soak of the thermostat housing on the stove in a super large pot for cleaning. Have no idea if is a hoax or not, if it doesn't clean up, going to have it powder coated too.

If you are trying to make thermostat housing look clean, you might try aluminum wheel cleaner spray and sunlight followed by a water rinse.