parts needed for thermostat change?

[pascuab]

Went into my auto parts store to pick up a 180 thermostat and a housing today, the guy also asked me if i needed a thermostat gasket. From the tutorials and searching i did on here and other sites, it doesn't look like there is a gasket in there other than the o-ring on the housing. can anyone confirm this and let me know if there are any othe parts that i need?

thanks

 

[1KWIKSIX]

No gasket required, only thermostat. Might want to grab a new "O" ring which seals the thermostat / rad hose housing. If you've never changed it before.....you might consider having a replacement housing as you will most likely destroy yours getting it off, if it is the original tin /metal unit. There are cast units or billet, either one works well....just might wanna have these on hand in case.

 

[pascuab]

got it, thanks. so the thermostat fits in the hole, housing right over it and the foot holding everything in place. doesnt seem like a very good seal beween the thermostat and the housing, but i guess under some pressure, the thin metal outer edge of the thermostat will fit against it pretty tight.
i think the new housing i bought came with the o-ring you're talking about.

 

[1KWIKSIX]

Your new housing should have a new "O" ring on it. Be sure to apply some lube or vaseline to the "O" ring prior to installing the housing. It can rip or tear on insertion.

 

[whitehot1]

I always put a small bead of permatex hi-temp rtv around the o-ring to help ensure there is not going to be any leaks once it's all back together. This has worked for many years without any problems or any leaks and i change the thermostat twice a year for summer and winter months. This may seem to be over doing it but it beats having to do the job twice from having a leak.

If you do use rtv make sure it's not The Right Stuff or Ultra Black because you may never get the housing off again.

 

[pascuab]

thanks