I have used a couple of spots of sealer to hold the stat in place, but
normally what I did was use the sealer to hold the gasket to the elbow
instead of the block- that always worked well.
If the bottom bolt is still that hard to run in, I'd do like Kevin said and
chase those threads first. You have nothing to lose by doing it, and you may
save yourself some unnecessary work down the road.
"stevie" <email@example.com> wrote in message news:wDh3e.firstname.lastname@example.org...
> I'm going to jump off a bridge.
> I reinstalled thermostat. The bottom bolt seemed to go in OK-I do not
> believe it is cross threaded, even though it is somewhat harder to turn.
> seems to tighten OK.
> I think what has happened, both times, is that the tstat does not stay in
> the indentation of the elbow but drops a little and creates an opening
> between elbow and engine. This happens when I reinstall the elbow with
> thermostat. The water leaks now, even with the engine off. So I'm pretty
> sure I haven't got a good seal. I am using sealant and new gasket.
> Can anyone suggest how to hold the tstat in place while reinstalling? I
> have Chilton manual . It says turn tstat clockwise to anchor in the
> but I don't see any way to anchor that by giving it a twist. The Autozone
> how-to site says the same thing (it's a reprint of Chilton).
> In addition, I am placing gasket on the engine (using sealant) and placing
> tstat in the elbow, which is how indicated in the Chilton. Is this
> One of the biggest problems is accessing the tstat. I have been removing
> the AC bracket, radiator, and fan. This just takes some time.
> The Autozone site shows pictures of someone removing the bottom bolt, with
> another hand near the tstat. Whoever is in the picture must have a right
> arm at least 4 foot long. Anyway, the picture is an '83 302 V8, which
> about the same as mine.
> Any suggestion would be appreciated.
> "The OTHER Kevin in San Diego" <skiddz "AT" adelphia "DOT" net> wrote in
> message news:email@example.com...
> On Thu, 31 Mar 2005 17:23:36 GMT, Stephen <firstname.lastname@example.org>
>>Don't do anything without at least chasing the threads out with a proper
>>sized tap. Everytime you screw that bolt in you are doing more damage
>>to the threads. If it is badly cross threaded, you will need to drill
>>the hole out and put in a heli-coil. Even this is not a big deal and it
>>is a permanent fix.
>>There is very holding strength in a cross threaded hole. You don't want
>>to be springing a leak some day far from home.
>>Stephen --> Sprung a few leaks in my time...
> I'm assuming the difficulty in getting the bolt in was/is due to crap
> in the hole.. If there's a bunch of junk in the hole, the bolt is
> going to try to compress it and that material has nowhere to go.
> Since this is the lower bolt on a thermostat housing, it's possible
> some coolant wicked into the hole. Fluids don't compress and trying
> to run a bolt into a hole in that instance will prevent it from
> seating all the way and it will be more difficult to turn.
> Blow the hole out and try again. If it's still difficult, then by all
> means, chase the threads.