Shade tree meets white coat ideal conditions:

Sometimes the best “premoâ€￾ part is not readily available locally, or the job at hand has to get done asap., will often dictate what is used. In other words, one works with what he has at hand. In my case, nearest part store is ten miles distant, others with higher grade lines 12 - 15 miles. I’ll not drive the extra ten for a stinking thermostat when in a pickle.

With a non notched, or other wise non self bleeding thermostat that one often finds at his local auto parts supply, I still drill a small hole to aid in refilling cooling system. Without that bleed, it takes forever to get the head filled with coolant if thermostat has a good tight seal. Just don’t put the damn thing wrong way in…

Don’t tell me to leave out thermostat and fill head to bottom of its housing, fine advice for a non clean painted engine, but sucks for those of us trying to keep a clean machine. I just as soon keep the overflowing mess to the radiator area, not the front of and length of block.

If you use readily available colbalt or other drills rated for hardened steel, drilling stainless steel will not pose a problem. Goes through it like buddah.

Dan:
[quote]Quote:
[quote]And ALL manufacturers of poppet type thermostats must have missed Dan's opinion about the lack of different pressures in a cooling system[/quote]!


An imaginative assertion, but not one I'm inclined to spend any effort or time trying to decipher.[/quote]

Than don’t. It’s easy, water pump exerts constant pressure in direction of flow, and slightly lower pressure or vacuum on suction side of pump within a closed loop system cooling system. This takes place with or without an open thermostat, and is why coolant is circulated faster than by convection alone.

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67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC

what the hey !!!!! just fill block take out rad,fan water pump ....only goona run for a minute,maybe two for a 12 sec pass

hehehehe

keep on roddin'

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Dan, I interpreted wjajr's response as a comment/correction to your attack on what I wrote.

And when one of the very points of making a balanced-sleeve thermostat is that the design prevents the thermostat from being influenced from differences in pressure:
Come on Dan! Is this your way of presenting what you claim to be correct information?

This is starting to get real stupid.

Olaf.

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Aspenized

Just picked up a 45358 superstat. This so called premium thermostat that in dans description should have a jiggle pin or a notch. It in fact does not. I vaguely remember this with the original thermostat I installed. I believe it's failing (very irratic overheating and temp fluctuating) so I picked up a new one. Would you suggest drilling the hole? I belive I did last time aswell.

Some engines are prone to air entrapment, and in those applications a jiggle pin or bleed hole is necessary. The Slant-6 is not such an engine. Don't worry about it -- don't drill it -- just go ahead and install it.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

If you look closely, there's usually a ting notch in the thermostat that works as the air escape...........

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Hey krytellan,

Mopar mechanic with http://www.buttondodge.com/ here.

I definitely agree with Olaf. I haven't ever seen a thermostat in upside down but I have heard about it. The symptom was that the car took a long time to warm up! As Olaf explained, the heat would eventually get to the mechanism but it will take longer.

Best, Thomas

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SlantGeek

Do not drill a hole in your thermostat. It will not help, only hinder. Use a good quality thermostat of the optimal temperature rating (see here), install it right way round and rightside-up (if applicable), and call it good. There are some engines with cooling systems it's very difficult to bleed all the air from, that require thermostats with air bleeds, special air bleed procedures after coolant drain and fill, etc. The Slant-6 is not one of these engines.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Not to hijack the thread, but SlantGeek: who are you? In each post you claim to be a mechanic at some Mopar dealer, but a different one each time. Are you being paid to advertise for them?

One sunny day a young bull and an old bull were walking down a country lane when they spotted a herd of cows.

The young bull said to the old bull - "hey look at all those cows, lets race over there and #### a few of them". The old bull wisely replied - "lets walk quitely over there and we will @@@@ the lot".