Overcooling

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12-12-2007, 12:39 PM

#21

the_supernerd

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Quote:

Originally Posted by thook

Okay. Well, I'll look at my NAPA thermo when I change the coolant (soon) and let you know. I may wind up having to just live with the nature of the beast.....for the design reasons you have stated. You may be right. Sounds plausible, anyway...

One thing has my concern, though. You said the OEM completely shut the water off. After having read a few info pages recently about how the temp gauge overshoot happens (22RE), this kind of function would seem to produce the overshoot result. I had thought of either buying a dual stage stat, but the cost...ya know? So, I decided I'd just drill a little hole instead. Well..hehe...it seems I'd be back to square one with the slow-to-heat dilemma. I dunno...maybe a little hole won't allow as much coolant by as thermo with no inside seal. ??? I guess I'll just have to find out!

I would try it without drilling the hole in it first, since it is easier to drill it later than to undrill it

. I read that link and one thing makes me wonder about that description of why overshoot happens. The temp gauge sending unit is just below the thermostat in the engine, so if the water is cold enough to shut the thermostat, then the temp gauge should be reading a cold temp. I could be wrong about that, but it makes sense to me. I have the regular one in my truck with no holes drilled in it and I do not have any over heating problems. The dealer once told me that the lack of a bypass hose was a problem with the early engines, like the 18RCs or the 8RCs, but I cannot verify that.