encouraging news with radical approach - blown headgasket

@TMR-JWAP I didn't mean to suggest that someone run their car without a radiator cap in place. It was reported that the EVANS runs at very low pressure. I just checked and pure ethylene glycol boils at 386.6 F or almost 200 C (197 C more specifically). There is little surprise that at 95 + % ethylene glycol (EVANS) that the system will not build up much pressure. The fact that it has poor heat transfer properties (hence coolant is mixed 50/50 with water) also bolsters that. kobear18's goal is to keep the engine running warmer and maybe this will help allow that. I was just answering what was brought up by someone else.

Yeah we definitely do what we have to do. If I wanna get to drive a Porsche around sometimes I gotta do what keeps the wife happy....

REVVL V+ 5G ?

 

That's odd, the ice car's I've had that had no thermostats always ran cooler. Maybe I just got lucky and they didn't have alternate flow paths.

If coolant goes through the radiator too quickly and can't get cooled down, wouldn't the coolant also flow through the engine too quickly so it doesn't get heated up? Something to think about. Maybe there's something else going on with those cars that overheat when no thermostat is installed.

 

Without a thermostat, the coolant flows continuously. With the thermostat,
it stops the flow, or restricts it, around the block it gets hot, then the thermostat opens and it
flows through the radiator to cool it down.
The thermostat opens and closes to keep the coolant at the optimal temperature so the engine
runs at it's most efficient.

 

I am not one who follows pulse and glide. I am slow, (not necessarily slow but I'm not flooring it), and steady. I find that I usually end my trips with 1 to 2 empty bars at the top of the HV battery meter. The car will use the battery when I am in traffic, stop and go, or at parking lot speeds.

REVVL V+ 5G ?

 

I'm just putting stuff out there to try to help open minds. I'm pretty sure I have a grasp on cooling systems. Not all thermostats are a single flow restriction in a single path which may or may not be directly to a radiator. Alternate flow paths can be the death of an engine when they are misunderstood. Google 351 Cleveland flow restrictor for a good example. Most cars that overheat when sitting still are victims of a failed fan which doesn't create adequate air flow through the radiator or improper shrouding which allows heated air to recirculate back to the front of the car immediately after it passes through the radiator, where it is then pulled back through the radiator again, each time being a less efficient heat sink.

My info is based on ........other stuff

 

With Evans you're running a zero pressure system your pressure cap is removed and you put a cap that does not have a spring in the top of it and creates a zero pressure system not 10 lb not 5 lb 0 lb that's Evans that's that stinky 18-wheeler cooling is what I call it that's where it's been used most of its life the car people got a hold of it in the mid-90s and I've used it in a couple Toyota celica's w 4tgte engines. Group A spec

SM-A715F ?

 

The water has to have some dwell time in the radiator to shed its heat the way that's done is with the thermostat or a restrictor plate it slows the water down so it dwells a little in the radiator with no restrictor or no thermostat The water runs round and round like an F1 car on the track The water is just flying through there it can't shed the heat that is constantly getting into the coolant water mixture because it won't dwell in the radiator where the air can fly across it and remove the heat is my understanding of the process if you use Evan's coolant you use a different radiator cap with zero pressure it's right there in Evan's literature I've run this in a couple 4T engines

SM-A715F ?

 

You should probably find out WHY it's overheating. You are dealing with symtems, not the cause.

 

You might want Red Line WATERWETTER to help prevent corrosion. (I just checked and it notes "no ethylene glycol".



REVVL V+ 5G ?

 

In my other equip I use robertshaw balanced stat. Seems to work ok . I gotta 13 I could play all these games with . Well could've with no compression on No 2 now me thinks pointless

SM-A715F ?

 

sooo,,,, you put in a cheap thermostadt and aren't happy with how it works....
Wow,, I'm surprised....
Perhaps spend a few dollars more and put in a good Toyota thermostat....