CSF All Aluminum Performance Radiator For our trucks FINALLY!!!

This works with the URD thermostat adapter?

 

Yessir! I swapped the gasket that comes with it with the one I removed but yes its plug and play.

 

Awesome

 

Mishimoto has 155* one that fits many of the Toyota 4 cylinder engines, but not sure they’re the same size.

 

I dont think I would try that cold. You will get a cel below 168°.
Keep in mind @HolyHandGrenade, normally fan keep thing cool while stopped and slow speeds. Airflow keeps things cool at high speeds. The thermostat will open at a certain temp and once fully open relies on radiator to provide cool coolant. The larger radiator is larger and more efficient than stock but if you dont have airflow to transfer the radiator heat then you will still have high temps.
Everything blocking airflow restricts the radiators capacity to cool. Intercooler, condenser, horns, bumpers, winches, etc. The more you have obstructing airflow the hotter your truck will potentially run.

 

Resistors

 

Everything I've read is that, in general, cooling systems should run in the 180-190 degree mark for optimal performance, wear, and efficiency. Any lower and you get inconsistent cylinder and ring wear (especially on the cylinder, usually number one, that first receives the coolant from the radiator) and your oil doesn't get warm enough to boil off contaminants (water), again increasing wear. No bearing, especially not plain bearings play well with water.

I would be pretty happy if my truck ran at 185 all day. Problem is, my 2014 DCLB doesn't but a lower temp thermostat is only going to mask, not truly fix, the problem. Only a more efficient/bigger radiator will do that.

As per the jiggle valve, the 5VZ-FE runs the jiggle at 6 o'clock. At 12 0'clock, I saw 15 degree coolant increases in my 2000 Tacoma. Since the 1GR-FE thermostat comes preinstalled in a housing, I didn't even check it when I installed that and a new water pump in my wife's 06 last week. Hmmmm...

 

If a 160 thermo gets you to 185, then a 155 could get you to 180.

 

Your overall coolant with be at 180, but cylinder number 1 is gonna get hit with 160 degree coolant and on a long enough timeline that might be a problem

 

I can understand that but wouldnt it basically be the same in the dead of winter going down the freeway radiator outlet temp may be 50° then stock thermostat opens at 180° you will still have a similar temp difference between thermostat and the temp sensor after cylinders 5 and 6 as you would with a colder thermostat.
Oil will get plenty hot enough at 175° to remove moisture.

Good intelligent conversation though, I love it!

 

I don’t see that as a problem. I’m sure all of my other mods will kill this engine long before what you’re suggesting will.

 

Probably true, then we build it stronger!

 

Seems Gadget, before he formed the URD site, had a really good article on this that I'm trying to find. I will keep looking and edit post here.

 

This reminds me a of a recent thread.

https://www.tacomaworld.com/threads/your-experience-with-spacers.566958/

 

Here's a start before the flaming really starts:

http://www.tuneruniversity.com/blog/2012/04/low-temp-thermostats-whats-the-advantage/

Clif Notes:
The biggest misunderstanding about thermostats is that people believe they make the engine run cooler. They don't necessarily do that. The cooling system and load on the engine determines how hot the engine gets, the thermostat fully open will still be the mercy of the coolant system's ability to remove heat.

. Most engine wear occurs when the engine is cold, once it's warmed up there is very little wear in a healthy engine. Thus, we definitely want to run a thermostat to allow the engine to warm up as quickly as possible until it reaches our desired and designed operating temperature.

So what then would a low temperature thermostat accomplish? Not much.

Around town and in the pits, you warm up faster than no thermostat at all, but you will take a while to warm up from 160 to 180 for example. You will get there however, especially on warm days, the only difference is you're trying to cool the car off as it's trying to warm up. As a mater of fact, if you sit there at idle, the temp will go up until the radiator fans kick on since radiators are poor cooling devices without air flow. In other words, sitting still, the thermostat opening temperature doesn't matter much at all.

 

Thou shalt not mod

 

...without doing some careful research first

 

Ok