do i even need a thermostat?
 

i have no heat no ac everything i can think of has been deleated. is there any good or bad to removing the thermostat. or is it even possible .. im clueless to this theory but someone mentioned it so i figured i would ask.

I'm failing to find the correlation between removing Heat/AC...and the need for a thermostat.

The person who said you don't need a thermostat on a street car is probably an idiot, I wouldn't listen to them.

The thermostat has nothing to do with your in-cabin climate control, it is used to help actuate/regulate coolant flow between the engine block and radiator (aka - stuck closed and your engine fries, stuck open and it's a bitch to get up to operating temps).

I was recently having overheating issues and was replacing one thing after the other. Bought a brand new fluidyne and that didnt help, got a remedy waterpump and that didnt help. took my thermostat out and that helped.. hmmm.. so i tested it in water and it was still openeing slow. SO i ordered a new one, but while i wait i ran the car without one. Temps did take a while to get to normal, but they were staedy at 85c. I will see how much change happens when i put the new thermostat in.

A thermostat is used to maintain a certain operating temperature of the engine. With removing the thermostat, yes you will see lower coolant temps. And why is this? Because now the coolant may not be having enough time to pick up the excess heat from the engine. Even race cars that run no actual thermostat run some sort of flow restrictor.

when you remove the thermostat there is a bypass in the water pump that needs to be plugged. when the engine is cold the bypass is open so the water pump can pump water, and it bypasses the radiator.

when you just remove the thermostat, the bypass is open, so the water can bypass the radiator, which is bad.

really a street car should have a thermostat, running too cold is bad too.

stat
 

You are correct!people get fooled by the fact that the coolant guage or standalone is showing that the car is running cooler when in fact is not!the stat is there 2 slow down the coolant flow so this way the heat is carried away by the coolant,when the stat is not there coolant moves faster and it wont do is job,take a heat gun and aim it 2 a motor that is not running a stat and your see temps reaching 250 in minutes,been there done that.Race car do have plate in place of the stat in order to slow down coolant flow.

When I first purchased my car, the person before me removed the thermostat. The car ran hotter without the thermostat in. I figured it out and dropped a new t-stat in and it helped the car run cooler.

Then I dropped in dual oil coolers and that helped a ton as well....holey moley. Then I ducted everything.

Not much air up here in CO to cool things off with. I get to work with 25% less air which means I have 50HP less heat removal going 60mph.

Um... you have less AIR?? I was under the impression that the amount of air stayed the same, it was just the amount of oxygen in the air that thinned out.

The molecules of air actually get less dense as you get higher in altitude until you leave the atmosphere and you are in space.

The air pressure drops......which means there is less air which means less oxygen.

Our 40 degree days have way less air here than your 90 degree days:)


check out the attached charts.

anybody have a picture of the bypass that needs to be plugged if you remove the thermostat?

The extra valve face on the bottom of the thermostat covers the the bypass hole as it opens.

One observation that is little understood.
When your cap pressure is, say, 15 psi. this is actually the pressure in the radiator.

The actual pressure in the block (because of the thermostat's carefully selected size restriction) goes to over 40 psi and
subsequently raises the boiling point 2*/lb, or 80*F.

My pump starts to cavitate at about 44 psi.
Barry