I know a lot of racers run with no thermostat, but my car serves double duty, so I want it to be somewhat streetable. I want to know if anybody has run his/her car on the street without a thermostat and what they experienced.

 

No thermostat.... You have open a can of worms......

If racing I would run a factory themostat, unless the outside temperature is running above 100-F during the summer.

Why run a t-stat.... well it gets you engine up to normal operating temperature quickly, you will have a heater when it cold outside..

Have a good fresh radiator and you should not have any cooling problem.

John

 

I run No thermostat with no problem here in South Florida. I do have the main "hole" plugged though.

 

why run no thermo thou, is there any need for it?

 

You don't run a thermostat to eliminate the risk of it sticking closed. I've been in two cars (neither was an RX-7) that overheated because of a stuck thermostats. In the second case, it caused engine damage (warped head). This failure was relatively common "back in the day".

 

Yeah I had one stick on my '84 Mercury wagon, not a good thing, but i caught it in time, before killin teh motor..

 

It's not really an excuse these days with failsafe thermostats (Tridon thermostats prefaced with the "FS" part code). There is no advantage whatsoever to running any engine without a thermostat, and many disadvantages including increased fuel consumption and engine wear. Mazda spent a lot of money to come to the conclusion that they're necessary, I'm inclined to believe them.

 

What, exactly, does a failsafe thermostat have that makes it safe from failing. Also, which brands besides Tridon have this sort of design?

 

i'm running no thermostat and no problem at all.. just longer to warm up

sees street driving and highway

but i was thinking about putting a thermostat, but cutting out the bridge that regulates the flow of the coolant/water.. so as to avoid future problems that i might not be able to check early

at least there's some small restriction and coolant/water to evaporate, which is good... rather than running no thermostat and no space for the coolant to evaporate

 

just had one stick...screw em some thermostats

 

I drove my street car for over 200,000 miles no problems, EVER.

I ran my Pro7 race car for 3 seasons in except during the very hot summer months, with no problems.

Why, because I service my cooling system annually, change the factory t-stat every other year.

Not to run a thermostat is your choice, although there are stories of them failing, it is always a posibility.

Are you going to stop using the OMP cause it could fail? Pre-mixing for a street car is a waste.

A properly maintain car can easily last 200,000 miles, but part failure is always a risk. Driving your car on a public street is huge risk of getting in a accident, so why drive at all.

John