Thermostat fail safe
#1
Pro
Thread Starter
Thermostat fail safe
Hi all;
Installing a new radiator and would like to replace my stat with one that fails in the open position. I did a search and nothing came up . does anyone know of a particular brand that is reliable and where to purchase one. Trying to avoid the off shore parts. Thanks.
Car is '73 350
Installing a new radiator and would like to replace my stat with one that fails in the open position. I did a search and nothing came up . does anyone know of a particular brand that is reliable and where to purchase one. Trying to avoid the off shore parts. Thanks.
Car is '73 350
Last edited by tpfarm; 05-21-2017 at 09:54 AM. Reason: more info
#2
Advanced
Fail Safe thermostats
Probably nothing but off-shore available. Oreilly has them in several ranges. They will lock open too soon. Get extra gaskets.
#3
Thermostats normally fail closed due to the fact they are closed when the engine is cold (ironically my two dead thermostats in 36 years/21 cars, have both failed open).
I started drilling a small bypass hole in thermostats in the early 90s if it doesn't have one already from factory. Saw it on a Mazda I was working on at the time and thought it was a good idea. Google Images "thermostat bypass hole"
I started drilling a small bypass hole in thermostats in the early 90s if it doesn't have one already from factory. Saw it on a Mazda I was working on at the time and thought it was a good idea. Google Images "thermostat bypass hole"
Last edited by Dynra Rockets; 05-21-2017 at 06:20 AM.
#4
Race Director
YEP..I drill a small hole in the thermostat also....and have been doing it long before it seems to be a common practice from some auto manufacturers.
I have had ONE of the 'fail safe' thermostats from O'Reillys fail and not do its job...so I do not use them any longer....that is why you have a temp gauge....to keep an eye on it.
DUB
I have had ONE of the 'fail safe' thermostats from O'Reillys fail and not do its job...so I do not use them any longer....that is why you have a temp gauge....to keep an eye on it.
DUB
#6
Le Mans Master
Save your $$$$$
I had one of those t-stats go bad on me last year. It was just like any other t-stat would fail.
I had one of those t-stats go bad on me last year. It was just like any other t-stat would fail.
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tpfarm (05-22-2017)
#7
Team Owner
I cut the center out of my T-Stat
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tpfarm (05-22-2017)
#8
Race Director
I can agree with that. As long as the end result is doing its job and the temps are not skyrocketing....it does not matter.
I have used what I have shown in the photo below in some unique applications and often times they may need to be changed from a 'summer time' set-up to a 'winter time' set-up due to the owner want the heater to put off good heat.
DUB
I have used what I have shown in the photo below in some unique applications and often times they may need to be changed from a 'summer time' set-up to a 'winter time' set-up due to the owner want the heater to put off good heat.
DUB
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tpfarm (05-22-2017)
#9
Le Mans Master
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My dad showed me this a long time ago, right/wrong ? Cant say but it sure does make it easier to evacuate the air from the Vetts cooling system.
Last edited by Mod75; 05-22-2017 at 10:39 PM.
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tpfarm (05-22-2017)
#10
Team Owner
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tpfarm (05-22-2017)
#11
Race Director
DUB