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Hey guys my friend has a 79 camaro z28 with a rebuilt 350 and a rv cam. When we run his car the water temp gets up to 210-240, and i was wondering is this the normal operating temp? And if so a what temp should we start to worry?

Have you gone through the cooling system check thermostat fan belt coolant, rad. cap??. 210 is not bad 240 your getting close the over heating I beleave at 260 you can cook your trans.
I just went back and looked How old is the rebuild.

Originally Posted by chevymotorhead

Hey guys my friend has a 79 camaro z28 with a rebuilt 350 and a rv cam. When we run his car the water temp gets up to 210-240, and i was wondering is this the normal operating temp? And if so a what temp should we start to worry?

if you have a 190 degree thermostat and if everything is right, it should run around 200 degrees with a manuel fan. the late model cars with elec. fans will come on around 220 and go off around 200. 240 is to hi.

hey guys thanks for the advice the car is running at 210 so i take it thats normal operating temp.

I have an electric fan and mine runs between 190 and 200.

Its is a good Idea to make sure the temp reading device is accurate. I have had a case where I thought I was running hot but the guage was off. Ed ke6bnl

Water temp guages can be off. A friend's gauge is off about 14 degrees, reads hi. Get guage accuracy checked. Running a/c with R134 will add 10- 15 degrees to your water temp at idle. R12 won't but not many systems using R12 anymore (except mine). 220 okay, 240 shouldn't happen unless there is a problem, like electric fans not kicking in, etc. If mine went to 240 I would shut it down. JMO.

the way i look at is is 212 is boiling, a cooling system is under pressure so it will be boiling before it reaches 212, i ususally run a 160 thermostat i can drive my galaxie around town at about 170-180 and when i get on the highway it never gets over 190 i just like to be way on the safe side, im paranoid about over heating

Originally Posted by tyler

the way i look at is is 212 is boiling, a cooling system is under pressure so it will be boiling before it reaches 212, i ususally run a 160 thermostat i can drive my galaxie around town at about 170-180 and when i get on the highway it never gets over 190 i just like to be way on the safe side, im paranoid about over heating

212 is boiling for water, not 50/50 coolant mix, right? Also, if I remember right, increasing the pressure increases the boiling point, which is why steam is so dangerous, because it is much hotter than water when it is released from it's high pressure environment.

Many vehicles today typically run in the 200-210 to support EFI (keeping sensors hot).

Originally Posted by tyler

the way i look at is is 212 is boiling, a cooling system is under pressure so it will be boiling before it reaches 212, i ususally run a 160 thermostat i can drive my galaxie around town at about 170-180 and when i get on the highway it never gets over 190 i just like to be way on the safe side, im paranoid about over heating

tyler, 180 thermostat in a factory EFI car, would make it run to rich. the computer would think the choke was on.

yes but none of the cars i work on have efi yes 212 is the bioling point of water im not sure about a 50/50 mix but im sure it would be slightly higher, also he is not working on an EFI car so he doesnt need to worry anbout any sensors he just needs to worry about keeing the motor cool

Originally Posted by tyler

yes but none of the cars i work on have efi yes 212 is the bioling point of water im not sure about a 50/50 mix but im sure it would be slightly higher, also he is not working on an EFI car so he doesnt need to worry anbout any sensors he just needs to worry about keeing the motor cool

just file it under something you learned today. you might own a efi car one day, and after you put that 160 degree thermostat in it to cool it down, and then it want run , you'll know why.

have you left the cap off while running to release any air bubbles? if you get a good flex fan and a 160-180 thermostat you shouldnt have to worry.

Originally Posted by lt1s10

just file it under something you learned today. you might own a efi car one day, and after you put that 160 degree thermostat in it to cool it down, and then it want run , you'll know why.

thanks that actually ended up being helpful today, my friend called me and he was having problems with his LS1 over heating, he was going to put a 160 thermostat in it and i explained to him what i had just learned from you guys. thanks
Tyler

Originally Posted by tyler

thanks that actually ended up being helpful today, my friend called me and he was having problems with his LS1 over heating, he was going to put a 160 thermostat in it and i explained to him what i had just learned from you guys. thanks
Tyler

thats good, and it would have made it to rich. you can use a colder thermostat, but you need to reprogram you computer to burn the extra fuel.