Thread: 327 What's your average water temp?

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Running between 180-200 but occasionally I get close to 230.. worried me a bit, do you think this is because when I replaced my water pump I added plain ol' water for the day? Maybe it boils faster/easier than anit-freeze and water mix? i will be mixing and trying again. What is average? I have a new radiator and an electric fan running.

1965 Impala SS w/ 327

Originally Posted by ltidwell

Running between 180-200 but occasionally I get close to 230.. worried me a bit, do you think this is because when I replaced my water pump I added plain ol' water for the day? Maybe it boils faster/easier than anit-freeze and water mix? i will be mixing and trying again. What is average? I have a new radiator and an electric fan running.

1965 Impala SS w/ 327

OF COURSE IT WILL RUN SOME WHAT HOTTER AT IDLE.... AND I THINK YOU SHOULD RE- EVALUATE THE TEMPERTURE AFTER YOU PUT THE CORRECT FLUIDS IN.YOU PUT PLEASE HELP ME TOO:IM TRING TO BUILD ME A HOMEMADE FAN SHROUD FOR MY S 10 V8 TRUCK ANY ONE HAVE ANY IDEALS?

your water shouldn't affect that, if u have str8 water that boils at 212* F, and then u add a 7# rad cap ( standard for most anything older ), for every 1 PSI of preassure, the boiling point raises by 3* F so that's 21* more so your looking at 233* F, which if you get to 230* F as is, your almost overheating, because when the coolant boils, that's what overheating is. ither change all hoses and go with a 10-13# cap or get a cooler thermostat. if you have a 180* stat, it will be fully open at 195*, a 160 will be open at 185*

Well I changed the fluids today and found that it made a "little" difference. Around town after a half an hour or so she runs about 210-220, on the freeway after about 10 minutes she was down to 175-180. This tells me not enough air is getting through, but I am not sure what i can do about it. I have an electric fan on my radiator, how much of a temp difference would I see if I add a shroud? Because I live in the DC area I need to be able to sit in a 30-45min traffic jam without overheating, any ideas?

Thanks in advance,

Lincoln

a shroud makes a big difference.... also depends on how many CFM/RPMs your electric fan puts out....

Originally Posted by ltidwell

Well I changed the fluids today and found that it made a "little" difference. Around town after a half an hour or so she runs about 210-220, on the freeway after about 10 minutes she was down to 175-180. This tells me not enough air is getting through, but I am not sure what i can do about it. I have an electric fan on my radiator, how much of a temp difference would I see if I add a shroud? Because I live in the DC area I need to be able to sit in a 30-45min traffic jam without overheating, any ideas?

Thanks in advance,

Lincoln

I would be curious what cfm the fan is pulling or maybe the amp draw, I have a 327 with a griffin alum. rad and dual spall 11" fans 3000 cfm and runs very cool. A lot of electric fans are over stated as to true cfm my dual spal fans draw about 24 amps It probably take around 18amps to get 2700 cfm out of a 16 in electric fan. You may not be moving enough air Ed ke6bnl

If I'm not mistaken, antifreeze is just that, antifreeze (and anticorrosives). Water actually disipates heat better than antifreeze.

no antifreeze dissapates heat better than water, but only to a certain point, as long as you've got a proper mix it will... the way to really make your cooling system cool better though is put water wetter in instead of antifreeze, i did it on my car and she dropped 20 degrees on running temp

I run 50/50 af/h20 with hi-ouput water pump, a 10" pusher (always on), and a 16" puller electric (thermostaticially controled) on my 34 (350 ci/350hp) and it normally runs in warm weather at about 200. No fancy radiator, aluminum or otherwise, not even a big name unit like Walker or Griffin, etc., just an old radiator with trans cooler in the bottom. I can sit (had to recently) and idle for an hour and it goes no higher than 210. Only shroud is that which is build around the puller, not a full coverage shroud. So far for the past 17 years very few water related problems. Hope it stays that way.

Originally Posted by thesals

no antifreeze dissapates heat better than water, but only to a certain point, as long as you've got a proper mix it will... the way to really make your cooling system cool better though is put water wetter in instead of antifreeze, i did it on my car and she dropped 20 degrees on running temp

Well I am going to try the water wetter first.. for $7.95 a bottle it seems worth a try. Next I will try a fan pushing more cfm, then a shroud.

Sound about right? I need to do something, unless I am crusing at 55' she gets hot (210-220) quickly (30-35 min around town)... no traffic, just regular lights.

also what intake and headers are you running? and base and total timing

I have a dual set of flex-a-lite pushers fans mounted on front of my radiator. Cruising the motor gets no hotter than 180, but ideling it starts to creep up to 200 and that where I have the fans set to go on. They draw 22 amps and run for about 30 seconds to bring the temperature back down to 180. Works great.

Well.. looks like I will be needing to try something else. The Water wetter did help a bit, just takes longer to overheat now than before. I am going to try a new 175 thermostat, if that doesnt fix the problem a new electric fan, then a shroud. Thanks for the help guys. If you can think of anything else let me know.

~Lincoln

From reading your thread it looks like you have an airflow problem rather than a coolant or pump problem, rather than muck arround with electric fans see if you can get a belt driven fan and shroud in there

You could get some of that stuff that you dump in the radiator. I think its alcohol and something else mixed together. It's supposed to lower the temperature a little bit. I used some in my V8 S10 because I always had problems with overheating when sitting. It worked pretty well I think it dropped the highest temp I had like 10 or 15 degrees.