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Re: Is 210-220 too hot for 440 Big Block
[Re: moparrulzzz]
#749238
07/16/10 09:39 PM
07/16/10 09:39 PM
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Joined: Jun 2008
Posts: 137
Kenosha, WI wi/il border
BobN
OP
member
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OP
member
Joined: Jun 2008
Posts: 137
Kenosha, WI wi/il border
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Sorry -worked late
here is info
stock Iron 346 heads. had 3angle valve job
Mild 440,.040 over, RPM intake,Comp XE268 cam,
KB Hyper pistons . Mancini alumin water pump housing, Mopar hemi water pump,stock crank,
71 Mopar 3core 26"radiator, stock shroud,Mopar clutch fan. 180 thermostat,
dynod at just about 400 HP & 500 torque.
aftermarket cheap temp gauge could be off.
that is what I have been thinking.
Since radiator never pukes out.
I dont really want to go with aluminum rad or electric fans if I dont have too.
does drop to 199 -200 when moving but starts creeping when in traffic.
i was thinking of just letting it go and see if it over heats or not\I also take off out of traffic before is gets over 210 or higher.
what do you think?
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Re: Is 210-220 too hot for 440 Big Block
[Re: 68LAR]
#749241
07/19/10 04:03 PM
07/19/10 04:03 PM
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Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
Jeepmon
master
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master
Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
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Quote:
Not to start any arguments or anything, but how, or what determines "efficient operating temp."?
I've been using a 160* stat for over 40 years, with no adverse effects on the engine or oil. Why should I change if what I have works for me?  
I have to agree with the 160 philosophy... A stat does not regulate operating temperatures.. it only regulates when the water starts to circulate..
I run a 160 stat as I want my engine to run as cool as possible when racing.. but when driving on the street, the temp gauge will always sit at 180-ish..
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Re: Is 210-220 too hot for 440 Big Block
[Re: Jeepmon]
#749242
07/19/10 05:19 PM
07/19/10 05:19 PM
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Joined: Sep 2004
Posts: 1,226
Cookeville
Chilort
Will Work For Mopars
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Will Work For Mopars
Joined: Sep 2004
Posts: 1,226
Cookeville
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I'm running a lot too warm on these hot summer days in Georgia myself. Luckily I've got an old school mechanic on speed dial (my dad). I've been throwing parts at my problem with little success. I've tried different t-stats, water pumps, fan clutches, different fans, and external trans cooler, adding a shroud, etc. My dad pulled a few tricks out of his hat the other night that I need to look at still. I don't have any kind of rubber or metal flap/guard over the top of the front of the radiator. I don't know if this makes a difference at higher speeds but at lower speeds it could be allowing hot air to recirculate from the back side of the radiator to the front (though maybe it could be a problem at speed too). He also didn't make his view of the use of infrared thermometers in automotive cooling systems clear until after I bought one. In his view, unless you have actual probes in the outlet and inlet to the engine you really don't know squat. I think you know a little more than squat but he's a black/white kind of guy. If a cooling system is working properly, with a 180* t-stat the engine outlet temp should never be above 180*, simple as that. You start going cooler with the t-stats and then you need more heat transfer capabilities. 
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Re: Is 210-220 too hot for 440 Big Block
[Re: Jeepmon]
#749243
07/19/10 05:35 PM
07/19/10 05:35 PM
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Joined: Jan 2003
Posts: 3,575
The Netherlands
BigBlockMopar
master
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master
Joined: Jan 2003
Posts: 3,575
The Netherlands
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Quote:
A stat does not regulate operating temperatures.. it only regulates when the water starts to circulate..
Sorry but you might want to rethink what you typed there. A thermostat DOES regulate the coolant temp BY letting the water circulate at a set temperature.
I agree with the 160 degree stats aswell. I rather see 160 on the gauge then 190-200. Whenever the tempgauge goes north of 190 on hot days, I'm getting slightly worried if it might go any higher.
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Re: Is 210-220 too hot for 440 Big Block
[Re: BigBlockMopar]
#749245
07/24/10 11:50 AM
07/24/10 11:50 AM
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Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
Jeepmon
master
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master
Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
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Quote:
Quote:
A stat does not regulate operating temperatures.. it only regulates when the water starts to circulate..
Sorry but you might want to rethink what you typed there. A thermostat DOES regulate the coolant temp BY letting the water circulate at a set temperature.
I agree with the 160 degree stats aswell. I rather see 160 on the gauge then 190-200. Whenever the tempgauge goes north of 190 on hot days, I'm getting slightly worried if it might go any higher.
The key word there is "operating" temperature.. If your normal operating temperature is 185.. 195.. 205.. or whatever.. Once you reach that temperature, the stat will not make the motor cooler.. with the exception of being a flow restricter to help slow down the rate of water passing thru the radiator..
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Re: Is 210-220 too hot for 440 Big Block
[Re: Todd]
#749247
07/24/10 02:59 PM
07/24/10 02:59 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
I added a bottle of water wetter and dropped the temp 10*. JMO. 
that stuff works good. IO don't even use anti-freeze anymore.
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Re: Is 210-220 too hot for 440 Big Block
[Re: BigBlockMopar]
#749249
07/24/10 11:57 PM
07/24/10 11:57 PM
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Joined: Feb 2003
Posts: 10,198
Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,198
Someplace you aren't
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Quote:
Quote:
A stat does not regulate operating temperatures.. it only regulates when the water starts to circulate..
Sorry but you might want to rethink what you typed there. A thermostat DOES regulate the coolant temp BY letting the water circulate at a set temperature.
I agree with the 160 degree stats aswell. I rather see 160 on the gauge then 190-200. Whenever the tempgauge goes north of 190 on hot days, I'm getting slightly worried if it might go any higher.
I used to think the margin for error was worth it but I now like the 190 stat. If your system is set up correctly, it will not go over 200.
It was 100 here today and very high humidity and my car ever went over 200, at idle, around town low speed, or on the interstate hogging the hammer lane.
i don't even have a shroud of any kind either.
The oil now stays much cleaner, I'm certain that the engine sees less wear.
The cool underhood temps actually caused a lean condition for my carb. It is an AVS so the 3 step rods are hard to come by, 20 bucks a set and it is really just a shot in the dark on getting things right w/o a wide band. So the hotter stat brought things in line.
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