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Re: is 200 temp ok for 440 ?
[Re: mark7171]
#711675
05/31/10 03:53 PM
05/31/10 03:53 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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A 4th core in the radiator doesn't cool much, if any at all.
The first row gets nice cool air.
The second row gets warm air that picked up heat from the first row.
The third row gets hot air that picked up heat from the first two rows.
The fourth row gets air that is the same temperature as the water that's passing through it.
All a fourth row (and sometimes 3rd row) does is add capacity.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: is 200 temp ok for 440 ?
[Re: landon1]
#711677
05/31/10 05:33 PM
05/31/10 05:33 PM
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Joined: Oct 2003
Posts: 3,688
Alexandria,La.
BigTerry
master
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master
Joined: Oct 2003
Posts: 3,688
Alexandria,La.
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Quote:
i run about 200 or so with my 440 - always has, before and after rebuild. with a 190-195 thermostat, it makes sense
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Re: is 200 temp ok for 440 ?
[Re: Supercuda]
#711678
05/31/10 07:50 PM
05/31/10 07:50 PM
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Joined: Nov 2007
Posts: 13
Bellaire, Ohio
66cornet
member
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member
Joined: Nov 2007
Posts: 13
Bellaire, Ohio
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Quote:
[quote
Showing 200 on the gauge while on the highway is to be expected if you're running a 195 t-stat. Now if he was running a 180 t-stat and doing 200 on the highway, then I would say your cooling system does need some attention.
]I have the same problem. Trying to get some miles on new engine. I have a high volume alum waterpump, mancini alum rad, 195 stat. On short ride today engine was about 210-220 when I got home. Shut off engine and it started to run by itself, plenty hot.
I read where a high volume pump would keep the thremostat from opening. Anyone heard of this?
I didn't have any problem with it overheating on breaking with no stat. I don't have a shroud yet.
Any ideas?
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Re: is 200 temp ok for 440 ?
[Re: Lee446]
#711679
05/31/10 07:56 PM
05/31/10 07:56 PM
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Joined: Mar 2005
Posts: 2,060
Pendleton NY
terzmo
top fuel
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top fuel
Joined: Mar 2005
Posts: 2,060
Pendleton NY
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Quote:
It is a commom misconception that the fan and shroud do nothing at hiway speeds. This is untrue. At highway speed airflow tends to stall and get turbulent in the grill area, the fan, which is more efficient because it has a shroud, provides a low pressure area to pull the air through the radiator, instead of allowing it to spill out under the car and over the radiator yoke. Ask anyone who has ever towed on a grade at hiway speed and see if their temp started creeping up, then you hear the fan clutch engage and watch the temp come down. This would not happen if the fan did nothing at hiway speed.
IF the fan and shroud are so great at highway speeds,why does the temp on any car increase at slow speeds..This negitive air pocket at highway speeds is pure rubbish...stick your head out the window and spit forward and see if there is a negitive pocket to stop the snot from coming back.
Shroud was designed to help the fan capture and pull air through the rad at slow speeds....a clutch fan does zip at high RPM..it slips..like a clutch...at slower speeds it engages and does it work with the help of the shroud. Thats also why a fan is ideally placed half in/half out of a shroud for optimum efficiency. Slow speeds...fan helps cool...fast speeds..wind/mother nature does it's thing
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Re: is 200 temp ok for 440 ?
[Re: stumpy]
#711680
05/31/10 07:59 PM
05/31/10 07:59 PM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
Quote:
fan and shroud do zilch at highway speeds
not true. old wives tale.
SOUNDS like an ole' GRUMPY tale to me ...  
TRY the experiment YURRself ... remove the fan completely ...and drive-it at hwy speeds. I will BET that the water temp will be the same ...if NOT a touch lower.
YES .... the fan and shroud do DO lots at hwy speeds ... they cost POWER !! 
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Re: is 200 temp ok for 440 ?
[Re: Supercuda]
#711682
05/31/10 08:37 PM
05/31/10 08:37 PM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
Your thermostat only regulates the minimum temperature, not the maximum.
If an engine runs down the highway at 200 degrees with a 195 thermostat, then it will run down the highway at 200 degrees with a 160 thermostat. At best a lower rated thermostat will just delay the amount of time it takes to get to the system operating temperature.
No, if you're running a 160 stat and doing 200 degrees on the highway, all that means is your cooling system does not have the capacity to bring your temps down to t-stat level. If everything is working properly your cooling system should always be at the t-stat rating.
If you read 200 on the gauge with a 195 t-stat, that doesn't mean the cooling system is over its max cooling capacity, all that means is your gauge is not accurate to .0000000%. Look at where the sender is placed, gauge accuracy variation and how the cooling system is setup. If you're getting 200 on the gauge with a 195 stat, in all likelyhood nothing is wrong. Now 200 on gauge with a 180 stat, now there I would say your cooling system could be doing better. Not going to hurt anything running 200-220, but IMO a perfect cooling system should be able to keep the temp at t-stat level.
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Re: is 200 temp ok for 440 ?
[Re: terzmo]
#711685
05/31/10 09:44 PM
05/31/10 09:44 PM
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Joined: Feb 2003
Posts: 10,208
Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,208
Someplace you aren't
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I put in a 190 stat, OEM rating, in my 383. That helped with the fuel mixture since I don't have a strip kit for my AVS. The 160 stat had it so much cooler, that a more dense charge entered the engine. Ran lean. FSM said that a stuck stat will cause a lean condition. My oil stays clean now as well. 
I want my fair share
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Re: is 200 temp ok for 440 ?
[Re: moparboy66]
#711687
05/31/10 11:33 PM
05/31/10 11:33 PM
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Joined: Dec 2007
Posts: 7,759
So Cal
HealthServices
Why would you even post that?
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Why would you even post that?
Joined: Dec 2007
Posts: 7,759
So Cal
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Here is how I do it.
Start the car cold put your hand behind the fan and check to see how much air flow there is.
Put a piece of cardboard in front of the radiator to speed the warming process.
When the motor is warm (180+) and the upper and lower hoses are hot as well remove the cardboard.
Now place your hand behind the fan it should be warm and the force of air blowing across your hand should be stronger.
Allen
Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first.
Life was a little easier when I was just a wrench.
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Re: is 200 temp ok for 440 ?
[Re: HealthServices]
#711688
05/31/10 11:43 PM
05/31/10 11:43 PM
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Joined: Feb 2003
Posts: 10,208
Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,208
Someplace you aren't
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You can see if it is drawing the air by putting a piece of paper in front of the radiator.
My car never got hot but my uncle asked me one day why the fan was on baackwards.
I had just put it back on the way it came off when I did an engien chage from what it had when I first got it.
I never even looked at it. Sure enough, it was backwards. The correct way caused it to lightly hit, guess the peopel didn't think to straighten up the blades.
Made no difference in cooling when I got it right.
I want my fair share
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383man
[Re: Supercuda]
#711689
06/01/10 12:07 AM
06/01/10 12:07 AM
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Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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Quote:
Quote:
I use a 160 stat and I run from 170 to about 185 on the highway on very hot day. What I did not like was stuck in traffic it would creep up to 200 and I dont have a shroud right now. So I decided to try this electic fan along with my stock fan and it did the trick. I have it on a toggle switch and I only turn it on when stuck in traffic and it brings it right back down to 180. Ron
I had the same problem with my 64 300. Once I found a shroud the problem was fixed. Finding the shroud was fun, ended up putting a radiator from a 69 Imperial in and a bud of mine happened to see the shroud hanging on the wall of some boneard he was visiting and called me. Heck of an eye to see that.
I was going to just put a shroud on but I could not find one that I was sure would fit for under $200 big ones. I bought the fan for $69 dollars. I still plan to also install a shroud as you did and it will cool even better. Ron
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