Previous Thread
Next Thread
Print Thread
Page 1 of 7 1 2 3 4 5 6 7
end of post #3130468
03/19/23 07:38 AM
03/19/23 07:38 AM
Joined: Mar 2005
Posts: 2,060
Pendleton NY
T
terzmo Offline OP
top fuel
terzmo  Offline OP
top fuel
T

Joined: Mar 2005
Posts: 2,060
Pendleton NY

Thanks in advance to all. Thanks Moparts

Last edited by terzmo; 06/26/23 07:36 AM.
Re: Cooling issue [Re: terzmo] #3130469
03/19/23 07:52 AM
03/19/23 07:52 AM
Joined: Dec 2014
Posts: 5,710
ohio
R
ruderunner Offline
master
ruderunner  Offline
master
R

Joined: Dec 2014
Posts: 5,710
ohio
I'd Look first at getting a good shroud. Your primary issue is inadequate airflow.

This can be confirmed with even a cheap fan zip tied to the radiator. If it cools down at idle when you turn the fan on, there you go.


Angry white pureblood male
Re: Cooling issue [Re: ruderunner] #3130473
03/19/23 08:38 AM
03/19/23 08:38 AM
Joined: Jan 2003
Posts: 10,486
Freeport IL USA
poorboy Offline
I Live Here
poorboy  Offline
I Live Here

Joined: Jan 2003
Posts: 10,486
Freeport IL USA
On my 49 Dodge truck, I had to remove the factory motor driven fan because there wasn't enough clearance between the radiator and the water pump (you get that with putting a V8 and different chassis under old sheet metal).

My local Car Quest had a high CFM single 16" electric fan that has adjustable temp settings for the cooling speed settings. I bought the 16" fan because it fit the vary tight confines of the location it had to fit in and matched the height of my very small 4 core core Champion radiator. There is a temp range between the turn on and the turn off you can't adjust, but you can choose the high/low range of the operating temp. The fan comes in a kit with the fan, temp control thermostat, and a wiring kit. Its attached to the radiator with those radiator zip tie things and there are a few choices on how to mount the temp probe for the thermostat. This system has been on the truck for a couple of summers now and seems to be working well. You will need to make a shroud for it to work on your radiator, or there could be larger diameter fans (or a dual fan) system available. My point is, adjustable temp electric fan kits are out there. When mine kicks on, you can watch the temp drop on the temp gauge. It only runs a minute or two when the coolant temp hits your high temp range, and shuts off when it reaches the low temp setting. I have mine is wired through the ignition switch so it only runs when the motor runs, but it can be set up to come on ( and turns off) when ever the temp limits are hit.


With that said, making a very good fan shroud for your existing system may actually solve your cooling system problems. You really need to pull as much air through your radiator at idle speed as you can, and your current half azz shroud isn't doing the job. If the good shroud doesn't solve your issue, you can then simply buy the adjustable electric fan to replace your existing fan size.

Re: Cooling issue [Re: poorboy] #3130480
03/19/23 09:13 AM
03/19/23 09:13 AM
Joined: Feb 2003
Posts: 8,658
A
Andrewh Offline
master
Andrewh  Offline
master
A

Joined: Feb 2003
Posts: 8,658
https://board.moparts.org/ubbthreads/ubbthreads.php/topics/2485313/1.html

you can read hear on the mercedes cooling fan and the controller created for it.
it cools quite well.

Re: Cooling issue [Re: poorboy] #3130481
03/19/23 09:18 AM
03/19/23 09:18 AM
Joined: Mar 2005
Posts: 2,060
Pendleton NY
T
terzmo Offline OP
top fuel
terzmo  Offline OP
top fuel
T

Joined: Mar 2005
Posts: 2,060
Pendleton NY
.

Last edited by terzmo; 06/26/23 07:38 AM.
Re: Cooling issue [Re: terzmo] #3130486
03/19/23 10:02 AM
03/19/23 10:02 AM
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
R
RapidRobert Offline
Circle Track
RapidRobert  Offline
Circle Track
R

Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
I'm wondering if a smaller pump pulley to speed up the air/water flow would be a solution


live every 24 hour block of time like it's your last day on earth
Re: Cooling issue [Re: RapidRobert] #3130489
03/19/23 10:38 AM
03/19/23 10:38 AM
Joined: Jan 2003
Posts: 20,644
So Near, Yet So Far
topside Offline
Too Many Posts
topside  Offline
Too Many Posts

Joined: Jan 2003
Posts: 20,644
So Near, Yet So Far
Had a similar deal with a pretty stout 512" RB in a Duster; it would hit 200 or so in traffic.
Added a shroud to its aluminum radiator, and a smaller pump pulley.
Never got over 180 after that.
Also: prior owner had an electric pusher fan - which blocks airflow - and I removed it.

Re: Cooling issue [Re: terzmo] #3130495
03/19/23 10:53 AM
03/19/23 10:53 AM
Joined: Jan 2003
Posts: 11,890
Benton, IL.
D
DaveRS23 Offline
Special needs idiot
DaveRS23  Offline
Special needs idiot
D

Joined: Jan 2003
Posts: 11,890
Benton, IL.
Most agree that air flow is the issue. Having been in this position before, I'll offer a suggestion that has worked for me; I go to a pick-a-part yard and pull a fan from an 80s Dodge pick up. It is too large in diameter to fit in the shroud. But, it's aluminum so it's easy to cut down, is lighter than the steel fan you have now, and it's balance isn't hurt much with the trimming.

Those fans move a LOT of air. More blades and more pitch to boot so it gets a clutch due to the additional drag. I have used this on several Mopars with no down side. Currently I have one on the 540 Hemi in my Cuda and it still has the original re-cored radiator with a good shroud.

And, if it matters, this route is cheap.


Master, again and still
Re: Cooling issue [Re: DaveRS23] #3130510
03/19/23 11:39 AM
03/19/23 11:39 AM
Joined: Jun 2008
Posts: 3,913
usa
L
lewtot184 Offline
master
lewtot184  Offline
master
L

Joined: Jun 2008
Posts: 3,913
usa
i'm certain a lot of people have the same or similar problem that the OP has; i do for one. so, what smaller pulley would be recommended?

Re: Cooling issue [Re: DaveRS23] #3130511
03/19/23 11:41 AM
03/19/23 11:41 AM
Joined: May 2005
Posts: 4,679
Florida
BDW Online content
master
BDW  Online Content
master

Joined: May 2005
Posts: 4,679
Florida
Originally Posted by DaveRS23
Most agree that air flow is the issue. Having been in this position before, I'll offer a suggestion that has worked for me; I go to a pick-a-part yard and pull a fan from an 80s Dodge pick up. It is too large in diameter to fit in the shroud. But, it's aluminum so it's easy to cut down, is lighter than the steel fan you have now, and it's balance isn't hurt much with the trimming.

Those fans move a LOT of air. More blades and more pitch to boot so it gets a clutch due to the additional drag. I have used this on several Mopars with no down side. Currently I have one on the 540 Hemi in my Cuda and it still has the original re-cored radiator with a good shroud.

And, if it matters, this route is cheap.



Got a pic of this?

Re: Cooling issue [Re: BDW] #3130514
03/19/23 11:45 AM
03/19/23 11:45 AM
Joined: Jan 2003
Posts: 11,890
Benton, IL.
D
DaveRS23 Offline
Special needs idiot
DaveRS23  Offline
Special needs idiot
D

Joined: Jan 2003
Posts: 11,890
Benton, IL.
I'm not good at posting pics, but I'll try.


Master, again and still
Re: Cooling issue [Re: DaveRS23] #3130517
03/19/23 11:51 AM
03/19/23 11:51 AM
Joined: Jan 2003
Posts: 11,890
Benton, IL.
D
DaveRS23 Offline
Special needs idiot
DaveRS23  Offline
Special needs idiot
D

Joined: Jan 2003
Posts: 11,890
Benton, IL.
Here's one I already had. Such as it is. When I get a chance, I'll try to get a bit better shot or two.

[Linked Image]


Master, again and still
Re: Cooling issue [Re: DaveRS23] #3130521
03/19/23 12:01 PM
03/19/23 12:01 PM
Joined: May 2019
Posts: 6,174
nowhere
S
Sniper Offline
master
Sniper  Offline
master
S

Joined: May 2019
Posts: 6,174
nowhere

Re: Cooling issue [Re: terzmo] #3130560
03/19/23 02:08 PM
03/19/23 02:08 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,007
Bend,OR USA
I would try a 160 stat first and go from there scope up twocents


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Cooling issue [Re: Cab_Burge] #3130579
03/19/23 03:09 PM
03/19/23 03:09 PM
Joined: May 2019
Posts: 6,174
nowhere
S
Sniper Offline
master
Sniper  Offline
master
S

Joined: May 2019
Posts: 6,174
nowhere
Originally Posted by Cab_Burge
I would try a 160 stat first and go from there scope up twocents


All a thermostat does is set the minimum temperature. It will do nothing for overheating.

Re: Cooling issue [Re: Sniper] #3130597
03/19/23 04:16 PM
03/19/23 04:16 PM
Joined: Jan 2003
Posts: 20,644
So Near, Yet So Far
topside Offline
Too Many Posts
topside  Offline
Too Many Posts

Joined: Jan 2003
Posts: 20,644
So Near, Yet So Far
Generally speaking, and by design intent, a thermostat does regulate minimum coolant temp.
But if the cooling system has enough capacity & flow capability, a cooler thermostat can bring operating temps down.
I did that on my Dually, and it definitely runs cooler.
That said, it also has an added ATF cooler and its factory oil cooler.

I forgot to add in a previous reply that water rejects heat a bit better than anti-freeze.
If the OP's climate allows it, I'd also drop the anti-freeze ratio to 25%.
At the track of course, no anti-freeze.

Re: Cooling issue [Re: topside] #3130627
03/19/23 06:03 PM
03/19/23 06:03 PM
Joined: Jan 2003
Posts: 4,267
Morrow, OH
markz528 Offline
master
markz528  Offline
master

Joined: Jan 2003
Posts: 4,267
Morrow, OH
I have the opposite problem in my stockish 67 383 Coronet. Runs hot on highway and cools off as soon as I slow down.


67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......
Re: Cooling issue [Re: markz528] #3130629
03/19/23 06:36 PM
03/19/23 06:36 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,007
Bend,OR USA
Sounds like you need a thermostat work shruggy
I've seen that in the past living in the Mojave desert in the summertime in and driving in the daylight shruggy


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Cooling issue [Re: markz528] #3130662
03/19/23 08:36 PM
03/19/23 08:36 PM
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
R
RapidRobert Offline
Circle Track
RapidRobert  Offline
Circle Track
R

Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
Originally Posted by markz528
I have the opposite problem in my stockish 67 383 Coronet. Runs hot on highway and cools off as soon as I slow down.
needs more radiator (or current one rodded out)


live every 24 hour block of time like it's your last day on earth
Re: Cooling issue [Re: RapidRobert] #3130672
03/19/23 09:13 PM
03/19/23 09:13 PM
Joined: Feb 2003
Posts: 8,658
A
Andrewh Offline
master
Andrewh  Offline
master
A

Joined: Feb 2003
Posts: 8,658
Originally Posted by RapidRobert
Originally Posted by markz528
I have the opposite problem in my stockish 67 383 Coronet. Runs hot on highway and cools off as soon as I slow down.
needs more radiator (or current one rodded out)

or you have an airflow blockage at higher speeds, or you have a colapsing lower hose at speed.

Page 1 of 7 1 2 3 4 5 6 7






Powered by UBB.threads™ PHP Forum Software 7.7.1