Re: Searching for advice on overheating issue
[Re: WS68SSC]
#2326171
06/24/17 06:15 PM
06/24/17 06:15 PM
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Joined: Dec 2007
Posts: 12,592 Great Neck,LI,new york
hemi-itis
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 12,592
Great Neck,LI,new york
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What is the all in timing? Do you know what your AFR is or have you read the plugs.Could be the timing is odd or it's too lean.
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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Re: Searching for advice on overheating issue
[Re: WS68SSC]
#2326177
06/24/17 06:29 PM
06/24/17 06:29 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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My engine temperature is remaining around 220. The temperature will not drop when the vehicle is traveling on the highway.
The radiator is aluminum and is made by Northern. The radiator core has 2 rows of 1" tubes. I filled the radiator with water and a bottle of waterwetter.
Attached to the aluminum radiator is a 16" electric fan that produces 2000 cfm. The electric fan is a puller that is located between the radiator and engine.
The engine, a 440, has been freshly rebuilt. The engine does not have an engine fan attached to it. The water pump is brand new. The water pump housing is factory original. The timing is set at 36 degrees. The carb has 94 jets and a power plug.
The car performs excellent despite its overheating. Any advice? Thanks!
For one, the cfm of the puller fan jumps out and two, I'd put a QF 4-window p/v in the primary and jet down accordingly then adjust pvcr's for best top end afr's/power.......... No wideband............ Is there a shroud or is the fan tied to the rad like most........
Last edited by Thumperdart; 06/24/17 06:33 PM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Searching for advice on overheating issue
[Re: ahy]
#2326199
06/24/17 08:02 PM
06/24/17 08:02 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I would confirm temp with a known good mech gauge. take stat out just for an hour for a drive to see if it is opening all the way. take the fan off & go out on the highway quickly to see if it is restricting airflow. what do the plugs show? As said is mixture/timing in the ballpark. at the highway speed where it runs hot you might duplicate that RPM in your driveway & see what the adv is at that point (if you have a dialback or timing tape). post any news. EDIT what does it run at at lower speeds? MORE EDIT is the rad fairly new? if in doubt you could run a garden hose in the top & get a ballpark figure if it is flowing reasonably enough out the bottom nipple.
Last edited by RapidRobert; 06/24/17 08:16 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Searching for advice on overheating issue
[Re: ahy]
#2326201
06/24/17 08:13 PM
06/24/17 08:13 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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I run the HHR fan in HOT climates and it blows away anything else I've used so far along w/the new and improved Morose elec water pump..............
Last edited by Thumperdart; 06/24/17 08:13 PM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Searching for advice on overheating issue
[Re: WS68SSC]
#2326231
06/24/17 10:31 PM
06/24/17 10:31 PM
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Joined: Oct 2007
Posts: 4,213 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,213
New York
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1. at highway speed (anything above 35 unless it's a truck) the fan is completely unnecessary, and an electric with a shroud may be restricting air flow. 2. can any air enter the nose of the car without going through the radiator core (bad hood-to-cowl and rad support seals)? Fix that. 3. let me guess: no vacuum spark? 4. add power valve, or you're liquid cooling with rich mixture. 5. core face area may be too small, you need about 1 square inch per HP, core thickness is nice but it doesn't have the same value. 6. if this is auto with the ATF cooler in the rad, you need an aux ATF cooler.
Boffin Emeritus
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Re: Searching for advice on overheating issue
[Re: WS68SSC]
#2326305
06/25/17 03:29 AM
06/25/17 03:29 AM
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Joined: Jan 2017
Posts: 274 Granbury TX
Prochargedmopar
enthusiast
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enthusiast
Joined: Jan 2017
Posts: 274
Granbury TX
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I just saw this on fb but Not sure of pricing. Maybe can get idea from pictures. https://www.facebook.com/SDConcepts/posts/10155283646780729
"Old" member Registered: Sep 2001 Lost my credentials, I'm Back!! LOL 71 Ply Satellite Procharged 73 Dodge Dart Swinger 73 Ford F-100 390/Sniper efi/back to carb 01 Town and Country Limited 08 Dodge 2500 6.7 5" Deleted 02 Mercedes C230K 19 Camry
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Re: Searching for advice on overheating issue
[Re: WS68SSC]
#2326314
06/25/17 06:37 AM
06/25/17 06:37 AM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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Either the water pump is bad, or you are turning it too slow or both.
The biggest mistake I see is under driving the water pump. I run mine at 6% over crank speed. I also use a Milodon pump as it moves way more coolant.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Searching for advice on overheating issue
[Re: actionange]
#2327034
06/26/17 05:09 PM
06/26/17 05:09 PM
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Joined: Apr 2006
Posts: 4,220 West Plains, MO
DrCharles
master
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master
Joined: Apr 2006
Posts: 4,220
West Plains, MO
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Not allowing the coolant sufficient "radiator" time will not allow sufficient cooling time. This myth has persisted for decades... and if true would violate at least one law of thermodynamics. Besides, if the coolant flows too slowly, it's possible to get hot spots and steam bubbles in the heads. Vapor is not a very good coolant compared to liquid. Edit: Looks like R. and I were typing at the same time
Last edited by DrCharles; 06/26/17 05:10 PM.
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Re: Searching for advice on overheating issue
[Re: WS68SSC]
#2327106
06/26/17 07:41 PM
06/26/17 07:41 PM
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Joined: Jan 2003
Posts: 19,385 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,385
Las Vegas
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Looks like most suggestions are covered here. The obvious is to check the gauge first of all. Second decide how hot is too hot. 220 operating temp is fairly normal these days. Does it climb to 220 and stop there or will it continue to climb? Also one thing that gets overlooked a lot is ignition timing. When you say 36 I assume you mean its locked out at 36, which should be ok but might check that. Is the exhaust getting hot, as in the headers. That would be an indication of retarded timing for sure as would increased operating temps.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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