over heating problem
#1451896
06/12/13 08:20 PM
06/12/13 08:20 PM
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Joined: Nov 2011
Posts: 256 libby mt
lifted85
OP
enthusiast
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OP
enthusiast
Joined: Nov 2011
Posts: 256
libby mt
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hey guy's i to a problem with my 360 in my 77 power wagon, I made a first long haul today lol 50 mile's total an she was running hot 250 deg, made it to where I needed to go so let it sit for a bit filed it up with water an I bypassed the heater core thinking maybe that's plugged, on the way home same thing I had to stop again let it sit fill it back up, when It's driven in town 20-25mph no problem's.. hell it's only 66-70 deg out.. also I removed the t-stat. thinking maybe water pump but it also has a flex fan on it, what's your guy's take on those?? I hate them but if they are a upgrade from the clutch fan then I will leave it but if not then I will throw a clutch fan in her
drive fast, drive hard, DRIVE MOPAR
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Re: over heating problem
[Re: ahy]
#1451898
06/12/13 08:41 PM
06/12/13 08:41 PM
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Joined: Jul 2003
Posts: 6,167 Maryland
GO_Fish
master
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master
Joined: Jul 2003
Posts: 6,167
Maryland
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do you have any surge at cruising speeds? A lean engine will generate a lot of heat. This kind of thing can show up on a shake down run.
Scott B.
"I'm a self-made man... I started with nothing, and I still have most of it!"
68 360 rusty B'cuda 'vert (GO Fish)13.59@ 98.72 mph
69 340 GTS stock 14.18@ 95.60 mph
01 5.9L Ram 1500 Quad Cab 4x4
01 3.5L 300M 16.23@ 86.97 mph
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Re: over heating problem
[Re: GO_Fish]
#1451899
06/12/13 09:54 PM
06/12/13 09:54 PM
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Joined: Nov 2011
Posts: 256 libby mt
lifted85
OP
enthusiast
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OP
enthusiast
Joined: Nov 2011
Posts: 256
libby mt
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no shaking nothing, I thought maybe timing but she fire's up good first turn of the key.. the radiator is stock/factory I just aint a fan of them flex fan's because they flatten out at at rpm range, the flex fan was on it when I bought it but I got a clutch fan off my 90 318 I could put on it..
drive fast, drive hard, DRIVE MOPAR
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Re: over heating problem
[Re: ahy]
#1451901
06/12/13 11:20 PM
06/12/13 11:20 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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What Ahy said & it'd have to be pretty badly plugged. On the lean issue take out the metering rod springs & block the pistons up & try it out. Holler how it goes
live every 24 hour block of time like it's your last day on earth
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Re: over heating problem
[Re: Challenger 1]
#1451903
06/13/13 01:27 AM
06/13/13 01:27 AM
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Joined: Nov 2011
Posts: 256 libby mt
lifted85
OP
enthusiast
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OP
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Posts: 256
libby mt
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will mess with the carb tomorrow, pulled the flex fan off, also pulled the lower radiator hose off an stuck my garden hose in the top an seamed to flow good lol, I pulled the t-stat thinking maybe it was sticking... will update as soon as I get her buttoned up.
drive fast, drive hard, DRIVE MOPAR
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Re: over heating problem
[Re: stumpy]
#1451904
06/13/13 09:00 AM
06/13/13 09:00 AM
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Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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Quote:
Put the thermostat back in.
and what I am reading is you keep filling it back up with water...that would meant fix the LAEK and then it will have a better chance of cooling the engine.
it will push water out as it warms up and when enuff water is gone it keeps getting hotter.
pull the rad and do a flow test on it,when in the truck and warm fell the core for cool spots..that would be where a clog in the tubes are and no flow.
check rad cap for correct psi =16 lbs =runs hot fast with no water.
fix leaks then tune engine
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Re: over heating problem
[Re: scratchnfotraction]
#1451905
06/13/13 07:11 PM
06/13/13 07:11 PM
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Joined: Nov 2011
Posts: 256 libby mt
lifted85
OP
enthusiast
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OP
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Joined: Nov 2011
Posts: 256
libby mt
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there is no leak's I had to fill it up because it kept's boiling out lol, I got a buddy that has a extra radiator out of a power wagon so im going to throw it in while I have the fan out, might as well..
drive fast, drive hard, DRIVE MOPAR
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Re: over heating problem
[Re: lifted85]
#1451906
06/13/13 07:17 PM
06/13/13 07:17 PM
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Joined: Jan 2005
Posts: 3,344 Central TX
roe
master
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master
Joined: Jan 2005
Posts: 3,344
Central TX
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My money is on bad radiator. I bet that takes care of it.
1971 Plymouth Satellite 408/904 8 3/4 3.23 SG
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Re: over heating problem
[Re: lifted85]
#1451907
06/13/13 07:26 PM
06/13/13 07:26 PM
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Joined: Aug 2010
Posts: 1,525 Eastern shore, New England
roadrunner69s
pro stock
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pro stock
Joined: Aug 2010
Posts: 1,525
Eastern shore, New England
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Sometimes you may never find the problem even after replacing "everything." In my GTX I rebuilt the carb and all jetting, air intake, water pump, recored 3 row 26" factory stock radiator, fan/clutch, TStat, shroud, hoses, belts, pulley, fuel pump, all high voltage delivery items, using coolant of 90% demin water with Redline water wetter, optimized timing adjustments, and even putting the cam shaft back to 100% factory stock to reduce engine power. Never solved the problem of overheating at idle on hot summer days. Lived with it for 3 yrs before selling the car. Used an overflow container to prevent leaving puddles at shows. The only step I didn't take was an oversized aluminum radiator with a much higher heat dissipation.
If you run with the heater core at full bore and it keeps your operating temp a bit lower than when it is off, you probably have decent flow through it. If your radiator is gunked up you should be able to see signs of blocked channels at the top of the core.
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Re: over heating problem
[Re: roadrunner69s]
#1451908
06/13/13 08:13 PM
06/13/13 08:13 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Plugged heater core wouldn't be an issue here.
Running hot at speed it usually water flow related. Wrong pulleys, wrong pump, radiator flow issue, thermostat not opening up are probable issues.
Since you removed the thermostat it's probably not the issue, but put one in. What, if anything changed since it last ran right?
One other thing, I had a non-opening exhaust flapper that drove me nuts trying to find my "overheating" problems. If you have one make sure it is free to move AND the spring that opens it works (my spring had the tail broke off).
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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