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Author
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Topic: Keeping it Cool
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Scott (69Mach)
Gearhead Posts: 841
From: Walnut Creek, CA USA
Registered: Jun 99
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posted 03-31-2003 11:38 AM
 
I put in a new 4-row radiator during the rebuild. I also added a pusher fan in front that kicks in when the rad gets hot (22oo cfm I think). This is backed by a good flex fan off the water pump. My problem is, the damn thing still runs hot.I got on the motor pretty good through the gears last night with an ambient air temp around 75 degrees. The heat guage quickly spiked up to 3/4 of the way to spew and took a while to head back down. It also runs hot anytime I sit in traffic. The system is tight, no head gasket leaks, etc. (I hope so, motor has ~500 miles on it). I've got water wetter, running 3/4 water and 1/4 antifreeze. I'm at wits end. Will an aluminum radiator help me control the heat??? If not, I won't be able to drive this car in traffic without it spewing everywhere. Thanks, Scott P.S. It runs damn strong. Waiting on tires before taking it to Sacramento...
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ccode67
Gearhead Posts: 3285
From: douglasville,ga,usa
Registered: Mar 2001
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posted 03-31-2003 11:53 AM
Are you using a mechanical guage or the factory electric????
I ask this because the factory guage in my car was showing very hot, I put new 3 core radiator and a flowkooler pump and it still showed hot, installed a mechanical guage and it showed 165 degrees, factory guage or maybe the sender is bad.------------------
Stuart
MCA #48902
M&M #1091
67 stang 5 speed, 351W,
Edelbrock Performer RPM package my photo page
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Scott (69Mach)
Gearhead Posts: 841
From: Walnut Creek, CA USA
Registered: Jun 99
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posted 03-31-2003 08:19 PM
It's the factory guage. But I know it's in the range 'cause it spews at when it get to H.
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ekbeanctr
Gearhead Posts: 772
From: Middlebury, IN USA
Registered: Dec 2000
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posted 03-31-2003 08:31 PM
How about the radiator cap, what pressure is it rated at? and how new is it. If the spring is weak it will spew out water quicker than it should.The other thing to check is the water pump, new or old and what volume. Are you running undersize pulleys, that could slow down the water pump. Just some ideas ------------------
Have a Wonderful Day
CandyApple 65 Fastback
351W, 4 Speed
Versaille 9" Rear End
Global West Front End
[email protected] [This message has been edited by ekbeanctr (edited 03-31-2003).]
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Fastymz
Moderator Posts: 22791
From: Reno Nv M&M #1240
Registered: Apr 2001
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posted 03-31-2003 09:29 PM
Scott with both those fans,and a 4row rad.It should be enough to cool it off.
I'd change the T-stat,and the Radiator cap.Make sure the pump is pushing water.And at what temp does your electric fan come on at?
Do you have a shroud for the flex fan.And is the fan less then 2" from the rad?
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SCOOP
oddly obsessed with big scoops on little Mustangs "Experience is what you get when you didn't get
what you wanted." 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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RonnieT
Gearhead Posts: 912
From: Port Allen, La. 70767
Registered: Jun 99
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posted 03-31-2003 10:28 PM
You could be running a little lean on the mixture and causing high cylinder temps, the radiator and fans may not be the problem.------------------
Ronnie
69 mach1 351W-4V engineless at the time!
70 Torino GT 351C-4v with a "shaker"
Mustangs and More Member #23
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Scott (69Mach)
Gearhead Posts: 841
From: Walnut Creek, CA USA
Registered: Jun 99
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posted 04-01-2003 11:00 AM
Got a shroud, new high volume pump, good 5-spoke flex fan up against the radiator, now thermostat and a new cap (16 lb I think). Basically everything is new and functioning. I'm wondering if I need to go to an aluminum radiator...
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kid vishus
Gearhead Posts: 7251
From: middle of NC
Registered: Oct 2000
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posted 04-01-2003 11:50 AM
I would suspect something else is wrong somewhere. I ran an 11-1 cleveland on the street with a loose convertor, and never had any overheating problems, not even when it was 100* outside. I used a 4 core factory radiator, a flex fan, and a hi-volume water pump and it was fine. It never got over 220*, even while sitting in traffic. I was using a good Autometer guage so I knew exactly where the temp was. Factory guages tend to be very questionable as to their accuracy.I am thinking that whatever the problem is, an aluminum radiator isnt going to correct it. Guess that wasn't much help.  I was just relaying my experiance.
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johnmustang
Gearhead Posts: 6748
From: British Columbia , Canada
Registered: Nov 2001
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posted 04-01-2003 12:06 PM
How is your timing? Carb set up is O.K.? Was your block boiled and completely cleaned? Did you change your heater core, if not it could have had crap in it that found it`s way into your rad and is plugging it some-what. Double check your head gaskets. Run a full pressure check on your cooling system, then pull the rad, get it blown out, then do a complete cooling system flush.
JOHN 
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65 2+2 FASTBACK
87 TAURUS WAGON
98 F150 XLT TRITON V8 4.6, 4 WHEEL DRIVE
Member:Vancouver Island Mustang Association
M&M #1710
MyPhotoPage
MY TRUCK
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Scott (69Mach)
Gearhead Posts: 841
From: Walnut Creek, CA USA
Registered: Jun 99
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posted 04-01-2003 04:22 PM
It's all new stuff. I used an underdrive pulley on the high flow pump figureing they'd balance out and I'd be OK. I may dump the pulley and see what happens. Cheaper than a new radiator...
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Inbred-Jed
Journeyman Posts: 41
From: Chester, Wv 26034
Registered: Mar 2003
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posted 04-01-2003 05:39 PM
What type of engine is this? I raced two cleveland blocks that had this same problem until i added a Griffin aluminum radiator and a Meziere electric pump. Ran 190 in the dead of summer at the track after this mod. It had 12.5:1 compression and the .030 overbore didnt help.
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Mpcoluv
Gearhead Posts: 1421
From: Charlotte NC usa
Registered: Apr 2001
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posted 04-01-2003 07:05 PM
quote:
Originally posted by Scott (69Mach):
It's all new stuff. I used an underdrive pulley on the high flow pump figureing they'd balance out and I'd be OK. I may dump the pulley and see what happens. Cheaper than a new radiator...
Dump the under drive water pump pulley.
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V8 Thumper
Gearhead Posts: 4777
From: Phoenix, Arizona
Registered: Dec 2001
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posted 04-01-2003 08:57 PM
quote:
Originally posted by johnmustang:
How is your timing?
My thoughts exactally. I had 36* overall in my little (high strung  ) Windsor, backed it down to 34* and it made quite a difference in the motor's running temp. I do run an aluminum rad, but NO thermostat, I run a 5/8" restrictor and a 7# cap. I know some guys swear it's snake oil, but one bottle of Water Wetter in an 80/20 water/coolant mix dropped my temps even further  ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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Scott (69Mach)
Gearhead Posts: 841
From: Walnut Creek, CA USA
Registered: Jun 99
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posted 04-02-2003 10:26 AM
It's a 10:1 351C running 36* advance. I'll replace the underdrive pulley and see what happens...
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