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Re: Steel lower rad hose, Big Block
[Re: 6bblgt]
#2465424
03/12/18 09:33 PM
03/12/18 09:33 PM
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Joined: Nov 2010
Posts: 3,696
jersey
Spaceman Spiff
master
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master
Joined: Nov 2010
Posts: 3,696
jersey
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if you can't maintain temperature & it is exceeding your thermostat rating - the excellent flow & open thermostat may not allow the fluid to spend enough time in the radiator to cool so then, why when a car is running hot, do you " race" the engine, thereby speeding up flow? wouldn't you want it to idle, so the coolant spends more time in the radiator?
526 cubes of angry wedge, pushbutton shifted, 9 passenger killer!
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Re: Steel lower rad hose, Big Block
[Re: terzmo]
#2465428
03/12/18 09:36 PM
03/12/18 09:36 PM
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Joined: Nov 2010
Posts: 3,696
jersey
Spaceman Spiff
master
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master
Joined: Nov 2010
Posts: 3,696
jersey
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I have a 472 hemi in a 67 R/T that runs cool in hot weather in traffic and down the road for what I say are short high speed runs. At 65 to 70 mph the temp will rise over 200 (slowly) if kept at the speed. Slow to 50-55 and the temp will go down. Alum rad with stock waterpump. I'm thinking a problem "could" be the lower hose collapsing at higher RPM. Does anyone use a non stock rigid or flex metal lower hose ? what's your timing? what carb?
526 cubes of angry wedge, pushbutton shifted, 9 passenger killer!
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Re: Steel lower rad hose, Big Block
[Re: Spaceman Spiff]
#2465713
03/13/18 12:32 PM
03/13/18 12:32 PM
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Joined: Sep 2003
Posts: 19,305
north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,305
north of coder
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if you can't maintain temperature & it is exceeding your thermostat rating - the excellent flow & open thermostat may not allow the fluid to spend enough time in the radiator to cool so then, why when a car is running hot, do you " race" the engine, thereby speeding up flow? wouldn't you want it to idle, so the coolant spends more time in the radiator? see thread in the race section. "time in the radiator" is an old wives tale. you need coolant flow, air flow, plus adequate radiator size to maintain cooling parameters. 
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Re: Steel lower rad hose, Big Block
[Re: terzmo]
#2466704
03/15/18 12:28 AM
03/15/18 12:28 AM
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Joined: Sep 2015
Posts: 1,096
Australia
ozymaxwedge
super stock
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super stock
Joined: Sep 2015
Posts: 1,096
Australia
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Watching this thread as I have the same issues with our big blocks.
People saying YES thermostats 50%, people saying NO thermostat %15 and people saying cut the guts out of the stat %35 .
We have run with the guts cut out, too hot and just run without a thermostat and still too hot, trying the 180 thermostat soon even though some say it will not help.
1963 Plymouth Max Wedge
1971 Barracuda
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Re: Steel lower rad hose, Big Block
[Re: Spaceman Spiff]
#2467044
03/15/18 07:57 PM
03/15/18 07:57 PM
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Joined: Mar 2005
Posts: 2,060
Pendleton NY
terzmo
OP
top fuel
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OP
top fuel
Joined: Mar 2005
Posts: 2,060
Pendleton NY
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I have a 472 hemi in a 67 R/T that runs cool in hot weather in traffic and down the road for what I say are short high speed runs. At 65 to 70 mph the temp will rise over 200 (slowly) if kept at the speed. Slow to 50-55 and the temp will go down. Alum rad with stock waterpump. I'm thinking a problem "could" be the lower hose collapsing at higher RPM. Does anyone use a non stock rigid or flex metal lower hose ? what's your timing? what carb? Holley 950 double pump 12 at idle..36 at high speed
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Re: Steel lower rad hose, Big Block
[Re: terzmo]
#2467552
03/16/18 11:07 PM
03/16/18 11:07 PM
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Joined: Sep 2015
Posts: 1,096
Australia
ozymaxwedge
super stock
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super stock
Joined: Sep 2015
Posts: 1,096
Australia
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terzmo, Is your timing ALL in at 65mph ? Maybe it is not full advance at the RPM your sitting on ?
1963 Plymouth Max Wedge
1971 Barracuda
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Re: Steel lower rad hose, Big Block
[Re: moparx]
#2468154
03/18/18 04:39 PM
03/18/18 04:39 PM
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Joined: Jan 2008
Posts: 1,210
Minn
SportF
pro stock
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pro stock
Joined: Jan 2008
Posts: 1,210
Minn
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if you can't maintain temperature & it is exceeding your thermostat rating - the excellent flow & open thermostat may not allow the fluid to spend enough time in the radiator to cool so then, why when a car is running hot, do you " race" the engine, thereby speeding up flow? wouldn't you want it to idle, so the coolant spends more time in the radiator? see thread in the race section. "time in the radiator" is an old wives tale. you need coolant flow, air flow, plus adequate radiator size to maintain cooling parameters. This is one of my 3 most favorite myths though. Neat thing about it is that it will NEVER go away.
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