Re: Cooling issue
[Re: Checker]
#3054865
07/01/22 08:55 AM
07/01/22 08:55 AM
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Joined: Mar 2011
Posts: 3,101 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,101
Michigan
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There are all kinds of “stock” pulleys. What is the diameter of the bottom one versus the top?
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Re: Cooling issue
[Re: A727Tflite]
#3054932
07/01/22 12:45 PM
07/01/22 12:45 PM
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Joined: Jan 2003
Posts: 15,526 Omaha Ne
TJP
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I Live Here
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Omaha Ne
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There are all kinds of “stock” pulleys. What is the diameter of the bottom one versus the top? Also, What are the core dimension's H & W? How big is the fan? What is the distance between the shroud opening and tips of the fan blade? When the engine is idling will it hold a shop or paper towel to the front of the radiator? Will it do so across all areas of the radiator? I would start with the above Lastly, putting a fan in front of the radiator is not recommended as it can block the air flow at higher speeds With electric fans, one normally gets what they pay for and CFM ratings are typically skewed especially on the cheap ones. There are a number of sources depending on the room available. Also, the higher CFM fans will draw more current so the charging system and wiring HAVE to be in good shape and sized appropriately
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Re: Cooling issue
[Re: TJP]
#3054991
07/01/22 06:35 PM
07/01/22 06:35 PM
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Joined: Jun 2022
Posts: 32 North Tonawanda
Checker
OP
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OP
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Joined: Jun 2022
Posts: 32
North Tonawanda
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7 inch top...6.5 bottom
3 row 26 inch rad
blades are half in shroud ..half out.. at idle sucks a paper towel instantly and holds it there
Last edited by Checker; 07/01/22 06:37 PM.
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Re: Cooling issue
[Re: Checker]
#3054993
07/01/22 07:27 PM
07/01/22 07:27 PM
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Joined: Mar 2011
Posts: 3,101 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,101
Michigan
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7 inch top...6.5 bottom
3 row 26 inch rad
blades are half in shroud ..half out.. at idle sucks a paper towel instantly and holds it there Your pump is under driven then with those dimensions. Putting a larger lower pulley or smaller upper will increase water flow. That may be all you need.
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Re: Cooling issue
[Re: Sniper]
#3055032
07/01/22 09:17 PM
07/01/22 09:17 PM
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Joined: Mar 2011
Posts: 3,101 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,101
Michigan
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I wen tot Bouchillion's website to see how the numbers compared. Not sure they are measure the same way the OP is. In regards to the pulleys?
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Re: Cooling issue
[Re: Checker]
#3055071
07/01/22 10:10 PM
07/01/22 10:10 PM
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Joined: Jan 2003
Posts: 15,526 Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,526
Omaha Ne
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7 inch top...6.5 bottom
3 row 26 inch rad
blades are half in shroud ..half out.. at idle sucks a paper towel instantly and holds it there 3 questions Not answered What are the core dimension's H & W? How big is the fan? What is the distance between the shroud opening and tips of the fan blade? And a few more: Does the paper towel suck up to the radiator evenly across the entire core? Will i t do the same with a shop towel ( heavier) Is the Shroud sealed to the radiator all the way around? You might try taking some temp readings at various areas of the core as you may have uneven cooling for a number of reasons.
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Re: Cooling issue
[Re: A727Tflite]
#3055074
07/01/22 10:14 PM
07/01/22 10:14 PM
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Joined: May 2019
Posts: 6,324 nowhere
Sniper
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master
Joined: May 2019
Posts: 6,324
nowhere
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I wen tot Bouchillion's website to see how the numbers compared. Not sure they are measure the same way the OP is. In regards to the pulleys? Yes, they sell various pulleys so i went there to see if their dimensions matched the OP's, not that I could tell.
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Re: Cooling issue
[Re: Sniper]
#3055107
07/02/22 12:35 AM
07/02/22 12:35 AM
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Joined: Feb 2003
Posts: 10,233 Someplace you aren't
SomeCarGuy
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I Live Here
Joined: Feb 2003
Posts: 10,233
Someplace you aren't
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What about timing?
Is the engine over bored a lot?
One thing I learned after years of dealing with this stuff and reading on here, shrouds and fans aren’t that big of a deal. If you get some important stuff correct that is. You need a good condition radiator and you need a good pump. Pulleys are worth looking into, I don’t have a magic bullet set of numbers to post. Just do some research and ensure you have something that will work.
I had a 69 rr that by happen chance came with a broken shroud somebody had duct taped. That just fell on apart one day and I planned to replace it soon. Then I noticed it didn’t make a difference, so that car never got a shroud. People used to freak out about it because the gospel is you must have one. I even started running a 195 factory stat because I didn’t care for the oil turning black so quickly, that made no difference on an auto meter mechanical gauge as far as getting hot. Sat right in the stat all the time. Idle, beating on it.
Also learned on that car that you don’t have to cut the 22” core support when running a 26. Guys freak out about that.
One day I was showing the car to a family member and he said the fan was on backwards. It came that way and I never noticed or need to check as the car never ran hot. I flipped it around and it made no difference. Not even a little.
The recipe?
Stock factory built 383 hp that I poured the sand out of on the stand when I did a little going over and a new chain. Stock 26” radiator in a 22 hole Edelbrock pump Some random aluminum housing. No idea on who made it. March serpentine belt pulley set that didn’t serpentine, just ran the belt in stock pattern Stock fan and fan clutch that was good Good sharp tune up Jet hot coated headers Ran right on a 180 and a 195 stat on mechanical gauge even on 90+ humid days
I want my fair share
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Re: Cooling issue
[Re: Checker]
#3055190
07/02/22 11:15 AM
07/02/22 11:15 AM
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Joined: Oct 2005
Posts: 4,961 WI
Dcuda69
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master
Joined: Oct 2005
Posts: 4,961
WI
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motor and rad is fairly new and the issue has been from the beginning.( it doesn't streak to a higher temp in traffic..it takes a while to get to 200 . I have tried most everything except going to a HV pump vs stock and upgrading to a 4 row aluminum. I'm not enthused about electric fans but as stated in My original post the car runs cool down the road even on the hottest days so at idle it is not getting enough air through the rad or the circulation may be too slow. With the setup as is...IF the fan could pull air through the rad at the equivolent of 35 mph...it would never go over 180. Down the highway on 90 plus days the car runs at about 175-180. So....how hot does it get?? Nothing wrong with 200F
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