quick cooling question
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Mountain Pass
Joined: Mar 2014
Posts: 147
Likes: 5
quick cooling question
hi all!
just bought a 4 row aluminum radiator and was wondering would i also need a high flow thermostat and high flow water pump to compensate for the larger radiator? or would a stock thermostat and water pump just be fine.
truck is a 96 f250 crew cab short bed 7.5L 4x4 automatic.
just bought a 4 row aluminum radiator and was wondering would i also need a high flow thermostat and high flow water pump to compensate for the larger radiator? or would a stock thermostat and water pump just be fine.
truck is a 96 f250 crew cab short bed 7.5L 4x4 automatic.
Tuned
Joined: Jul 2023
Posts: 465
Likes: 51
The original one-row radiator on my 1991 F250 5.0L was leaking pretty badly a couple months after I bought the truck in spring of 2022. I was surprised at times the engine wasn't overheating amidst the leaks. I ordered a new FB222 two-row radiator and installed it with new hoses, and I replaced both my temperature sensors at the same time. I did not change my water pump or thermostat, since there didn't appear to be any leaks in either spot.
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Mountain Pass
Joined: Mar 2014
Posts: 147
Likes: 5
The original one-row radiator on my 1991 F250 5.0L was leaking pretty badly a couple months after I bought the truck in spring of 2022. I was surprised at times the engine wasn't overheating amidst the leaks. I ordered a new FB222 two-row radiator and installed it with new hoses, and I replaced both my temperature sensors at the same time. I did not change my water pump or thermostat, since there didn't appear to be any leaks in either spot.
Hotshot
Joined: Jun 2015
Posts: 12,871
Likes: 2,445
We both answered your question. Just because you installed a larger capacity radiator does not mean you need to increase how much faster the water circulates through the engine.
Tuned
Joined: Jul 2023
Posts: 465
Likes: 51
I expanded my cooling capacity with the two-row radiator, just like you are expanding your cooling capacity with the four-row radiator. I didn't change anything, and I would imagine you may not need to. Now with my two-row radiator, I did have to change my original fan shroud to one from a 92-96 F-Series truck.
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Hotshot
Joined: Jul 2020
Posts: 10,522
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From: Near Salt Lake City
You will be fine with the stock parts working with the gigantor 909 radiator
I did the same on MY 150 van and love the running cooler
My big honkin radiator is working fine for me with a factory Ford 195 stat and the original H2O pump
I did the same on MY 150 van and love the running cooler
My big honkin radiator is working fine for me with a factory Ford 195 stat and the original H2O pump
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Laughing Gas
Joined: Oct 2020
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You have to be careful with "high flow" components in your cooling system. If you get the flow going to fast, the water is unable to absorb the heat from the engine and it completely defeats the purpose of the cooling system. If anything, with the "gigantor 909" radiator, you almost want to slow flow to allow maximum heat exchange.
Logistics Pro
Joined: Nov 2013
Posts: 3,928
Likes: 1,199
From: Mojave, Ca
Don't underestimate the importance of a good fitting fan shroud. The fan shroud needs to touch the radiator around the entire parameter. Spend an hour with weatherstripping or split-rubber-hose to minimize the gaps in the shroud. Your temps will go down and your mpg will go up with a tight fitting shroud.
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