This might be a good read
https://www.enginebasics.com/Engine Basics Root Folder/Engine Cooling.html
9 Rules for Improving Engine Cooling System Capability in High-Perf Autos
Produced by the National Automotive Radiator Association (NARSA) and by Richard F. Crook, Transpro, Inc.
- RULE # 1 -Anything you can do to increase the coolant flow rate, within limits described, will improve heat transfer and cooling performance.
Anything you do to restrict or reduce the coolant flow rate will hurt cooling performance
- RULE #2- Anything you can do to improve airflow through the radiator core will help. Anything that blocks or slows airflow,
either before or after the radiator, will hurt.
- RULE - #3 Increasing the face area of the radiator by making the radiator larger will help.
Relocating other heat exchangers that were in front of the radiator in order to expose more radiator face area to ambient cooling air will also help.
- RULE- #4 Increasing the fin count may help, but it may hurt. Increasing the count above 16 fins per inch will almost always hurt.
- RULE- #5 A plate fin radiator and a serpentine fin radiator of the same fin count, tube size, tube rows, face area, core depth, etc.,
will have the same heat transfer performance. However, serpentine fin radiators can be made with higher fin counts,
sometimes resulting in improved performance.
- RULE-#6 Louvered fins provide greatly improved heat transfer with some increase in cooling air restriction.
Changing from a non-louvered radiator to a louvered radiator core almost always improves heat transfer performance.
- RULE- #7 Adding a row of tubes may help, but it may hurt by increasing cooling air restriction and reducing the coolant flow rate in the tubes.
If the cooling airflow has been increased over the original installation, adding a row or two will probably help in this situation.
Increasing the number of rows beyond 4 in a louvered fin core will almost always hurt.
- RULE- #8 Adding two rows of tubes without increasing the coolant flow rate
(Bigger pump or turning the old pump faster) will probably reduce performance because of low coolant flow rate in the tubes.
Reducing the tube size or going to dimple tubes may help.
Increasing the coolant flow rate will surely help.
- RULE- #9 For maximum heat transfer performance in warm climates, use water as a coolant with an additive
to provide a corrosion inhibitor and water pump lubricant.
For winter service, use a 50/50 water to ethylene glycol coolant solution that includes corrosion inhibitors and a pump lubricant.
https://www.enginebasics.com/Engine Basics Root Folder/Engine Cooling.html
9 Rules for Improving Engine Cooling System Capability in High-Perf Autos
Produced by the National Automotive Radiator Association (NARSA) and by Richard F. Crook, Transpro, Inc.
- RULE # 1 -Anything you can do to increase the coolant flow rate, within limits described, will improve heat transfer and cooling performance.
Anything you do to restrict or reduce the coolant flow rate will hurt cooling performance
- RULE #2- Anything you can do to improve airflow through the radiator core will help. Anything that blocks or slows airflow,
either before or after the radiator, will hurt.
- RULE - #3 Increasing the face area of the radiator by making the radiator larger will help.
Relocating other heat exchangers that were in front of the radiator in order to expose more radiator face area to ambient cooling air will also help.
- RULE- #4 Increasing the fin count may help, but it may hurt. Increasing the count above 16 fins per inch will almost always hurt.
- RULE- #5 A plate fin radiator and a serpentine fin radiator of the same fin count, tube size, tube rows, face area, core depth, etc.,
will have the same heat transfer performance. However, serpentine fin radiators can be made with higher fin counts,
sometimes resulting in improved performance.
- RULE-#6 Louvered fins provide greatly improved heat transfer with some increase in cooling air restriction.
Changing from a non-louvered radiator to a louvered radiator core almost always improves heat transfer performance.
- RULE- #7 Adding a row of tubes may help, but it may hurt by increasing cooling air restriction and reducing the coolant flow rate in the tubes.
If the cooling airflow has been increased over the original installation, adding a row or two will probably help in this situation.
Increasing the number of rows beyond 4 in a louvered fin core will almost always hurt.
- RULE- #8 Adding two rows of tubes without increasing the coolant flow rate
(Bigger pump or turning the old pump faster) will probably reduce performance because of low coolant flow rate in the tubes.
Reducing the tube size or going to dimple tubes may help.
Increasing the coolant flow rate will surely help.
- RULE- #9 For maximum heat transfer performance in warm climates, use water as a coolant with an additive
to provide a corrosion inhibitor and water pump lubricant.
For winter service, use a 50/50 water to ethylene glycol coolant solution that includes corrosion inhibitors and a pump lubricant.