tenesu wrote:
adding restrictors slows water flow and also inhibit cooling . ... i would think the pump needs to work and be matched more or less with both the radiator and fan(s) ... if the radiator needs more time to dissipate heat then the problem would most like;y be with radiator and fan efficiency ...
That is false. Adding a restrict or in no way diminishes cooling if used when needed. It will allow the water to slow down if necessary and transfer the heat better and depending on its placement it can provide higher pressures in the block which helps with cooling as well. Also, there is difference between high pressure and high flow.
Also, if you water is flowing too fast to provide effective heat transfer to the radiator upgrading the fan will do noting but pull power from the engine. Example: I was over heating on the highways when I had the highflow pump. At 70 mph the air being forced over the radiator (the whole radiator not just where the fan is) is far greater than any upgraded fan can pull.
I only drilled one hole, and made sure it was located at the top most (12 o'clock) position when installed.
Thanks. I did a little reading and have read all sort of different opinions on it. It seems a lot of guys drill two holes, 1/8"-3/16" or so and place them at 12 and 6.
This is what I do, to make the system self-purging.
If you're worried about low-speed/low-RPM cooling, the two best things you can do are:
1) Keep your radiator fins clean and straight. You can get a "comb" for the latter part, and the former is easy enough.
2) Find a product by RedLine called "Water Wetter," and add that to your system. Amazing how well that stuff works...
I only drilled one hole, and made sure it was located at the top most (12 o'clock) position when installed.
Thanks. I did a little reading and have read all sort of different opinions on it. It seems a lot of guys drill two holes, 1/8"-3/16" or so and place them at 12 and 6.
This is what I do, to make the system self-purging.
If you're worried about low-speed/low-RPM cooling, the two best things you can do are:
1) Keep your radiator fins clean and straight. You can get a "comb" for the latter part, and the former is easy enough.
2) Find a product by RedLine called "Water Wetter," and add that to your system. Amazing how well that stuff works...
Yes, I ran Royal Purple "Purple Ice" before I blew up my last 4.0 and noticed a slight difference, I may try the water wetter when I install this fresh engine.
