overheating is back

[eternal21]

"Bill" from Ron Davis racing also told me this the other day:

If you put a 2nd fan on the front side of the radiator, it blocks airflow and probably only about 30 percent of the airflow makes it through the radiator. Not a good choice.

I've heard differing opinions on that one, Sue. We have members on this forum who have alleviated their overheating symptoms by installing a 2nd fan. My truck doesn't overheat at all with the fans on, so I'd be hard pressed to believe the add'l fan is causing an issue w/blockage. It only overheats when the a/c is on.

Unless something has been modified, that won't do anything - the hood is solid metal underneath the insert.

Good to know. Guess I'll take the entire hood off

[VX KAT]

Would a person have to account for some flex in the blades when they're turning? Taking their orientation into account, and the fact that they're plastic, it seems to me that once they start spinning, the act of cutting through the air would have them flexing "inward" toward the radiator. Do they appear to stick out of the shroud the same distance when the engine is running as they do when it's not?

I can see your point, when it's spinning it's pretty hard to estimate how far out those blades are.

I've heard differing opinions on that one, Sue. We have members on this forum who have alleviated their overheating symptoms by installing a 2nd fan. My truck doesn't overheat at all with the fans on, so I'd be hard pressed to believe the add'l fan is causing an issue w/blockage. It only overheats when the a/c is on.

...yeah, certainly adds to the confusion in trying to pinpoint a cause doesn't it...oh joy, sounds like fun times ahead....

[Paul_A]

Just Power washed my rad.... couldn't believe how much crud came out!