Best "Sweet Spot" on a radiator?

[idahovette]

@CalSgt you really know how to diffuse the situation

 

[Craig Nedrow]

Don't know, Perry might be a craft beer drinker.....just sayin'. Went from a 325 horse 350 to a 375 454 same OLD radiator, never a problem and I hauled lots of hay in 90+ heat in central WA ST. With the new engine pushing 650hp, gonna start with the same radiator, we shall see. Most important thing Aurora mentioned, good shroud that fits tight. I hate cussin!!!

 

[Camar068]

So many people here hate electric fans. Personally though, I like them. However, I very much prefer factory fans from a later model vehicle. Aftermarket fans are overrated.

With that said, the best place to put a single fan is anywhere within the core. There kinda needs to be a shroud though. And one that promotes flow through the core, not like some of the aftermarket ones that essentially make large areas of a radiator core a dead zone.

same, it's peace of mind having a controller and 2 fans. One fails, it switches on the other.

 

[bucket]

same, it's peace of mind having a controller and 2 fans. One fails, it switches on the other.

I've always ran mine in pairs. One day I'll get fancy and have a temp sender for each fan, so one can come on later than the other, if needed. Still both with a manual override though.

 

[Camar068]

I've always ran mine in pairs. One day I'll get fancy and have a temp sender for each fan, so one can come on later than the other, if needed. Still both with a manual override though.

might be able to get the controller from an early 2000's chevy and put it to work with a few mods. 3 relay system so if one fails it switches to the other fan. Actually I think if 2 relays fails it will switch to one fan.....don't hold me to it....been a while since I looked at the schematic.

 

[SquareRoot]

The easiest way is to improvise.

This setup is quick, easy, and doesn't even require any wiring! - When you drive, the fan automatically spins by itself!

Except the guy in the picture put the fan in BACKWARDS! It's not going to work like that - it will blow the air the wrong way!

Your an idiot.

 

[SquareRoot]

I'm out

 

[bucket]

Your an idiot.

"You're"

 

[edgephoto]

I would make a shroud out of aluminum the covers the radiator, then I would mount my fan(s) in that. This way the fans actually pull air through the radiator and it mounts without shoving those cheesy plastic things through the fins. You can run one big fan or two small ones. You can buy fan controllers to stage the fans or you can use multisided fans. On full speed most electric fans are really noisy. If you have a lot of area on your shroud cut hole in it and put flaps over the holes. When driving air flow will open the flaps but when stationary the flaps are closed and air gets pull through the core.

If you want to get real fancy wire a speed signal so when moving above say 5-10mph the fans won't run.

 

[Radiohead]

No matter the number of fans, without a good shroud you're wasting your time. If you want to dissipate heat, ya gotta pull air through the entire radiator for maximum effect. Fluid dynamics and all that

 

[Rusty Nail]

YUNO leave it stock?

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i hate electric fans

 

[Ricko1966]

If the electric fan is against the radiator no shroud is required. Most aftermarket shrouds actually block tons of air flow. The fan motor itself blocks air flow. And past the effective speed of the fan,the fan blades themselves actually block air flow. If the fan can only pull air at a speed of 20 mph at 30mph they are blocking not pulling. Look at a good factory electric set up. A good factory setup will have a fan that is serious overkill,draws lots of amps and there are flaps in the shroud that open at road speed.

 

[edgephoto]

If the electric fan is against the radiator no shroud is required. Most aftermarket shrouds actually block tons of air flow. The fan motor itself blocks air flow. And past the effective speed of the fan,the fan blades themselves actually block air flow. If the fan can only pull air at a speed of 20 mph at 30mph they are blocking not pulling. Look at a good factory electric set up. A good factory setup will have a fan that is serious overkill,draws lots of amps and there are flaps in the shroud that open at road speed.

With a shroud you pull air through the entire radiator. If against the fins you are only pulling air through the section covered by the fan.

 

[Hilllbilly]

sweet spot on a radiator?



G spot?

 

[Radiohead]

sweet spot on a radiator?



G spot?

Is that why the vans were G series?