CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

The restoration/modification of Daisy.

So I'm kinda considering a mechanical fan and clutch set up. I've tried like hell to run electric fans on my truck and it just keeps fighting me it seems. Last summer the AC shop told me that I wasn't getting enough air flow through the grille with my old fans so I put these new ones on there and after about two weeks of running them I honestly can't tell a difference. I know if I took it back to the AC shop right now they would still tell me the same thing, not enough airflow. A mechanical clutch and fan set up will only cost me about $75, I can yank shroud for a square body out of a junkyard and figure out a way to mount it up, for next to nothing. Then if needed to, I could throw one of my 14 inch fans in front of the condenser as a pusher to help out when the AC is running.

Just thinking out loud. Er, in text....

Of course there's always the grinder/tube buggy option. You got to admit, my drivetrain would kick ass in the tube frame.
 
So I'm kinda considering a mechanical fan and clutch set up. I've tried like hell to run electric fans on my truck and it just keeps fighting me it seems. Last summer the AC shop told me that I wasn't getting enough air flow through the grille with my old fans so I put these new ones on there and after about two weeks of running them I honestly can't tell a difference. I know if I took it back to the AC shop right now they would still tell me the same thing, not enough airflow. A mechanical clutch and fan set up will only cost me about $75, I can yank shroud for a square body out of a junkyard and figure out a way to mount it up, for next to nothing. Then if needed to, I could throw one of my 14 inch fans in front of the condenser as a pusher to help out when the AC is running.

Just thinking out loud. Er, in text....

Of course there's always the grinder/tube buggy option. You got to admit, my drivetrain would kick ass in the tube frame.

Which wrecking yards around here are decent for picking through? I haven't been to one yet.
 
Mechanical fans will definitely pull more air, but there are vehicles running electric fan setups and doing.. I don't remember what you put in there but I know my g8 (LS engine) uses electric and many of the hemi cars use them...

Is the truck temp running normal?

There's gotta be something else going on. Maybe a bad orifice tube causing pressures on the high side to be too high, maybe some debris caught in it... Maybe the condenser isn't big enough or efficient enough.

You're running 134 right? Maybe consider another gas, there is other stuff out there.
 
Mechanical fans will definitely pull more air, but there are vehicles running electric fan setups and doing.. I don't remember what you put in there but I know my g8 (LS engine) uses electric and many of the hemi cars use them...

Is the truck temp running normal?

There's gotta be something else going on. Maybe a bad orifice tube causing pressures on the high side to be too high, maybe some debris caught in it... Maybe the condenser isn't big enough or efficient enough.

You're running 134 right? Maybe consider another gas, there is other stuff out there.

No, the truck overheats when running the AC when pulling hills on the highway.

Either way the AC is dead and someone else is fixing it. Everything was new last September, condenser, compressor, front evaporator, orifice, expansion valve, etc...

No, it's charged with R12, well it was before the pop-off valve let it all out.

I know there are lots of vehicles out there running around the desert with electric fans. But I've currently got over $600 into my radiator and fan set up and my truck still gets hot. The rows in the new radiator are stacked a lot tighter and I don't think these electric fans are pulling hard enough.
 
No, the truck overheats when running the AC when pulling hills on the highway.

That's interesting, at fwy speed the fan shouldn't be doing any work, yet you're still having cooling problems. Where is that rad from, don't remember and too lazy to go back? Almost sounds like there is an airflow issue but I wonder if the rad isn't actually blocking airflow - too dense. Did the GM (LS/LQ) pickups get mechanical fans?
 
That's interesting, at fwy speed the fan shouldn't be doing any work, yet you're still having cooling problems. Where is that rad from, don't remember and too lazy to go back? Almost sounds like there is an airflow issue but I wonder if the rad isn't actually blocking airflow - too dense. Did the GM (LS/LQ) pickups get mechanical fans?

It's from Champion radiator. I think the shroud/fan setup isn't enough. I wish I had come to that conclusion before spending as much as I did, oh well. Maybe I'll get it right with a clutch fan setup. It'll be the cheapest version yet.

And yeah they did. My water pump pulley is threaded for a clutch.
 
Last edited:
Mechanical's pull a ton more cfm than electrics when theres any kind of restriction or head pressure. If that doesn't do it, I'd say that's not the problem.

I've got a ron davis on my old Firebird. When those fans kick on, you can feel the breeze come out from under the car and burn my shins it actually kicks up a little bit of dust off the ground. Are you getting that kind of breeze from the electrics you have on now?
 
Mechanical's pull a ton more cfm than electrics when theres any kind of restriction or head pressure. If that doesn't do it, I'd say that's not the problem.

I've got a ron davis on my old Firebird. When those fans kick on, you can feel the breeze come out from under the car and burn my shins it actually kicks up a little bit of dust off the ground. Are you getting that kind of breeze from the electrics you have on now?

That's what I've always heard, time to give up on the cool factor of electric fans.

Oh hell no.
 
i hear people say that putting hood vents at the back of the hood wont help, but from my personal experience I put hood vents on my Cherokee and the engine temps dropped by 10-15 degrees
 
The cowl area on our trucks is a high pressure area. Air will be forced into the engine compartment from there - not vented out.
 
The cowl area on our trucks is a high pressure area. Air will be forced into the engine compartment from there - not vented out.

At highway speeds, yeah. I still haven't finalized where I'm venting the hood at but I'm going to stop and look for some of those grill sheets.
 
Top Bottom