Cooling Advice
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Cooling Advice
My mild 408 is working a bit hot, nothing to worry about, i think it has something to do with the stock fan, anyways im planing on going to an electric fan, I havent measured my radiator, its an aluminum 2" , 2 rows radiator with big tanks. What i wanna know is whats the best position or amounts of fan to use. Since ive heard 2 small fans y in one side hurts flow I thought of:
1. getting 1 16" S blade fan mounted on the inside and pulling the air through the
radiator.
2. getting 1 16" S blade fan mounted on the outside and pushing air through the
radiator.
3. Getting 2 of em on on the outside pushing and one on the inside pulling.
the fans are rated as follows:
CFM
Pull-2400-2700
Push 2200-2500
I like the 3 option but will that realy be efective?
What do you thig about cfm ratings?
Also what do you think about S blades?
Thanx
1. getting 1 16" S blade fan mounted on the inside and pulling the air through the
radiator.
2. getting 1 16" S blade fan mounted on the outside and pushing air through the
radiator.
3. Getting 2 of em on on the outside pushing and one on the inside pulling.
the fans are rated as follows:
CFM
Pull-2400-2700
Push 2200-2500
I like the 3 option but will that realy be efective?
What do you thig about cfm ratings?
Also what do you think about S blades?
Thanx
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From: chicago burbs
does it get hot while you're driving or while sitting idle? once you get up about 35mph and over the fans aren't in play anymore, it's just road speed moving air through the radiator and more fan won't help, it's a radiator/engine issue. getting hot at idle or very low road speeds is a fan/shroud issue.
what thermostat are you using?
what thermostat are you using?
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@ Iddle, the engine has like 20 miles on it, its still beaking in, It has the robershaw 180 thermostat, i read the hole discution about them on an older thread.
It takes like 10 mins to get to 176, its stays there for 20 min, then it starts climbing to 200 which i think is too hot, it seams wierd but maybe a breakup thing..
Besides the iddle issue, i wanted to upgrade to electric fans, so what to you think ?
It takes like 10 mins to get to 176, its stays there for 20 min, then it starts climbing to 200 which i think is too hot, it seams wierd but maybe a breakup thing..
Besides the iddle issue, i wanted to upgrade to electric fans, so what to you think ?
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From: chicago burbs
200* ain't hot at all. these engines run 100% better at temp rather than cold, which i would call anywhere below 200* - 210*
if it climbs up anywhere near 230* i'd take notice but 200* sounds fine to me...
advanced or retarded timing can affect running temp, what's the timing set at?
maybe fatten up the idle mixture a tad, lean runs hotter than rich
if it climbs up anywhere near 230* i'd take notice but 200* sounds fine to me...
advanced or retarded timing can affect running temp, what's the timing set at?
maybe fatten up the idle mixture a tad, lean runs hotter than rich
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timming is at 12 btc, I havent tried messing with the timming, yeah ive noticed running richer on iddle makes it run cooler.
Anyways on the electric fans, would you use two of em or one? running one in the front may actually be worse on the highway right?
Anyways on the electric fans, would you use two of em or one? running one in the front may actually be worse on the highway right?
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From: chicago burbs
i wouldn't. shut it off if it's gonna sit sit idle for any time long enough to get hot. the stock engine driven fan is dead reliable and effective with the shroud in place.
i've been down the 'electric fan road' for little/no gain, running hot until i got the system dialed in and risking overheating on a sensor, relay and electric motor. i wish kept my stock shroud. when i get my blower build done there won't be room for my electric fan and shroud assy, it'll be running an engine driven flex and i'll need to make a new shroud for it. and it won't sit idling. just my preference having tried both ways. if you really NEED to blow the $ on a fans, i'd use a 2 stage puller. 2 smaller fans that come on at different temps. @ 200* you're fine the way it is, i'd save the $ for gas, oil & tires
i've heard that a stock Ford fan from a Taurus is the 'big go', mine came from a Pontiac 6000 and pulls like a mother. it was getting the sensor right that gave me the most trouble, but i guess those expensive kits they have these days come with everything
i've been down the 'electric fan road' for little/no gain, running hot until i got the system dialed in and risking overheating on a sensor, relay and electric motor. i wish kept my stock shroud. when i get my blower build done there won't be room for my electric fan and shroud assy, it'll be running an engine driven flex and i'll need to make a new shroud for it. and it won't sit idling. just my preference having tried both ways. if you really NEED to blow the $ on a fans, i'd use a 2 stage puller. 2 smaller fans that come on at different temps. @ 200* you're fine the way it is, i'd save the $ for gas, oil & tires
i've heard that a stock Ford fan from a Taurus is the 'big go', mine came from a Pontiac 6000 and pulls like a mother. it was getting the sensor right that gave me the most trouble, but i guess those expensive kits they have these days come with everything
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another thing, what about S blades vs straight blades, ive heard S blades move more air and work quiet and ive heard straight moves more air but S blades work quieter, any truth about this?
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From: Albuquerque
"S" blades are quiter but move less air. I have a 16" puller with a home built shroud and it works well but is noisy and draws a lot of current. Pullers are more efficient than pushers.
When I do occasionally get to 200 degrees the A/C doesn't work well. I like to stay below 195.
There are two different Tarus fans. One is two speed the other only one.
When I do occasionally get to 200 degrees the A/C doesn't work well. I like to stay below 195.
There are two different Tarus fans. One is two speed the other only one.
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From: Colorado
Make sure to wire the electric fan up to a relay. If you wire directly to a switch, the fan will 'generate' its own power while turned off and you are driving. (dont believe me, hook up an indicator light to your on / off switch).
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Thanx , i dont really care about noise, my car is already making plenty of it, so im going with straight blades, a puller inside and a pusher outside (for the a/c).
You are right colo ford i knew about the relay.
youre right too mark, that would be the easiest solution, but im not really doing the fan swap to save cash or to solve overheating, its an experiment, i wanna try the electric fan, i have a direct fan connected no fan clutch or anything.
You are right colo ford i knew about the relay.
youre right too mark, that would be the easiest solution, but im not really doing the fan swap to save cash or to solve overheating, its an experiment, i wanna try the electric fan, i have a direct fan connected no fan clutch or anything.
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From: chicago burbs
yeah that was hilarious... early on in my electric fan 'experiment' i had the fan direct wired for a test but still with a relay. i went to shut the engine off and the fan motor became a generator and kept the engine running. i had to disconnect the battery to get the engine to shut off, and when it did you could tell that the coil was losing voltage as the fan motor slowed down. it's still possible to get generator run-on depending where you connect the fan relay to power and how it's wired. i think i had it tapped to the back of the alternator Bat terminal for location purposes, didn't work real good... or maybe too good?
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From: southeren Oh
I have a E-fan on my 400 with good results. I used one of the $30 fleaby specials fans. straight blades. I hooked mine to an adjustable thermos and it mounted to pull.
I have it set to kick on at 195. This way going down the road it mostly does not run.
Mines wired with a big a relay. If you run a fan a great amount you just add wear and tear to the alt.
I only went this route on mine because it had a direct drive fan. (no fan clutch)
I have it set to kick on at 195. This way going down the road it mostly does not run.
Mines wired with a big a relay. If you run a fan a great amount you just add wear and tear to the alt.
I only went this route on mine because it had a direct drive fan. (no fan clutch)
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