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Cooling fan questions

 
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Quasi-Traction
"I have petals"


Joined: 24 Oct 2005
Posts: 3873
Location: stumptown

1986 Chevrolet Camaro Berlinetta

PostPosted: Fri Jan 16, 2009 12:48 pm    Post subject: Cooling fan questions Reply with quote

My car is coming back together, and I'm trying to get everything dialed in before dyno.

I was previously running a single Electric fan which came with the car after my clutch fan died before Cows last year. Right now I have a very simple setup with a relay, 12v power and the ground switch in the head which turns the fans on. Unfortunately, its a stock TBI switch and it doesn't kick the fans on until 215 degrees. Much too hot for my motor.

I've been looking at this:

http://www.partsamerica.com/ProductDetail.aspx?MfrCode=HAD&MfrPartNumber=3652&PartType=600&PTSet=A

I have a 170 degree T-stat in there now. If I understand the description, it would be pre-set to kick the fan on at 185 degrees? How accurate are the probe type that go through the radiator fins? What are some of you guys running?

Also was checking this out:

http://www.partsamerica.com/ProductDetail.aspx?MfrCode=HAD&MfrPartNumber=3653&PartType=600&PTSet=A

I already have the in-head sensor, and a basic wiring harness already. Would this allow me to add adjustability, and have the in-head switch ground at whatever temp I set it at?

Thanks in advance for your input guys.

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iansane
Member


Joined: 16 Jan 2004
Posts: 5742
Location: Bothell

1991 Pontiac Trans Am

PostPosted: Fri Jan 16, 2009 4:58 pm    Post subject: Reply with quote

Quick google search turned up this thread @ TGO

http://www.thirdgen.org/techboard/tpi/258087-coolant-fan-switch-part.html

Gives a couple part numbers for fan switches that turn on at 200 and off at 185.

I'd rather run one switch in the head that grounds a relay than those hokey probe-through-the-rad type. But I think it'd just my OCD hating clutter like that. Laughing

DirtySteve ran one of those adjustable kits from Hayden from Schucks (the one you posted the link to) in the Mudbathfinder and killed two of them. But I'm sure your camaro won't be seeing the extremes the pathy does. Very Happy

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alloy
T56 Elitist


Joined: 25 Jan 2004
Posts: 1716
Location: Vancouver, WA

1987 Chevrolet Camaro IROC-Z

PostPosted: Fri Jan 16, 2009 7:48 pm    Post subject: Reply with quote

iansane wrote:

I'd rather run one switch in the head that grounds a relay than those hokey probe-through-the-rad type.


I'm with stupid

I'm running a hayden #3651 Cost's more but it's a screw in type and it's adjustable. It's easy to adjust. Just wait til the engine gets to the temp you want, turn the little adjusting screw til the fans come on and your set. But don't try to run two full size fans off it. Won't hold up. Ask me how I know that. Now I'm using this switch kit to turn on a 75 amp bosch relay. The adjustability is great. I turn it up a little during the winter, and then lower to get the fans on earlier in 90 plus degree heat. Couldn't be happier with it now.

http://shop.oreillyauto.com/productdetail.aspx?MfrCode=HAD&MfrPartNumber=3651


http://shopping.aol.com/hayden-inc-3651-cooling-fan-control/70480578
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