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So I wired my manual fan switch!

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Old 07-06-2006, 04:22 PM   #1
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Default So I wired my manual fan switch!

I will get pictures later. I ran a red wire from the blue wire for the highspeed fan on the obd2 port, through the firewall, under the dash to my center console, with a inline 1/2 watt 47 ohm resistor inline, then to a switch, which when switched on grounds it out. It worked GREAT, but how do I use this to get the best performance I can get. Like what temp should I keep it at. I have a 160stat
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1996 Trans-Am - 5.7L LT1 - T56 -- [MySpace] -- [Idle/Rev Clip]
Lunati 237/242@.050 .525/.525 110 LSA, Ported heads, Comp 29618 springs, Tpis LT's, TD's, Lingenfelter CAI, 160 Stat, NGK tr-55's, Taylor Wires, pro5.0
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Old 07-06-2006, 04:37 PM   #2
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1996 Trans-Am - 5.7L LT1 - T56 -- [MySpace] -- [Idle/Rev Clip]
Lunati 237/242@.050 .525/.525 110 LSA, Ported heads, Comp 29618 springs, Tpis LT's, TD's, Lingenfelter CAI, 160 Stat, NGK tr-55's, Taylor Wires, pro5.0
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Old 07-07-2006, 02:31 PM   #3
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Looks like a very nice installation job.

As to what temperature, the answer is "it depends."

If you want to go as fast as possible, your objective is to get the car cooled down as much as possible between runs. The 160 thermostat and fan switch will help you a lot. Basically whenever the car is hot, you want to run the fans as much as you safely can w/o running your battery dead. If this is the way you decide to go, carry a set of jumper cables to be safe.

For bracket racing where you want your ¼-mile times to be as consistent as possible, you want to keep your temperate as consistent as possible. It doesn’t particularly matter what you pick as long as it’s the same each time. The fan switch is also very helpful in managing your temp as long as you watch your gauge.

However, the factory water temperature gauge is a totally worthless piece of crap. I had heard this before but never realized how bad it is until I installed a digital gauge last week. Until last fall, I always ran as cold as possible but switched to running at full temperature after I replaced my valve springs because CompCam’s instructions had very emphatic warnings not to exceed 4,000 rpm’s until after the car has been warmed up.

My prior observation had been that the stock gauge gradually rises from cold until it reaches operating temperature at which was point it settles in pointing very steadily slightly left of straight up. I figured that was about 180°. WRONG!!! What I now know is that it reaches straight up at about 170°. After that, it doesn’t matter what the real temperature is. The needle will continue to sit in the same spot for anything up to 230°. As an addicted bracket racer I was really pissed. My car had been very consistent until this year and now I know why my times have recently been all over the place.

So, I would suggest keeping the temp below 170 (where the stock gauge has some value) or else investing in an aftermarket temperature gauge if you want to run warmer.

Last edited by Mr Ed; 07-07-2006 at 02:39 PM.
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Old 07-07-2006, 02:49 PM   #4
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You have a 99+ car don't you? I hear thats when the dummy gauges started. Thanks for the compliments man!

Water gauge eh? I guess I can add that to the list. I want to get a 3 gauge A piller pod, so far its gonna be a Water Gauge, A/F wide band, and, um, idk the third one yet.
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1996 Trans-Am - 5.7L LT1 - T56 -- [MySpace] -- [Idle/Rev Clip]
Lunati 237/242@.050 .525/.525 110 LSA, Ported heads, Comp 29618 springs, Tpis LT's, TD's, Lingenfelter CAI, 160 Stat, NGK tr-55's, Taylor Wires, pro5.0
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Old 07-07-2006, 03:09 PM   #5
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Quote:
Originally Posted by Sgt. Spuds
You have a 99+ car don't you? I hear thats when the dummy gauges started.
Yup. It's a 1999. I've been venting about it for the past week. I figure it cost me a several hundred dollars in winnings before I figured it out.

Last edited by Mr Ed; 07-07-2006 at 03:23 PM.
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