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Cole Induction Hood 1974 question

Tepot

Well-known member
Joined
Sep 13, 2005
Messages
307
Location
Moncton, NB, Canada
Corvette
1974 Metalic Blue L-48 Coupe 4 speed
Hi,

I was cleaning and sanding the interior part of my cole induction hood today and when I was taking the hood brackets and cole induction cover, I've found out that the cole induction has a little motor that opens the vent and closes the vent. The only thing I can't understand is " How the Hell it works? " It's not using vaccum. It's connected to an electrical wire. So what tells the cole induction to open if it's not vaccum. is there a switch somewhere.

Right now I don't even know if that thing still works. I'm not using the stock air cleaner so it's not gonna work like it's supposed to anyways. I'm thinking mabee remove the vent doors to keep it open at all time and put the cover back in place. that way it will always bring cold air inside.

I don't drive the car in winter time so why those air vent doors should be closed anyways?

Can anyone explains how it works?

I got a picture here of the cole induction system.

coleinduction1.jpg
http://www.4speed.greatermonctoncorvetteclub.com/images/coleinduction1.jpg

and here it is with the air vents open

coleinduction2.jpg


Here a picture of before I've started the hood and another one with the hood in progress of sanding. I've removed all those rusted clips for the insulation. I will not put them back. Don't need any insulation here in Canada. ahahah It's just not warm enouph to cause any damage.

Hood1.jpg


Hood2.jpg
 

Tom73

Well-known member
Joined
Aug 21, 2001
Messages
1,427
Location
Round Rock, TX
Corvette
73 LS4 Coupe - 04 CE Conv
The cowl induction flapper is controled by a switch up above the gas pedal. It is connected to the upper linkage. At WOT it engages the switch which opens the flapper. Also if you have an automatic it is the kick down switch to drop the trans into a lower gear.

Look here for more info: http://www.corvetteforum.net/c3/vette73/cowlintake.htm

tom...
 

Vettehead Mikey

Well-known member
Joined
Aug 26, 2003
Messages
3,486
Location
Not that far from Ottawa
Corvette
1973 Coupe
The hood insulation is to reduce engine noise, nothing to do with heat damage to the hood. Similarly, the flapper valve in the induction was closed at anything less than full throttle for the same reason.
 

Tepot

Well-known member
Joined
Sep 13, 2005
Messages
307
Location
Moncton, NB, Canada
Corvette
1974 Metalic Blue L-48 Coupe 4 speed
The cowl induction flapper is controled by a switch up above the gas pedal. It is connected to the upper linkage. At WOT it engages the switch which opens the flapper. Also if you have an automatic it is the kick down switch to drop the trans into a lower gear.

Look here for more info: http://www.corvetteforum.net/c3/vette73/cowlintake.htm

tom...

yes sir !!!. Thanks for the link. exactly what I needed. I think I'll check the switch and will try it on a Battery to make sure it works and if it does, I'll leave it in there so it works like it should.
 

Tepot

Well-known member
Joined
Sep 13, 2005
Messages
307
Location
Moncton, NB, Canada
Corvette
1974 Metalic Blue L-48 Coupe 4 speed
Hi guy's

I need your opinion on this. Should I even consider puting this cole induction system back in the hood. I'm not using the stock air cleaner anymore anyways. so it won't suck any air from the top. I have the edelbrock 14" air cleaner now. like in this picture.

http://4speed.greatermonctoncorvetteclub.com/images/Engineafter1.jpg

Let me know what you would do. I'm actually cleaning all the hood and wouldn't want any wires if I don't need too.
 

Tom73

Well-known member
Joined
Aug 21, 2001
Messages
1,427
Location
Round Rock, TX
Corvette
73 LS4 Coupe - 04 CE Conv
I need your opinion on this. Should I even consider puting this cole induction system back in the hood. I'm not using the stock air cleaner anymore anyways. so it won't suck any air from the top. I have the edelbrock 14" air cleaner now. like in this picture.

http://4speed.greatermonctoncorvetteclub.com/images/Engineafter1.jpg

Let me know what you would do. I'm actually cleaning all the hood and wouldn't want any wires if I don't need too.
With the cowl system removed you have a big hole at the back of the hood. Engine heat and toxic fumes can exit that hole to the cowl air intake for the interior of the car. Can increase interior heat and introduce bad fumes into the interior.

Either put the flapper back and keep it closed or reinstall the correct air intake system for your car.

tom...
 

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