[WesternStarSCR]

Originally Posted by Arragonis

Pondering further I think we have seen these types of blocks here before haven't we - sliding covers with grill holes spring to mind, operated by cable and returned with a spring or a cable going in the opposite direction. Something using a warm air style heating vent may be possible too.

Yes sir... I have been following some DIY builds of these grill shutters too.

Power Door lock actuators seem to be the key to inexpensive actuation for Piwoslaw (sliding home made shutter) as well as Weather Spotter (using heat registers).

Piwoslaw's:

http://ecomodder.com/forum/showthrea...tml#post137288

http://ecomodder.com/forum/showthrea...tml#post315612


Weather Spotter's: (This is the one I am modeling mine after):

http://ecomodder.com/forum/showthrea...tml#post195265

http://ecomodder.com/forum/showthrea...tml#post198565


I will be using 3 moveable vents like Weather Spotter's (he used 2 of them)across my bottom grill.

The 2 on either side will be using the AC Clutch relay to activate a power door lock pulse module, to send a short burst of power to a door lock actuators. You can not keep door lock actuators constantly powered, hence the pulse relay designed for this use.

My center opening shutter will be using an aftermarket Fan control module:

Originally Posted by orangustang

A fix for this could be to use a secondary adjustable thermostatic fan controller such as this one: Flex-a-lite 31147 - Flex-a-lite Adjustable Electric Fan Controllers - Overview - SummitRacing.com

...where you put a probe into your radiator fins near the hottest part. It is adjustable, and is designed to turn on and off a fan based on temp. It will also power a pulse relay to activate the center grill actuator.

This will be something I work on over the winter.

The Cruze example, and the work & ideas of Oil Pan 4, Weather Spotter and Piwoslaw all have great examples to follow.

The Cruze works based on many factors the ECM is controlling. But it is just one full one across the bottom. I don't like the all or none proposition of that, since I have a full upper block already.

Since I still need A/C, and since I have 2 side by side fans, I think if the AC compressor is on, one on each side should be open.

With A/C off, 2 side shutters will be closed, it will just be the center of the bottom grill opening and closing based on temps.

It will be higher than 195 thermostat opening, but less than when the radiator fan wants to kick in.