Quote:
Originally Posted by Daox
I'd have to agree with Frank. If I'm gonna go to all the trouble of making an automated grill block I'd want it closed all the time until it absolutely needs to be open, right up just before the fan turns on.
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If you don't need as much cooling, you could use the speed sensitive device allong with a partial grill block or even a full grill block. Having a self regulating device allows you to push the envelope a bit more. At current state, I have driven in over 100 degree temps without exceeding 190 degrees F which means I could potentally add a partial grill block to the lower grill, even under worst case desert heat conditions and maintain proper temps. I could certainly do so in the cooler half of the year and cut down to 25% open area at highway speed and 75% at low speed since the device allows full air flow at low speeds.
My desire is to set my front end up with the shutter and grill block to allow sufficient cooling under my personal worst case driving conditions and have no need to worry about it again. No electric motors or sensors to fail due to the harsh environments.
Last night I tuned the system in to work as intended; that is, the first shutter closes at around 45 to 50 and the second shuts around 60 to 65 mph. I matched my personal best mpg on the way to work this moring, even without the grill in place at 32 MPG! That is really good considering my recent averages have been around 27 without the device. I don't think I will maintain over 30 for the tank but if I could set a new pr, that would indicate the the shutter is giving me some real results.