Controller off EGT 0-5 volts

sleeper7 · 02-23-2007

Instead of using the maps 0-5 volts, would it be benifical to use a 0-5 volt converter hooked to a egt probe? currently running two M5 jets, on at 2psi and full at 25psi. Rotary running 25psi. During the last MNM, the weather was very cold and today the weather was 80deg. I would think the motor could use more water on hot day the it would on cold nights. Or am I way off base?
thanks.

Rocket468 · 02-23-2007

yes, this can be done if the converter does not use micro voltage. Some do some don't. Can you link me the converter you are using.

sleeper7 · 02-23-2007

eBay Motors: EGT EMS K-Type Thermocouple 5V adapter FREE SHIPPING!!! (item 220082591234 end time Feb-24-07 12:54:43 PST)

thanks
chuck

dvldoc · 02-23-2007

That's actually pretty slick for the price, We might have to look into something like that.

Here is the scale they are using. Our controller in voltage mode which is in the same set up as a 3 bar operates from 1.8v to 5 volts so it would read 350 degrees to 1000 degrees using that temp probe.

So as long as there scale is accurate the controller would operate over these ranges.

sleeper7 · 02-23-2007

I'll some calculating and give it a try. The only thing I'm worried about is the EGT will operate the water injection between shifts. I'll use a micro switch on the t-body that must be closed before the water injection comes on.

thanks
chuck

02-23-2007	#1 (permalink)
sleeper7 Water Injection Newb Year: 87 Make: mazda Model: RX7 Join Date: Dec 2006 Posts: 8	Controller off EGT 0-5 volts Instead of using the maps 0-5 volts, would it be benifical to use a 0-5 volt converter hooked to a egt probe? currently running two M5 jets, on at 2psi and full at 25psi. Rotary running 25psi. During the last MNM, the weather was very cold and today the weather was 80deg. I would think the motor could use more water on hot day the it would on cold nights. Or am I way off base? thanks.

02-23-2007	#2 (permalink)
Rocket468 DevilsOwn Staff Year: 2000 Make: Pontiac Model: Grand Prix Join Date: Apr 2005 Posts: 1,107	Re: Controller off EGT 0-5 volts yes, this can be done if the converter does not use micro voltage. Some do some don't. Can you link me the converter you are using.

02-23-2007	#3 (permalink)
sleeper7 Water Injection Newb Year: 87 Make: mazda Model: RX7 Join Date: Dec 2006 Posts: 8	Re: Controller off EGT 0-5 volts eBay Motors: EGT EMS K-Type Thermocouple 5V adapter FREE SHIPPING!!! (item 220082591234 end time Feb-24-07 12:54:43 PST) thanks chuck

02-23-2007	#4 (permalink)
dvldoc DevilsOwn Staff Join Date: Apr 2005 Posts: 1,973	Re: Controller off EGT 0-5 volts That's actually pretty slick for the price, We might have to look into something like that. Here is the scale they are using. Our controller in voltage mode which is in the same set up as a 3 bar operates from 1.8v to 5 volts so it would read 350 degrees to 1000 degrees using that temp probe. So as long as there scale is accurate the controller would operate over these ranges.

02-23-2007	#5 (permalink)
sleeper7 Water Injection Newb Year: 87 Make: mazda Model: RX7 Join Date: Dec 2006 Posts: 8	Re: Controller off EGT 0-5 volts I'll some calculating and give it a try. The only thing I'm worried about is the EGT will operate the water injection between shifts. I'll use a micro switch on the t-body that must be closed before the water injection comes on. thanks chuck Last edited by sleeper7; 02-23-2007 at 11:12 PM.