I'm installing a low water switch in the reservoir to shut off the pump via a relay. It will also interrupt the air temp sensor to the Link to cutout the boost when out of water.
FWIW, Mark _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Keith Tanner Sent: Tuesday, April 29, 2008 3:00 PM To: Miata Power List Subject: RE: More water inj stuff I would say that clogged nozzles or dry tanks are probably the biggest risk. Keith Tanner Flyin' Miata [EMAIL PROTECTED] http://www.flyinmiata.com <http://www.flyinmiata.com/> 1-800-FLY-MX5s (orders) 1-970-464-5600 (tech) 2008 FM Open House: August 14-17 _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert McElwee Sent: Tuesday, April 29, 2008 12:58 PM To: Bill Cardell Cc: MiataPower List Subject: Re: More water inj stuff In my experience (not based on WI systems) pumps are less apt to fail than flow meters. Of course, if the flow meter fails low then you will only lose timing. It would be interesting to see what the actual failure rate of a water pump is. I'm sure there would be many variables (my pump won't get used a 1/3 the time that yours will) but the horror stories and pictures would at least be interesting. On Tue, Apr 29, 2008 at 2:51 PM, Bill Cardell <[EMAIL PROTECTED]> wrote: FWIW, Snow sells a 7 gallon water tank to use with the diesel pick-ups. Running on the track at Thunderhill I didn't go through 3 qts in 20 minute sessions. I will probably try experimenting with the massive amounts of water at some point, though. The water injection has always scared me in the past because of the possibility of disaster if you tuned to it and then had a failure, but the newer kits with flow sensors give you a good safety margin. You could either hook the flow meter signal to your boost solenoid so it returns you to base/can boost with a failure or use it to trigger aux fuel and timing maps as we do in the Hydra. Amazing what an extra 8 degrees of timing does. Bill Cardell -- Robert McElwee and Red Beast 1991 T25 Turbo @ 15 PSI Link ECU, FM IC, 9:1 pistons Over 400 lbs of "added lightness" www.lightweightmiata.com Lightweight Miata Forum: www.lightweightmiata.com/forum The Miata Trailer Project: www.lightweightmiata.com/trailer
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