02-18-2008, 04:10 AM #1
Installing knock sensor for tuning
To try and get the best out of tuning my ski shortly, I'm installing a knock sensor as a safety precaution to watch for detonation (as well as a warning for bad fuel down the track).
I chose the TurboXS 'knock lite' because its the only one I know of that is smart enough and can determin the difference between engine noise and detonation. (see link for explination)
I've started by using silicon on it to waterproof it as much as possible.
Mounting will be under the hood as per pictures bellow.
The knock sensor it self, I'm using a Ford item (but a single wire Subaru knock sensor would be better as there is no Earth wire). I've drilled the center hole out from 8mm to 10mm to suit the bolt from the Exhaust bracket on the side of Cylinder #2. an 18mm longer bolt.
see pictures bellow.
02-18-2008, 04:16 AM #2
02-18-2008, 05:07 AM #3
- Join Date
- Oct 2006
hmmmm, nice mod damo but does it work accuratley
02-18-2008, 05:34 AM #4
02-18-2008, 05:40 AM #5
- Join Date
- Oct 2006
i look forward to seeing yourself results, i think some of the seadoo folk do similar things for detecting knock...
02-18-2008, 11:26 AM #6
02-18-2008, 12:11 PM #7
Smart move...detonation is the #1 killer of these 2-strokes imho
To bad there isn't a way for a set up to be able to pull timing when knock is detected.
A warning light is good, much better than what I have now (NOTHING).
You will have to be on your toes and cut throttle asap when the little light flashes. Doesn't take much deto to do damage, a little deto here and there does have its accumulative effects in the long run of engine longevity.
Interested to know how it works out for you, please keep us posted.
02-18-2008, 01:03 PM #8
Same thing with fuel tuning at WOT..if your lean I would hope this little wonder could light up to let you know about lean condition. I tried to get this done a few years ago with another deto detector for cars..the creator of the unit said it would'nt work properly on a 2 stroke.
I applaud Allsport to test the waters..this is brilliant imo.
02-18-2008, 04:17 PM #9
My main motivation for doing this, is not so much for while I'm tuning, but to be able to tell if I pick up a bad batch of fuel that might not be as good as the fuel I set the ski up with (I can't always buy fuel from the same gas station).
This will pick up detonation long before you hear it with your ear.
This would be a good unit for those running with after market ignition systems, to be able to test different ignition maps with different fuels and swap in between them.
02-18-2008, 05:30 PM #10
I love this idea. Hopefully it ends up working.
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