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post #1 of 3 (permalink) Old 05-28-2010, 10:05 AM Thread Starter
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Just wondering

I have never seen anyone put a air/fule gauge on a bone stocker,was just wondering if anyone even knows how Kawasaki sets them up. I have the 2010 here and just starting my in house R&D work by welding bungs in both pipes. Didn't know if anyone ever did this. I also want to see what a bone stocker does when you run it down the road wide open. The reason for this is I have a customer that said his 840 takes about 40% more fuel up to 6000 rpms but after that the front jumps up to needing 70% or more the longer he holds it wide open. My thinking is the fuel pump might not be keeping up with the bigger injectors. Just something that makes you go hummmmmmmmm! Could this cause over heating holding them wide open in the dunes?
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post #2 of 3 (permalink) Old 05-28-2010, 01:19 PM
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Never tested it but I'll bet they are set up a bit rich.
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post #3 of 3 (permalink) Old 05-28-2010, 02:39 PM Thread Starter
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Well I started looking things over to day and found this about the plenum. Looking in from the 3 inch air cleaner opening you can see by the red arrows the velocity stack blocking the air from turning into the rear throttle body.You can see the top of the front velocity stack catching the in coming air at a better angle. The blue lines are the undisturbed air entering in to the plenum.

The outside side pic shows the air travle a little better and how this could rob air flow to the rear cylinder.I first put the plenum on the flow bench and I tested each hole by it self first , you could hear the rear air flow messing up big time and the front was real quiet. My flow bench doesn't flow as much as the high dollar one's but even at 15 inches of vacum it still gave a good idea what would be happening with more air flow.

I ran out of time to test the stock air box lid today but I don't think it flows enough for me to run down the road with it over my mouth with out passing out, let along a v-twin 750 motor. And no I don't want to hear that it's because I have a big mouth

I don't think any of this matters on a stock motor but as you start building the insides with big valve heads and bigger throttle bodys it will play into this. I did like the fact that there is alot of rubber matts all over the top of the motor that I didn't see on the 08's keeping less heat away from the air intake area.


I will keep adding to this R&D work as we go on over the next few weeks,


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