Maintenance & Technical > KX500 Original
Project "I needed to clean the air filter so I blew the motor"
motopunk:
--- Quote from: Motorrad on May 21, 2013, 05:40:35 PM ---my theory on how air will travel. (look at arrows in middle section.. and imagine if there was a big hole cut in the piston... how that would starve the rear boost port (which is at the top of the middle section), and the floor ports... making the air travel MUCH further than it has to to get to the comb chamber)
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and my theory.. bring as much as possible flow to the engine for as much as possible performance, that is needed, but dont cut to much, to be safe that the cylinder dont crack up there... :wink:
Motorrad:
--- Quote from: alward25 on May 21, 2013, 06:16:32 PM ---
--- Quote from: Motorrad on May 21, 2013, 04:30:50 PM ---I guess my theory is... why would one add a piston port right in the middle of a Rear boost port... causing the intake charge to go to the crank case, instead of a direct path to where it needs to go....
I hope people jump in on this discussion. Im not a one man band here.
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Don't know, but it dyno proved 3 hp to have it. How does a posi track rear end work on a Plymouth, it just does );
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I agree there is an improvement in running a window vs not. But I think we can improve on the current design.
to me , the current one is like slapping a U-turn in the transfer ports, making them go back to the crank case before they can then go to the comb chamber again..... kinda bass akwards
sandblaster:
So any pics on what your thinking?
Motorrad:
--- Quote from: sandblaster on May 22, 2013, 02:26:14 AM ---So any pics on what your thinking?
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very crude ones... I cut the holes with a drill press and a dremel.. since we are just playing at this point.. didnt feel like tooling up the mill...
Motorrad:
the windows seem to just Skirt (yes pun intended) the re-inforcing ribs in the piston (wiseco) will have to test the wosssener. so that is a good thing.. that was one thing I was worried about.
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