I took a spare power valve (the part that threads into the bottom of the bowl) gutted it and soldered it shut. I found that it leaned it out all over the place, not just where I thought it should. Mine runs pretty well right now, I put a ton of miles on it, but I've experimented a bit with modifying the emulsion tubes. I may take a little bit off of the length of the power valve spring which should cause it to engage later, or possibly file down the top of the pin on the thread in valve.
I have opened up exhaust and valves with undercut stems, so I believe I flow a bit better than stock. I was never able to get enough air into it at idle. Drilling a 1mm hole in the primary barrel throttle plate, opposite of the transition ports, made a world of difference for me. I also removed the idle air correction bushing and drilled and tapped it to accept the main fuel jets, so that I have better control over the idle circuit. I think the 2.6 is just a wee bit too big for the stock idle circuit.
Now that you have a wideband, you will have many sleepless nights
Originally Posted by Giovanni89
I took a spare power valve (the part that threads into the bottom of the bowl) gutted it and soldered it shut. I found that it leaned it out all over the place, not just where I thought it should. Mine runs pretty well right now, I put a ton of miles on it, but I've experimented a bit with modifying the emulsion tubes. I may take a little bit off of the length of the power valve spring which should cause it to engage later, or possibly file down the top of the pin on the thread in valve.
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