spark Posted April 26, 2011 Report Share Posted April 26, 2011 Alrighty my Gas Gas Racing model arrived last week with the PWK 28 carb. The bike runs amazing with this carb on! The bike runs so crisp, not a hint of richness. I cannot feel a loss in bottom end, and the bike picks up revs much quicker with more power as well. The odd pinging I used to get with the Dellorto is not there and I am getting better economy as well.To say I'm pleased would be an understatement. Quote Link to comment Share on other sites More sharing options...
neo Posted April 27, 2011 Report Share Posted April 27, 2011 Dum de dum de dum!!!!!!!!!!! Try solder and a drill! Sorry Cope the penny didn't drop on this one What drill sizes correlate to what jet sizes? Best of balance. Neo Quote Link to comment Share on other sites More sharing options...
neo Posted April 29, 2011 Report Share Posted April 29, 2011 Hey Cope ... any update on this? Best of balance. Neo Quote Link to comment Share on other sites More sharing options...
copemech Posted April 30, 2011 Report Share Posted April 30, 2011 (edited) Hey Cope ... any update on this? Best of balance. Neo Seems they are metric standard, so a 50 would be 0.5mm as I get it. I did a bit of sweep on this today and does seem impossible at the pilot sizes. I have small drills down to .5mm, and plan to take my choke jet out to .70 by this method of drilling, yet a look at the scales suggest at even #80 on the smallest standard drills would be at near a 40 pilot. And not in a good work range for experimentation. Seems to me on the carbs, one needs to go about 5 points in either direction to get the screw in range, then go half that to fine tune and let the screw do the rest. A point here or there makes little difference. Edited April 30, 2011 by copemech Quote Link to comment Share on other sites More sharing options...
copemech Posted April 30, 2011 Report Share Posted April 30, 2011 Alrighty my Gas Gas Racing model arrived last week with the PWK 28 carb. The bike runs amazing with this carb on! The bike runs so crisp, not a hint of richness. I cannot feel a loss in bottom end, and the bike picks up revs much quicker with more power as well. The odd pinging I used to get with the Dellorto is not there and I am getting better economy as well.To say I'm pleased would be an understatement. The PWK is a good carb,and appropriate to the bike. They got some stick for thos that want it! Yet smooth within the range. Last I heard, Caby has gone back to it on the Sherco. ? As well as others. Not sure here,, but ? Wait and see what shows at SSDT! Quote Link to comment Share on other sites More sharing options...
neo Posted April 30, 2011 Report Share Posted April 30, 2011 Seems they are metric standard, so a 50 would be 0.5mm as I get it.I did a bit of sweep on this today and does seem impossible at the pilot sizes. I have small drills down to .5mm, and plan to take my choke jet out to .70 by this method of drilling, yet a look at the scales suggest at even #80 on the smallest standard drills would be at near a 40 pilot. And not in a good work range for experimentation. Seems to me on the carbs, one needs to go about 5 points in either direction to get the screw in range, then go half that to fine tune and let the screw do the rest. A point here or there makes little difference. Hmmm ... lots of confusing information on this on the web so I have just ordered a set of bits (0.3 to 1mm) and will try the good old fashion "trial and error" method ... got nothing to loose really Best of balance. Neo Quote Link to comment Share on other sites More sharing options...
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