tahoebrian5 Posted January 3, 2015 Report Share Posted January 3, 2015 I pulled my carb apart today. This is on my new to me 09 280 Eco with the PHBL26. The pilot was a 33, and the main was a 270. Needle was a D36 clip on second groove from bottom, slide is a 60. I was expecting the main to be in the 115 range. The 270 seems way out of spec. Is this correct? I have a hard time imagining someone putting in a jet that far off. The bike was definitely running rich. I never really opened the throttle much and have just been putting around though. Anyway, I'm at 4500' elevation. what do you guys think? Throw in a 115? Quote Link to comment Share on other sites More sharing options...
lineaway Posted January 3, 2015 Report Share Posted January 3, 2015 You need a 38 pilot and a 115. Quote Link to comment Share on other sites More sharing options...
tahoebrian5 Posted January 3, 2015 Author Report Share Posted January 3, 2015 Ok thanks, just wanted a sanity check. Unbelievable! Do you have a recommended needle clip position to go with your recommended jet setup? Quote Link to comment Share on other sites More sharing options...
tahoebrian5 Posted January 3, 2015 Author Report Share Posted January 3, 2015 Ok, dumb mistake. Apparently there are two jets that go around the needle. I was looking at the wrong one. The one in the bowl plug is 118. I'm going to try just dropping the needle for now. Quote Link to comment Share on other sites More sharing options...
lineaway Posted January 3, 2015 Report Share Posted January 3, 2015 You still need the bigger pilot. Quote Link to comment Share on other sites More sharing options...
tahoebrian5 Posted January 4, 2015 Author Report Share Posted January 4, 2015 Im going to order a few to try. It seems to me that the just above idle is running rich to me though. Plug shows rich also and i spend all my time below 1/4 throttle. Are you above sea level a ways with your jetting? Quote Link to comment Share on other sites More sharing options...
copemech Posted January 4, 2015 Report Share Posted January 4, 2015 Do what he said, run the needle somewhere in the middle, try second groove down first. Run the fuel trim screw as lean as possible for smooth running, but a caution as they do become sensitive to 1/8 turn or so and change with altitude and temps on the day. The transition(to needle) circuit of this carb at 1/8 throttle or so is a weak point so do not expect perfection. Quote Link to comment Share on other sites More sharing options...
lineaway Posted January 4, 2015 Report Share Posted January 4, 2015 We run at 5500ft. At sea level they run a 36. You need a 38 and maybe the 115. 1 Quote Link to comment Share on other sites More sharing options...
tahoebrian5 Posted January 4, 2015 Author Report Share Posted January 4, 2015 Wouldn't it be a bigger jet for lower elevation? Never heard of going smaller at sea level Quote Link to comment Share on other sites More sharing options...
lineaway Posted January 4, 2015 Report Share Posted January 4, 2015 Smaller for the main, bigger for pilot. Actually has to do with atmospheric pressure. Take a trip to Colorado or New Mexico and ask what people run. Or if you ever make it to a National Look up Dale M. the Gas Gas Importer and he will give the same info. Quote Link to comment Share on other sites More sharing options...
10k Posted January 4, 2015 Report Share Posted January 4, 2015 Wouldn't it be a bigger jet for lower elevation? Never heard of going smaller at sea level Smaller for the main, bigger for pilot. Actually has to do with atmospheric pressure. Take a trip to Colorado or New Mexico and ask what people run. Or if you ever make it to a National Look up Dale M. the Gas Gas Importer and he will give the same info. You can take this advice to the bank! He knows what he speaks. Quote Link to comment Share on other sites More sharing options...
tahoebrian5 Posted January 4, 2015 Author Report Share Posted January 4, 2015 Ok, I sent off an order request to lewisport for a 38 and 115. Thanks a bunch Quote Link to comment Share on other sites More sharing options...
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