Maintenance & Technical > KX500 Original
jetting for 6200-10k above sea level.
bjohn07:
--- Quote from: Foxx4Beaver on January 27, 2013, 03:14:40 AM ---
--- Quote from: bjohn07 on January 27, 2013, 03:01:12 AM ---what should the psi reading be.
--- End quote ---
You already know that answer from one of your previous posts :wink:
--- End quote ---
ok didnt know if those psi specs are meant for cold or operating temp. but ill give it a shot. thanks for the help
Foxx4Beaver:
for warm/operating temp.
81cr450:
main jet is 162, pilot is 58 and the needle clip was on the 2nd from the top
That should be right for hot mid-summer temps, if your below 70* though take it to 165 , 60-62 pilot. I'm betting its been as cold there as it is here & it's probably pretty hard starting. The 62 pilot where its as cold as it is & maybe even 168 , I know that doesnt seem right at elevation but... colder air is the factor.
I ride the elevation you are talking about, You're really trying to hit a happy medium cause your running such a spread of jetting ranges. There's a nice riding spot uphill from me @ about 6500 ft that I can dial in for there & then go up to 10,500 & tell how close I am. You'll be a complete pig up at 10,500 if your too rich at 6500. At 10-11000 all your going to get is the ability to run at the edge of piggyness. It'll clean out & wont leave you fouling , but if you make it run sweet up high you'll be too lean when your lower. From the 6500 ft "good" baseline you'll feel a slight loss at about 9000 but it will still be rideable up to 11,000, thats as high as I go anyway & it's just crossing over a ridgeline for a mile or 3. My opinion is as you go up the air does cool which helps the spread.
It does sound like a compression test is in order though.
bjohn07:
ok i ran the compression test cold. as i said i dont have the carb on so there is no way to start and get to temp. but it hit 110 cold. thats good enough for me. im sure it will come up some if its at temp.
bjohn07:
--- Quote from: 81cr450 on January 27, 2013, 05:04:54 AM ---main jet is 162, pilot is 58 and the needle clip was on the 2nd from the top
That should be right for hot mid-summer temps, if your below 70* though take it to 165 , 60-62 pilot. I'm betting its been as cold there as it is here & it's probably pretty hard starting. The 62 pilot where its as cold as it is & maybe even 168 , I know that doesnt seem right at elevation but... colder air is the factor.
I ride the elevation you are talking about, You're really trying to hit a happy medium cause your running such a spread of jetting ranges. There's a nice riding spot uphill from me @ about 6500 ft that I can dial in for there & then go up to 10,500 & tell how close I am. You'll be a complete pig up at 10,500 if your too rich at 6500. At 10-11000 all your going to get is the ability to run at the edge of piggyness. It'll clean out & wont leave you fouling , but if you make it run sweet up high you'll be too lean when your lower. From the 6500 ft "good" baseline you'll feel a slight loss at about 9000 but it will still be rideable up to 11,000, thats as high as I go anyway & it's just crossing over a ridgeline for a mile or 3. My opinion is as you go up the air does cool which helps the spread.
It does sound like a compression test is in order though.
--- End quote ---
ill try this as my baseline and go from there. so what is your air screw set at.
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