Maintenance & Technical > KX500 Original
Jetting!!! Again and again and again!
umberto:
--- Quote from: Foxx4Beaver on November 18, 2015, 08:37:51 AM ---I'd snatch up a "P"...
don't buy the pilots or main jets from Rocky...they are NOT genuine Keihin, even though they're listed in the OEM Kawie parts fiche/diagram...they're cheap bootlegs.
Buy the mains and pilots from here....
http://pjmotorsports.com/
they sell Genuine Keihin jets.
you can buy the needle from Rocky, it'll be genuine.
--- End quote ---
I'll do that. Thank you Foxx!
umberto:
--- Quote from: dave916 on November 18, 2015, 08:41:13 AM ---
--- Quote from: umberto on November 18, 2015, 08:30:53 AM ---I am going to do a leak down test this evening to see if that is the problem or not. I'll let you guys know what I find. I won't lie, I'm pretty nervous about doing it. The last thing I want to do is tear this motor back down again.
Rocky Mountain has the N82 in K, L, M, N, and P. Any thoughts on which one I should get? The N and the P are in stock, the other ones they will have to order. Should I also update the pilot jet? The stock one is listed as a 55 (I have a 50 now), but they have 58, 60, 62, and 65 in stock.
I really appreciate all the help. I'd be lost without you guys.
--- End quote ---
Dont go turning the motor with the inlet blocked {doing the leakdown test} or u could created a leak
Sounds like you a rich on the needle though/
--- End quote ---
I was going to put the piston at BDC and then plug up the motor at the intake and exhaust with expanding automotive plugs. My leakdown tester is from Harbor Freight, and works at 15 psi through the spark plug. Am I doing it correctly?
Foxx4Beaver:
--- Quote from: dave916 on November 18, 2015, 08:32:52 AM ---As it was the wrong needle fitted i did not see any harm on trying it {though it would be like 1369n on 3rd clip ] , try every clip position if he has time :-D.
Since he got that motor on ebay, the motor might never have ran with that carb[jetting}
probably better off trying a good working kx500 carb even thought the jetting on the 88 could vary a little due to bigger case volume
--- End quote ---
that's all fine and dandy if you're gonna take full responsibility if something bad should happen....as we all know, these motors run extremely hot when they're jetted correctly...start leaning things out too aggressively at one time, the temps rocket up in seconds....
safer to stick with small steps at a time.
alexander-vmann:
i got a qestion abot reeds or rather the reed block, i took of the reed to install my new boyesen power reeds and inside the reed cage there was a white plastic instert that pops out, on my 93 parts engine there is no such plastic insert, and i cant find it in the oem parts list, what is this insert and what does it do?
dave916:
--- Quote from: Foxx4Beaver on November 18, 2015, 09:02:54 AM ---
--- Quote from: dave916 on November 18, 2015, 08:32:52 AM ---As it was the wrong needle fitted i did not see any harm on trying it {though it would be like 1369n on 3rd clip ] , try every clip position if he has time :-D.
Since he got that motor on ebay, the motor might never have ran with that carb[jetting}
probably better off trying a good working kx500 carb even thought the jetting on the 88 could vary a little due to bigger case volume
--- End quote ---
that's all fine and dandy if you're gonna take full responsibility if something bad should happen....as we all know, these motors run extremely hot when they're jetted correctly...start leaning things out too aggressively at one time, the temps rocket up in seconds....
safer to stick with small steps at a time.
--- End quote ---
I Was thinking a run up and down the yard {road} not a mxrace :-) it was only goin to be a quick guide
Was thinking umberto had the since to not drive it to far if was lean or not running right
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