Maintenance & Technical > KX500 Original
premix ratio
cbxracer30:
70 to 1 in my drag bikes for the last 8 years ,the bikes my boys race get alot more than just track time on them , I used to run AFT powerlube but now we are running Motorex 2T Power . My buddy just got a new 300 KTM and he said it calls for motorex mixed 60 to 1 , but he run Amsoil Dominator 50 to 1 . CBX
Big Yac:
when I first started riding I ran Suzuki CCi in my YZ 125, that oil was junk. I then switched to MC-1 at 50:1 and the 125 ran great. When I got my KDX 200 I kept running MC-1 @ 50:1, it too ran great. When I got my 500 new in 99 I ran a tank of MC-1 and it fouled plugs like crazy. I switched to Maxima SuperM and adjusted jetting (I'm sure this is what cured the fouling), still running at 50:1 and the bike has ran great since. Top ends look fine and you can still see the cross hatch in the bore, not alot of carbon build up either. 50:1 is fine.
andydunne:
50:1 jeez I thought that would be way too lean.
I presume its only ok to run 50:1 plus with a top quality oil?
Motorrad:
--- Quote from: andydunne on January 10, 2012, 10:30:29 AM ---50:1 jeez I thought that would be way too lean.
I presume its only ok to run 50:1 plus with a top quality oil?
--- End quote ---
technically... rich..
The Flyin Hawaiian:
I used to run 50:1 in my old 88 500 with no issues. I run 40:1 in my 02 500 mainly because my wife runs 40:1 in her KX250 and we share the same cans at the races. Just easier for us. Runs fine on that also.
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