Maintenance & Technical > KX500 Original

Glamis- KX5 vs the four stroke questions

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delusionised:

--- Quote from: Arigato ---First of all, why would you run 28:1?  According to my engine builder and several articles I've read,  40:1 will net you the most power while still giving excellent lubricicity provided you're running good oil. 14-49 or 14-50 gearing will compliment your weight loss well.
--- End quote ---


what main do you run at 40:1 in the Dunes?

Arigato:
I run a 195, but I have a ported cylinder and a bored carb.  Refer to the jetting section on this site and go up one or two sizes for the sand.  Be sure to check your plug though.  Running leaded race gas or a 50/50 mixture will be more forgiving if you err on the lean side.

4-strokes aint got nothin' for this.

delusionised:
4-strokes aint got nothin' for this.[/quote]


 sweet bike, betcha that thing is a lethal wepon at the dunes, so i read a post here once about running 50:1 with a 172 main- thats 2 sizes fatter than stock- think my motor will sieze at this ration on that main? Thanks for your info.

hoopty:
I've run 80:1 Amsoil Pro in LL100 with a 175 main for the past two seasons on the same topend. Get a quality synthetic oil and you'll be fine. Amsoil actually recommends 100:1  :shock:

delusionised:

--- Quote from: hoopty ---I've run 80:1 Amsoil Pro in LL100 with a 175 main for the past two seasons on the same topend. Get a quality synthetic oil and you'll be fine. Amsoil actually recommends 100:1  :shock:
--- End quote ---



wtf? 100:1 thats some crazyness must be some good oil, do you beat the 450's with your set up?

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