Maintenance & Technical > KX500 Original
Project "I needed to clean the air filter so I blew the motor"
USMC 500:
I can find comfort in the fact that in all the threads I have going on this site people have been able to discuss and share their thoughts and findings with their own machinery. One of things that I love about this site is the drama and ego free discussions. I'm positive that if I had kept a closer eye on my main jet my "Motorrad" built engine would have lasted countless hours of riding. In the last few months I've ridden everything from Japanese to European, 4stroke, 2stroke, 300cc to 650cc.........and in all that riding I can say this.......My KX500 even when I ran it rich made more power than any of those machines anywhere else in the rpm range. I'm no longer going to worry about perfect jetting.....I will jet slightly fat on the top end and ride it forever. :wink:
USMC 500:
--- Quote from: Pmcg on December 14, 2013, 08:59:32 AM ---Oscar what type of riding do you do? How would the window be a negative?
--- End quote ---
I ride everything from desert to single track........I won't be making the final decision on the window. I'll leave that to Motorrad. His theory's are much more solid than my own. Any questions on my engine build should be directed in his direction. If you read a few pages back on this thread there has been discussion on window and windowless design and different styles of window. Either way I'm sure I'll be happy with the final product. :-)
sandblaster:
I've rode my k5's since 2000.
I have played around with jetting chasing numbers for elevation and temp.
Yes, a bad jetted k5 will still pull away from just about any stock bike out there.
But one that is correctly jetted will rip the guts out and stomp all over them. 8-)
In all fairness I couldn't tell a lot of difference on the dirt or sand.
But when I started playing with the street tard jetting became a bit more obvious.
USMC 500:
--- Quote from: sandblaster on December 14, 2013, 09:16:57 AM ---I've rode my k5's since 2000.
I have played around with jetting chasing numbers for elevation and temp.
Yes, a bad jetted k5 will still pull away from just about any stock bike out there.
But one that is correctly jetted will rip the guts out and stomp all over them. 8-)
In all fairness I couldn't tell a lot of difference on the dirt or sand.
But when I started playing with the street tard jetting became a bit more obvious.
--- End quote ---
Difference is this......on dirt you have wheel spin which allows the engine to spool up with less effort......kinda like slipping a clutch...........but with pavement you have no wheel spin which makes the engine work harder to get up to speed......that's why jetting is much more obvious on the road.
sandblaster:
+1
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