Maintenance & Technical > KX500 Original
Jetting!!! Again and again and again!
gowen:
--- Quote from: kawdude ---Nice bike and nice truck!!
I was reading in "another" forum regarding big bore packages that Gore does in general need to be leaned out. This surprised the heck out of me. Any thoughts?
--- End quote ---
Thanks..
Well, coming from Rich, I'd assume he knows most his stuff. I'd run off his oppinion before most anybodys. But, like you said, does that imply with the kx500. I'm assuming so.
Hey, how's the luck on the jetting for your bike?
mikesmith:
Did you ever contact Gorr since he had just done your engine?
kawdude:
Rich's response was this...
Scavenging tends to be improved with the big-bore kit and porting. With improved scavenging comes less residual burned exhaust gas in the chamber and a need for less fuel to use all the available oxygen. WHERE in the range that will occur is very much bike specific , but again generally speaking (can you tell I HATE making generalizations? :) ) the fuel curve tends to need to be a bit leaner across the board.
I'm afraid there is no general prescription answer to a question like this.
--- Quote from: gowen ---
--- Quote from: kawdude ---Nice bike and nice truck!!
I was reading in "another" forum regarding big bore packages that Gore does in general need to be leaned out. This surprised the heck out of me. Any thoughts?
--- End quote ---
Thanks..
Well, coming from Rich, I'd assume he knows most his stuff. I'd run off his oppinion before most anybodys. But, like you said, does that imply with the kx500. I'm assuming so.
Hey, how's the luck on the jetting for your bike?
--- End quote ---
gowen:
I'm assuming that makes sense. Utilizing the oxyigen there for not needing quite as much fuel. Well, ups has them on the brown for delivery today! So, I'm gonna give that stator a try and pray :roll: it works, if so, jetting is gonna be the next object. Which I'd be more than happy to keep you posted on that.
How is the jetting going on your side? as in, still popping and surging?
--- Quote from: kawdude ---Rich's response was this...
Scavenging tends to be improved with the big-bore kit and porting. With improved scavenging comes less residual burned exhaust gas in the chamber and a need for less fuel to use all the available oxygen. WHERE in the range that will occur is very much bike specific , but again generally speaking (can you tell I HATE making generalizations? :) ) the fuel curve tends to need to be a bit leaner across the board.
I'm afraid there is no general prescription answer to a question like this.
--- Quote from: gowen ---
--- Quote from: kawdude ---Nice bike and nice truck!!
I was reading in "another" forum regarding big bore packages that Gore does in general need to be leaned out. This surprised the heck out of me. Any thoughts?
--- End quote ---
Thanks..
Well, coming from Rich, I'd assume he knows most his stuff. I'd run off his oppinion before most anybodys. But, like you said, does that imply with the kx500. I'm assuming so.
Hey, how's the luck on the jetting for your bike?
--- End quote ---
--- End quote ---
kawdude:
Leaning out the pilot to a 55 seemed to get rid of the popping and surging after I let off the gas but still have the problem with the bike running rough in the mid and upper range. Not go past mid. My next test will entail placing the needle clip in the upper slot and then the lower slot in an attempt to change the response. I also need to make sure the power valve is working right.
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