KX Riders
Maintenance & Technical => KX500 Original => Topic started by: lance89 on November 06, 2013, 10:34:56 AM
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Hey guys I'm new to this forum, but I need some help on a engine question. I'm trying to build a custome road racer with a 95 KX500 engine in it. My question is, is there much difference in 1988-1995 engines? and if so can you give me some of the differences? The rules for the class require 1990 and older engines unless the they are same. Lance
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Hello Lance and welcome to the forum.
The 88 uses a 2 exhaust valve set up as well as some other changes.
The 89-04 all use the 3 valve setup and only have minor differences in the magnito and shift shaft.
Everything else in the 89-04 is the same.
Other then the engine I'd numbers tou would be hard pressed to find any visual differences.
Keep us up to date on your progress..
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thank you for the info. That is exactly what I was looking for. I will try and start taking some pictures. I'm concurned with vibration. I am using a steel framed chassie to hopefully help this a little. Thanks again Lance
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A balanced crank should make a big difference in vibration.
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A balanced crank should make a big difference in vibration.
+1
Also, if you want to see the differences in the engine parts as well as the chassis parts check out this chart:
http://www.oem-cycle.com/KAWASAKIKX500BIKEID.shtml (http://www.oem-cycle.com/KAWASAKIKX500BIKEID.shtml)
Be sure to scroll way to the right... :wink:
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thank you for the info. That is exactly what I was looking for. I will try and start taking some pictures. I'm concurned with vibration. I am using a steel framed chassie to hopefully help this a little. Thanks again Lance
there is a member here by the name of PVO that put a Kx500 motor in a street chassis. he was playing with all kinds of balance factors etc due to the fact I believe he had the motor in at a differant angle.
perhapse somone like blaster. who actually bookmarks the entire site for refferance., instead of memorizing it like me. will post a link
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here. got a quick jolt of Un-lazy.
http://www.kxriders.com/forums/index.php/topic,9353.0.html
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A balanced crank should make a big difference in vibration.
+1
Also, if you want to see the differences in the engine parts as well as the chassis parts check out this chart:
http://www.oem-cycle.com/KAWASAKIKX500BIKEID.shtml (http://www.oem-cycle.com/KAWASAKIKX500BIKEID.shtml)
Be sure to scroll way to the right... :wink:
crank balance is a big factor..if it performs like a rodeo-bull, it turns the bike into a big vibrator and thats no good ride. the engine is also faster worn out..
sandblaster has done a good work with his listing, buts is easier to see with pictures, so you can compare all kx500 facts also here in the oem-schematics -- www.cmsnl.com --
and found this on youtube.. :-D http://www.youtube.com/watch?v=Clv_h8zDrz4
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WOW, you guys are awsome. The crank was balance by falicon. Lance
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I just read through some of the build by PVO. That was a seriouse build. You guys will be dissapointed in mine. Its not nearly as in depth as that. I'm just stuffing it in street bike frame. I cant figure out to insert a pic. Lance
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I just read through some of the build by PVO. That was a seriouse build. You guys will be dissapointed in mine. Its not nearly as in depth as that. I'm just stuffing it in street bike frame. I cant figure out to insert a pic. Lance
We love to watch all builds. big or small. I have learned more from some of the small builds around here to be honest.
Keep in mind when you have it balanced. Balance factor is about chassis harmonics.
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explain, balance is about chassie harmonics?? also how do I post a pic? Lance
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explain, balance is about chassie harmonics?? also how do I post a pic? Lance
a good balanced engine idles and runs smooth like a swiss watch . any vibrations of an unbalanced crank would kill bike performance in any way...
to post pictures you need a photohoster like photobucket or anything else that you like more . if you look here into the message icons, you find "insert image". click it, copy the url of the pic in and voila your pic is here..
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You can never fully balance a single CLY motor. you only change the range of vibration, and angle of vibration.
for example. old husqvarnas are balanced in the 78+% range. nice and smooth (smoother than a K5 actually).
try that with the K5. vibration city.
I shouldnt have said its ALL about chassis hermonics. should have said its a factor.
the way the motor is mounted, and the chassis design , as to how it transmits its hermonics through the chassis to the ground. to some degree
there is a good thread around here somewhere about balance factors.
http://www.kxriders.com/forums/index.php/topic,8794.0.html
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my plan right now is to mount it as rigid as possible. Lance