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Author Topic: KX500 AF Running like a 200  (Read 27312 times)

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Offline RKPerformance

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Re: KX500 AF Running like a 200
« Reply #30 on: May 02, 2013, 06:17:05 AM »
Just ordered a new SH kawasaki 500 pipe & silencer :-D    :mrgreen:
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Offline motopunk

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Re: KX500 AF Running like a 200
« Reply #31 on: May 02, 2013, 07:24:45 AM »
Quote from: RKPerformance on May 02, 2013, 06:17:05 AM
Just ordered a new SH kawasaki 500 pipe & silencer :-D    :mrgreen:

perfekt... than you only have to jet it right and the beast is back to live...  :evil: :-D

...  http://www.oem-cycle.com/KX500JETTINGGUIDE.shtml  ...

and thanks to sandblaster for this great jetting guide on his website...  :wink:
« Last Edit: May 02, 2013, 07:27:51 AM by motopunk »
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big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

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Offline martyestes

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Re: KX500 AF Running like a 200
« Reply #32 on: May 02, 2013, 08:10:24 AM »
If it's burbly, "smokes pretty good" and has no power, you may well have bad crank seals. 
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Offline motopunk

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Re: KX500 AF Running like a 200
« Reply #33 on: May 02, 2013, 08:26:09 AM »
Quote from: martyestes on May 02, 2013, 08:10:24 AM
If it's burbly, "smokes pretty good" and has no power, you may well have bad crank seals. 

checking the crank seals is always a good idea , but I still believe that it is mainly to blame for the  too small pipe.  :wink:
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big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

---  www.der-motopunk.de.tl  ---

Offline RKPerformance

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Re: KX500 AF Running like a 200
« Reply #34 on: May 06, 2013, 05:56:12 AM »
just got a call from SH and the pipe and silencer is not going to be available for a few weeks now.  WTFFFFF
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Offline motopunk

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Re: KX500 AF Running like a 200
« Reply #35 on: May 06, 2013, 10:06:13 AM »
Quote from: RKPerformance on May 06, 2013, 05:56:12 AM
just got a call from SH and the pipe and silencer is not going to be available for a few weeks now.  WTFFFFF


thats bad.. :-(  but you can also use a modified cr 500 pipe and muffler to the k5- engine . my bike runs great with this combination... i took a used stock pipe and a new pro circuit 304 muffler.


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big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

---  www.der-motopunk.de.tl  ---

Offline USMC 500

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Re: KX500 AF Running like a 200
« Reply #36 on: May 06, 2013, 10:12:58 AM »
Quote from: motopunk on May 06, 2013, 10:06:13 AM
Quote from: RKPerformance on May 06, 2013, 05:56:12 AM
just got a call from SH and the pipe and silencer is not going to be available for a few weeks now.  WTFFFFF


thats bad.. :-(  but you can also use a modified cr 500 pipe and muffler to the k5- engine . my bike runs great with this combination... i took a used stock pipe and a new pro circuit 304 muffler.




Thats pretty much what a Service Honda pipe for a KX500 is........they take CR500 pipes and weld on KX500 flanges on them.
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Offline RKPerformance

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Re: KX500 AF Running like a 200
« Reply #37 on: May 07, 2013, 07:15:45 AM »
do you just cut the front of the kx500 pipe off and weld it on to the cr pipe and call it a day?  Will the cr500 silencer mount up without a bunch of pounding and mount changes??
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Offline USMC 500

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Re: KX500 AF Running like a 200
« Reply #38 on: May 07, 2013, 10:40:47 AM »
Thats it.....cut off the front of a K5 pipe, weld it to a C5 pipe and mount it..send to chrome if you are worried about asthetics......not sure on the silencer though.
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I once heard my buddy Bill ask Danny Hamel after a race....
"How can someone who looks like a high school band tuba player go so d**n fast on a bike?!"

Offline motopunk

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Re: KX500 AF Running like a 200
« Reply #39 on: May 07, 2013, 08:15:52 PM »
Quote from: USMC 500 on May 06, 2013, 10:12:58 AM
Quote from: motopunk on May 06, 2013, 10:06:13 AM
Quote from: RKPerformance on May 06, 2013, 05:56:12 AM
just got a call from SH and the pipe and silencer is not going to be available for a few weeks now.  WTFFFFF


thats bad.. :-(  but you can also use a modified cr 500 pipe and muffler to the k5- engine . my bike runs great with this combination... i took a used stock pipe and a new pro circuit 304 muffler.




Thats pretty much what a Service Honda pipe for a KX500 is........they take CR500 pipes and weld on KX500 flanges on them.

thats exactly what i´ve also done...  :-)
i cut off the flange off an old damaged 250 pipe, milled it to the right inner size. than cut the pipe for little change in layout, cause i dont wanted to make a big dent for the coolant elbow. less dents means more expansion chamber = more power  :-D

 but i decided first to try it with an cheap old stock cr500 pipe, before buying an expensive new one ...   :-D power delivery is better that i thought before  :-D
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big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

---  www.der-motopunk.de.tl  ---

Offline RKPerformance

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Re: KX500 AF Running like a 200
« Reply #40 on: May 08, 2013, 07:22:59 AM »
does a stock cr500 silencer mount up?
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Offline motopunk

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Re: KX500 AF Running like a 200
« Reply #41 on: May 08, 2013, 09:21:26 AM »
Quote from: RKPerformance on May 08, 2013, 07:22:59 AM
does a stock cr500 silencer mount up?

I think so. any kind of 89-2001 cr500 u can use ... on my '93-frahme it was easy to assemble the cr500 muffler without any major problems. I had to modify only the connection to the pipe.

here you see before and after modifying...

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big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

---  www.der-motopunk.de.tl  ---

Offline RKPerformance

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Re: KX500 AF Running like a 200
« Reply #42 on: May 17, 2013, 06:08:31 AM »
Whelp, I picked up a cr500 piper and whacked the mouth off of it and started to see how this bad boy was going to fit in the ol kx250 steelie.  I dont know how its going to happen without some major pipe bending/denting etc.  Im wondering if the PO didnt put this motor in there in a different way and that is why he had a yz250 pipe and kx250 silencer on it.  A 500 pipe and silencer dont appear to be useable????  Unless someone knows how to make a super custom pipe work??????
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Offline sandblaster

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Re: KX500 AF Running like a 200
« Reply #43 on: May 17, 2013, 07:17:07 AM »
So, your using a CR500 pipe for the part that comes out of the head and your using a KX500 pipe for the expansion part?
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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline motopunk

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Re: KX500 AF Running like a 200
« Reply #44 on: May 17, 2013, 08:45:26 AM »
Quote from: RKPerformance on May 17, 2013, 06:08:31 AM
Whelp, I picked up a cr500 piper and whacked the mouth off of it and started to see how this bad boy was going to fit in the ol kx250 steelie.  I dont know how its going to happen without some major pipe bending/denting etc.  Im wondering if the PO didnt put this motor in there in a different way and that is why he had a yz250 pipe and kx250 silencer on it.  A 500 pipe and silencer dont appear to be useable????  Unless someone knows how to make a super custom pipe work??????

if you able to read, look a former post of me here in the thread  :wink:,
 its simple to install a cr500 exhaust to the kx500 . or sea it on my website, but watch out, the cuts in the pipe, that i made, are only because i wouldnt make a dent to the inside of the pipe for the water elbow. the stock-honda-pipe has thicker walls, as aftermarket-pipes, so is denting on it a hard work.
 you can also try to turn the elbow upside down and using the water-hose like on the service-kawasaki´s . then you need no denting the pipe and only making the right fitting to the cylinder...  8-) you can mashine an adapter that sticks in honda -pipe and kx-cylinder or you weld on the right flange  ...
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big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

---  www.der-motopunk.de.tl  ---
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