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Author Topic: KX500 in '01 KX250 Frame  (Read 3718 times)

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Offline JBKX

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KX500 in '01 KX250 Frame
« on: February 14, 2008, 12:45:12 PM »
I just bought a 01 KX250 frame that's been modded already to accept a 500 motor!  It comes with an already fitted CR500 exhaust and all of the other fabbing needed to bolt in the 500.  All I need to do is fab a front head mount or cut of my mount and weld it onto the front on the head.  Does this absolutely need to be done or can I get by without a head stay?  Hopefully I can post some pics in a week or so!
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2) 1986 KXT250 TECATE 3's
1986 KXT500 TECATE
2001 KX500SF

Offline JBKX

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Re: KX500 in '01 KX250 Frame
« Reply #1 on: February 14, 2008, 02:26:36 PM »
Thanks for the pics!  I'll start working on mine this weekend.

By the way, does your spark plug clear the bottom of the tank or did you mold the tank up?

I haven't received the bike yet.  When it comes, I plan on getting everything together and ironed out and then primping it up to my tastes.

PS:  Does anybody have a Boyesen stator cover or know where I can buy a new one?  They seem to be discontinued :x
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2) 1986 KXT250 TECATE 3's
1986 KXT500 TECATE
2001 KX500SF

Offline JBKX

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Re: KX500 in '01 KX250 Frame
« Reply #2 on: February 15, 2008, 12:25:57 AM »
I'm getting it from an ice racer in MN.  I have a spare set of KX500 Radiators, Should I use them?  What to do with the plug?  Thanks for the insight!
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2) 1986 KXT250 TECATE 3's
1986 KXT500 TECATE
2001 KX500SF

Offline JBKX

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Re: KX500 in '01 KX250 Frame
« Reply #3 on: February 23, 2008, 03:02:50 PM »
The engine is installed!  All that is left is the small pieces, hopefully it will be together by midweek.  I can't wait for the weather to get better (3 more inches of snow today) so I can ride.
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2) 1986 KXT250 TECATE 3's
1986 KXT500 TECATE
2001 KX500SF

Offline gwcrim

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Re: KX500 in '01 KX250 Frame
« Reply #4 on: February 25, 2008, 05:20:41 AM »
Are you carrying on a conversation by yourself????   :-D

What are you doing for an exhaust pipe?
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~Crim~
You raise the blade
You make the change
You rearrange me 'til I'm sane

Offline JBKX

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Re: KX500 in '01 KX250 Frame
« Reply #5 on: February 25, 2008, 05:51:38 AM »
CR500 pipe.  It isn't the prettiest but it will do for now.  There were other posts but mine are the only that show up now.  I don't know why.
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2) 1986 KXT250 TECATE 3's
1986 KXT500 TECATE
2001 KX500SF

Offline don46

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Re: KX500 in '01 KX250 Frame
« Reply #6 on: February 25, 2008, 06:14:51 AM »
The CR500 pipe work quite well, or you can get a pipe from service Honda for the new KX500AF, they are priced about the same as a KX500 pipe from Pro Circuit or FMF. WE NEED PICTURES :-D
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Live today, for tomorrow may never come

Offline JBKX

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Re: KX500 in '01 KX250 Frame
« Reply #7 on: February 25, 2008, 02:53:20 PM »
It's coming along.  I just finished the head stay tonight.  No pics of it yet.
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2) 1986 KXT250 TECATE 3's
1986 KXT500 TECATE
2001 KX500SF

Offline JBKX

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Re: KX500 in '01 KX250 Frame
« Reply #8 on: March 01, 2008, 07:26:53 AM »
All done but polishing and waiting on a few new parts!  It runs like a raped ape!
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2) 1986 KXT250 TECATE 3's
1986 KXT500 TECATE
2001 KX500SF

Offline gwcrim

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Re: KX500 in '01 KX250 Frame
« Reply #9 on: March 03, 2008, 01:34:57 AM »
Did you use the 250 radiators?
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~Crim~
You raise the blade
You make the change
You rearrange me 'til I'm sane

Offline JBKX

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Re: KX500 in '01 KX250 Frame
« Reply #10 on: March 03, 2008, 02:55:22 AM »
Yes, the bottoms barely touch the head.  I'm thinking of moving them forward about 1/8".  What have others done?
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2) 1986 KXT250 TECATE 3's
1986 KXT500 TECATE
2001 KX500SF

Offline Jeeks

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Re: KX500 in '01 KX250 Frame
« Reply #11 on: March 03, 2008, 04:30:21 AM »
Looks good.   Has anyone dynoed KX v. CR pipes for gains or losses?
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2000 KX250 x2
1975 Z1-900

Offline Hillclimb#42

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Re: KX500 in '01 KX250 Frame
« Reply #12 on: March 03, 2008, 10:35:08 AM »
Quote from: JBKX on March 03, 2008, 02:55:22 AM
Yes, the bottoms barely touch the head.  I'm thinking of moving them forward about 1/8".  What have others done?

 Wish in one hand and sh#* in the other.... :lol: That is a real cool bike. It is Sick !!!!!!  :evil:
Those radiators will probably be ripped off under the g-forces or wind sheer.
« Last Edit: March 03, 2008, 10:36:48 AM by Hillclimb#42 »
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Offline don46

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Re: KX500 in '01 KX250 Frame
« Reply #13 on: March 04, 2008, 03:33:24 AM »
I used the K5 radiators on all mine, minor fitment problem on the lower radiator shroud, spacer takes care of problem. 
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Live today, for tomorrow may never come

peppe70rs

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Re: KX500 in '01 KX250 Frame
« Reply #14 on: March 04, 2008, 09:09:52 PM »

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