KX Riders

Maintenance & Technical => KX500 Original => Topic started by: JBKX on February 14, 2008, 12:45:12 PM

Title: KX500 in '01 KX250 Frame
Post by: JBKX 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!

Title: Re: KX500 in '01 KX250 Frame
Post by: JBKX 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

Title: Re: KX500 in '01 KX250 Frame
Post by: JBKX 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!

Title: Re: KX500 in '01 KX250 Frame
Post by: JBKX 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.

Title: Re: KX500 in '01 KX250 Frame
Post by: gwcrim 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?

Title: Re: KX500 in '01 KX250 Frame
Post by: JBKX 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.

Title: Re: KX500 in '01 KX250 Frame
Post by: don46 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

Title: Re: KX500 in '01 KX250 Frame
Post by: JBKX on February 25, 2008, 02:53:20 PM

It's coming along.  I just finished the head stay tonight.  No pics of it yet.

Title: Re: KX500 in '01 KX250 Frame
Post by: JBKX 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!

Title: Re: KX500 in '01 KX250 Frame
Post by: gwcrim on March 03, 2008, 01:34:57 AM

Did you use the 250 radiators?

Title: Re: KX500 in '01 KX250 Frame
Post by: 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?

Title: Re: KX500 in '01 KX250 Frame
Post by: Jeeks on March 03, 2008, 04:30:21 AM

Looks good.   Has anyone dynoed KX v. CR pipes for gains or losses?

Title: Re: KX500 in '01 KX250 Frame
Post by: Hillclimb#42 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.

Title: Re: KX500 in '01 KX250 Frame
Post by: don46 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. 

Title: Re: KX500 in '01 KX250 Frame
Post by: peppe70rs on March 04, 2008, 09:09:52 PM

(http://i37.photobucket.com/albums/e75/smanett/05032008001.jpg)
(http://i37.photobucket.com/albums/e75/smanett/05032008.jpg)