KX Riders

Maintenance & Technical => KX500 Original => Topic started by: pepper on March 30, 2007, 04:40:52 PM

Title: Which yr kx250 vforce3 ?
Post by: pepper on March 30, 2007, 04:40:52 PM

I am planning on adapting the kx250 vfroce3 reeds to my 500.
 
Anyone know which year to use and what is involved?
 
thanks

Title: Re: Which yr kx250 vforce3 ?
Post by: kx666 on March 31, 2007, 02:47:29 AM

they bolt right on

Title: Re: Which yr kx250 vforce3 ?
Post by: pepper on March 31, 2007, 02:48:34 PM

I understood there was some trimming to do.

Title: Re: Which yr kx250 vforce3 ?
Post by: Sandman on March 31, 2007, 04:35:42 PM

I'm going to keep an eye on this thread.... I'm interested in doing the same.  Please let me know if you get it to work.

Thanks!  :)

Title: Re: Which yr kx250 vforce3 ?
Post by: pepper on March 31, 2007, 06:20:51 PM

Sounds good, I know there is at least one person here who has done it, hopefully they chime in.

Title: Re: Which yr kx250 vforce3 ?
Post by: BigGreenMachine on April 01, 2007, 06:22:20 AM

Have to trim the reed stuffers off the KX5 carb boot and thats it I do believe. No extra gasket needed as far as I can tell.

Title: Re: Which yr kx250 vforce3 ?
Post by: don46 on April 02, 2007, 04:02:53 AM

You need to use a V force for an older KX 250 05-07 use a different bolt configuration, I can't remember whether the 03-04 are the old bolt pattern. 02 will defineately work, I've used a 250 valve on my 500.

Title: Re: Which yr kx250 vforce3 ?
Post by: pepper on April 02, 2007, 07:43:51 AM

Just the info we were looking for, thanks don.
 
The Vforce3 is listed for the kx250 in the years 89-04 and 05-07, so now we know which to use.

Title: Re: Which yr kx250 vforce3 ?
Post by: Sandman on April 02, 2007, 12:59:17 PM

Awesome info....thanks guys!  :)

Title: Re: Which yr kx250 vforce3 ?
Post by: Good on April 21, 2007, 02:32:29 PM

Sorry for digging up an old thread, but I'm new, so there's my excuse! :-P

This 89-04 KX250 Vforce 3 will make the most power out of all reeds etc for the KX5?  It beats out the Boysen's and all others?

I would like to see a detailed picture scenario of how to mod it properly for our application, while using the Moose spacer.  That would be nice.

Title: Re: Which yr kx250 vforce3 ?
Post by: MadKaw on April 21, 2007, 04:56:26 PM

don't have any pics, but just did it on my K5.  the v-force was out of my old '01 kx250 and I believe that most of the year models work out about the same, except for the '05 and up. when you unbolt the boot from the reeds and cylinder you will find on the inside of the big rubber boot:

2 rubber protruding wedge shapped pieces that rest inside the stock reeds.
all you have to do is to cut these off with a razor blade down level with the gasket surface. the v-force doesn't have the open cavity that the stock reeds do. so these protruding bits won't go. you'll see it immediately if you have them in your hands. the spacer won't have any effect on this procedure.

Oh, and I used a thin film of the red high temp. silicon on all the mating surfaces to insure no vacuum leaks.

its really an easy deal.....have fun...MK

Title: Re: Which yr kx250 vforce3 ?
Post by: Friar-Tuck on April 21, 2007, 05:13:41 PM

G,
http://www.mototassinari.com/PDF/MotoInstruct04.pdf
  This is from their site. The instructions are for the 250 but I think you'll see what MK was talking about.
 Tuck \o/

Title: Re: Which yr kx250 vforce3 ?
Post by: Good on April 22, 2007, 12:27:31 PM

Thanx for the intelligent replies guys.  I get it! :-D  I'll be picking up some soon.

Title: Re: Which yr kx250 vforce3 ?
Post by: kaw rider on May 27, 2007, 12:48:03 PM

are the 250 reeds thicker then the 500 reeds.

Title: Re: Which yr kx250 vforce3 ?
Post by: MadKaw on May 27, 2007, 03:27:12 PM

no, but the air boot for the 500 has a bigger air cavity

Title: Re: Which yr kx250 vforce3 ?
Post by: Rotorised on May 28, 2007, 11:54:38 PM

Does anyone know what is the best between the kx250 v-force 3 and the kx500 v-force 2?

Title: Re: Which yr kx250 vforce3 ?
Post by: chrisorbics on June 16, 2007, 04:05:02 PM

Hi that is what I am wondering. Why wouldn't you just use the one that are made for it. What is the advantage. I am only interested in low and mid range power because I only ride in the woods. I was also wondering if this whole discusion applies to my bike which is a 1986 kx500 works replica.

Thanks,
Chris

Title: Re: Which yr kx250 vforce3 ?
Post by: doordie on June 16, 2007, 09:07:01 PM

Quote from: Rotorised on May 28, 2007, 11:54:38 PM

Does anyone know what is the best between the kx250 v-force 3 and the kx500 v-force 2?

No screws at all,only "snaps" and easier to file/trim for best flow. :wink:

Title: Re: Which yr kx250 vforce3 ?
Post by: chrisorbics on June 17, 2007, 04:13:16 PM

Hi you guys are getting into it far more than I ever will. I can not see myself trimming my reeds especially if I spent the money on a v-force set up.

Chris