KX Riders

Maintenance & Technical => KX500 Aluminum Frame Conversion (AFC) => Topic started by: jholt on December 20, 2010, 03:59:03 AM

Title: What The Best Intake Boot to use
Post by: jholt on December 20, 2010, 03:59:03 AM: What the best intake boot to use from air box to Carb For the 500af Conversion CR or KX and what years

Please advise

Thanks
Title: Re: What The Best Intake Boot to use
Post by: royceymon@hotmail.co.uk on December 20, 2010, 07:54:46 AM: almost same question :
using a 2008 kxf250 rolling chassis and airbox fitting a 2003 kx250 motor , any ideas what boot to use , im due the frame rails from jerry soon when welded in the next quest is the correct boot to use , would realy like some help on this one cheers guys
Title: Re: What The Best Intake Boot to use
Post by: 570mitch on December 20, 2010, 08:37:32 AM: When I built mine, I was told the 2000 CR250 boot was the one to use. So I did, but you have to make an aluminium adaptor ring to connect it to the kxf450 box. It does work fine, but I have since read that a KX250 boot does the job aswell.

If anybody wants one I have a spare CR airbox and boot, but I'm in the UK.
Title: Re: What The Best Intake Boot to use
Post by: royceymon@hotmail.co.uk on December 20, 2010, 08:45:52 AM: hi mitch , think ill plumb for the kx250 boot and the kxf250 box , the boots quite cheap for the kx250 so ill have a go with that !
ta jerry h
Title: Re: What The Best Intake Boot to use
Post by: ZETTNORCAL on December 20, 2010, 01:48:46 PM: I used a 99 KX250 boot. Just what I had laying around the shop. Worked great with a little adapting to the airbox.
Title: Re: What The Best Intake Boot to use
Post by: bruuuuup on December 21, 2010, 10:00:06 AM: I used a 2000 cr250 airboot on a 09 kx250f frame and when all said and done it didnt really fit exact, It was about 1" from the carb so I used 1 of j-fabs reed spacer to help out, still had to muscle it in but it worked. So in other words dont use it!
Title: Re: What The Best Intake Boot to use
Post by: royceymon@hotmail.co.uk on December 21, 2010, 10:12:50 AM: cheers bruuuuup !
Title: Re: What The Best Intake Boot to use
Post by: Reddy on December 24, 2010, 12:17:19 AM: Quote from: royceymon@hotmail.co.uk on December 20, 2010, 08:45:52 AM
hi mitch , think ill plumb for the kx250 boot and the kxf250 box , the boots quite cheap for the kx250 so ill have a go with that !
ta jerry h

Does that work? I bought a KX250 boot and couldnt get it between the shock and the frame.

In the end made a custom Ali tube and glued/fixed it to the old KXF boot. :?
Title: Re: What The Best Intake Boot to use
Post by: jholt on December 28, 2010, 01:58:13 AM: NoBody Really answered the question of which Intake boot is the best to use on the af Conversion.

Just thought that maybe someone had or could let me know what the majority of you are using for the intake boot from the air box to the carb. I thought after seeing several of these builds that there might be one common intake that worked best...

thanks
Title: Re: What The Best Intake Boot to use
Post by: alward25 on December 28, 2010, 03:21:02 AM: PM JFAB or call Service Honda/Kawasaki. They could tell you best.
Good Luck

Quote from: jholt on December 28, 2010, 01:58:13 AM
NoBody Really answered the question of which Intake boot is the best to use on the af Conversion.

Just thought that maybe someone had or could let me know what the majority of you are using for the intake boot from the air box to the carb. I thought after seeing several of these builds that there might be one common intake that worked best...

thanks
Title: Re: What The Best Intake Boot to use
Post by: livenlife699 on January 05, 2011, 01:20:10 PM: Im trying to figure out the same thing... :? I have just about everything I need except my 17mm drill bit which is a pain in the butt to find!!!
Title: Re: What The Best Intake Boot to use
Post by: jholt on January 06, 2011, 01:14:00 AM: Google Search a 17mm Drill bit I got one from a company out of Florida for $21.00
Title: Re: What The Best Intake Boot to use
Post by: don46 on January 06, 2011, 03:38:06 AM: I've done several and have used the 99-02 KX 250 airboot, you still have to make a adapter ring but it seems to fit pretty well. There are some companies that are making a whole intake system that uses a filter that clamps onto a ring, it replaces the whole stock system that looks like it may work. SH uses the CR250 I believe.
Title: Re: What The Best Intake Boot to use
Post by: don46 on January 06, 2011, 03:40:51 AM: Quote from: livenlife699 on January 05, 2011, 01:20:10 PM
Im trying to figure out the same thing... :? I have just about everything I need except my 17mm drill bit which is a pain in the butt to find!!!

you can use a 11/16 or a 43/64ths bit cant remember which one is a scosh of 17mm, like 17.05mm or call Mcmaster Carr and get a 17mm
Title: Re: What The Best Intake Boot to use
Post by: ThrottleJunky on January 06, 2011, 07:09:31 AM: Don is right. The 43/64" drill (.6718" is only .0028" bigger than 17mm (.669")
Title: Re: What The Best Intake Boot to use
Post by: sandblaster on January 06, 2011, 08:30:39 AM: Quote from: livenlife699 on January 05, 2011, 01:20:10 PM
Im trying to figure out the same thing... :? I have just about everything I need except my 17mm drill bit which is a pain in the butt to find!!!

I found a 17MM drill bit with a long arbor on eBay.
The biggest problem is that they are slightly under 17MM (16.96mm) and the holes on your frame measure close to 17.05MM.
So, you may have to ream it a bit once you drill them.
Mine now fits snug but by hand.
However, the 43/64" drill bit (0.672") equals 17.07MM and I think would be a better choice.
Title: Re: What The Best Intake Boot to use
Post by: livenlife699 on January 06, 2011, 10:48:08 AM: Quote from: sandblaster on January 06, 2011, 08:30:39 AM
Quote from: livenlife699 on January 05, 2011, 01:20:10 PM
Im trying to figure out the same thing... :? I have just about everything I need except my 17mm drill bit which is a pain in the butt to find!!!

I found a 17MM drill bit with a long arbor on eBay.
The biggest problem is that they are slightly under 17MM (16.96mm) and the holes on your frame measure close to 17.05MM.
So, you may have to ream it a bit once you drill them.
Mine now fits snug but by hand.
However, the 43/64" drill bit (0.672") equals 17.07MM and I think would be a better choice.
I have only found the 17mm on ebay and online but nowere local..what would my best bet be with getting my hands on the 43/64" bit? Must be a more common size being american?
Title: Re: What The Best Intake Boot to use
Post by: sandblaster on January 06, 2011, 01:20:53 PM: I'd say pretty good :-D
http://shop.ebay.com/i.html?_kw=43%2F64%20drill&_fcid=1&_jgr=1&_localstpos=97477&_sc=1&_sop=15&_stpos=97477&gbr=1 (http://shop.ebay.com/i.html?_kw=43%2F64%20drill&_fcid=1&_jgr=1&_localstpos=97477&_sc=1&_sop=15&_stpos=97477&gbr=1)
Title: Re: What The Best Intake Boot to use
Post by: speedywent on January 24, 2011, 04:55:19 PM: 99-02 KX 250 boot worked perfect with an aluminum adapter plate to adapt it to the airbox. 2008 KX 450F chassis. Good luck.
Title: Re: What The Best Intake Boot to use
Post by: jrkawiracer on April 15, 2011, 08:44:34 AM: does anyone have a pic of the adapter ring so i know kinda what is gona look like
Title: Re: What The Best Intake Boot to use
Post by: stevea100m on April 15, 2011, 04:20:28 PM: If you check my build out you can kinda get an idea of what your gonna have to make
Title: Re: What The Best Intake Boot to use
Post by: kxpegger on April 16, 2011, 08:59:45 AM: Quote from: jrkawiracer on April 15, 2011, 08:44:34 AM
does anyone have a pic of the adapter ring so i know kinda what is gona look like

http://twostrokemotocross.com/2009/12/want-to-build-your-own-aluminum-framed-kx500-benny-lindberg-shows-you-how/
Title: Re: What The Best Intake Boot to use
Post by: jbersano on April 25, 2011, 01:33:18 AM: I used a kx250 2002 airboot on a 05 kx250f. Works GREAT!