jetting for altitude

There is a better that good chance one of us up
there hiking with you will have any possible jet
wou will need.
I have an assortment of Kehein <sp> jets from around
150-190. One of them will be sure to fit.
Worry not. I rode my KDX240 with it's Jeff Freddett
suggested jetting n Idaho in 2002 and it ran great.
SloCalSpode
*****************************************************
Craig Faison < wrote in message
<SNIP>
 > Bike is a KDX220.
<SNIP>
 >is the remaining adjusment likely to be enough?
 >
 > thanks,
 > Craig<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: jetting for altitude 

"Craig Faison" <cfaison DeleteThis @magpage.com> wrote in message
news:Pine.BSF.4.33.0407231047550.30584-100000@alaska.magpage.com...
 > So, since I'm probably going hiking in Idaho soon, I figure I'll bring my
 > bike along and maybe take a spin while I'm in the area.
 >
 > Bike is a KDX220.
 >
 > I'm currently jetted for sea level (and finally acceptably so)... what
 > kind of changes should I expect to make for Idaho? I seem to recall
 > reading that elevation varies from ~4,000 feet to nearly 10,000 feet.
 >
 > I have a couple of sizes smaller mains and one smaller pilot... should I
 > grab a few smaller sizes just in case, or is one or two steps down from
 > 'good' at sea level likely to be adequate? My needle is currently at the
 > middle setting... is the remaining adjusment likely to be enough?
 >
 > thanks,
 > Craig


I would say two sizes smaller on the main. That's what was suggested to me
and what worked on the RM. That's what I'm planning on this year. I didn't
have the next step down on my pilot on that RM, but moving the needle all
the way down/clip up/whatever, was enough to smooth it out. Bring several
of each, if you can. I just bought 3 sizes down of each for both bikes and
spent about $12 total. I'm leaving with 2 smaller main, one smaller pilot
installed so that I may not have to do anything when I get there.

Hope that helps.

John<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: jetting for altitude 

On Fri, 23 Jul 2004 10:52:06 -0400, Craig Faison <cfaison.DeleteThis@magpage.com>
wrote:

 >So, since I'm probably going hiking in Idaho soon, I figure I'll bring my
 >bike along and maybe take a spin while I'm in the area.
 >
 >Bike is a KDX220.
 >
 >I'm currently jetted for sea level (and finally acceptably so)... what
 >kind of changes should I expect to make for Idaho? I seem to recall
 >reading that elevation varies from ~4,000 feet to nearly 10,000 feet.
 >
 >I have a couple of sizes smaller mains and one smaller pilot... should I
 >grab a few smaller sizes just in case, or is one or two steps down from
 >'good' at sea level likely to be adequate? My needle is currently at the
 >middle setting... is the remaining adjusment likely to be enough?
 >
 >thanks,
 >Craig


I would check your manual for what it recommends for jetting at those
altitudes. On my bikes(250s or 300s), it has been as simple as 1 size
smaller pilot and 2 sizes smaller on the main. As long as I don't
have to clean it out in all but the highest elevations, I'm happy.
Your needle should be OK.

Mike Baxter

2004 KTM300 EXC
2000 GasGas EC300
1997 GasGas JXT270<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: jetting for altitude