[CALVIN]

Hi,

I have two Jetting questions. We ride in PA at an altitude of 1200 ft. We are plannibg a trip to CO and will be riding @ 7000 ft. WE have a 230F stock & 150F stock, plus a 230F with a Power up kit installed (purchased used with it). Can I just pull the snorkle & baffle on the stock bikes & get them to run at 7000 ft? If not, what do I need to do? What do I do on the 230F with the power up kit?

Thanks...

[JohnSBA]

So the issue here is that although there is the same percentage of oxygen in the air at just about any elevation, the number of oxygen molecules is less by volume given there is less air pressure at 7000ft than at 1200ft. With less oxygen, your bike will generally run richer at higher altitudes (i.e same gas flow, but less oxygen). I'm not a jetting expert, but you can google search and find plenty of examples of jetting at different altitudes for just about any bike. I think its safe to say you bikes will run ok at 7000ft but will be down on power unless you reject. If it was me, I'd bring jets and the tools necessary to do a swap, but I'd leave it be until I get there and try it out. You'll want a couple smaller main jets and pilot jets to experiment with.

On the stock bikes with the snorkle+baffle, if you pull the snorkle, it will allow more air, so that will lean things out, which may be a simple way to compensate for the higher elevation, I would definitely do that anyway since we all know the snorkle robs your machine of usable performance anyway.

Good luck and have fun.

[CALVIN]

Thanks for the advice. I am not as worried about the stock bikes as I am about the ne with the Power Up kit (& bigger jets). Hopefully we are OK. Based on some instructions (pics included) that I've read on line the 230F looks like more than I want to tackle for a week long trip out west.

[dsrpilot]

I had a 230f with the powerup kit (newphew has it now). I normally ride around 800ft. elevation, but when I went to Hatfield McCoy trails which go to 2000+ ft elevation my bike was running rich and stumbling/bogging just off idle.
Normally my fuel screw is 2 1/4 turns out, but at this elevation I ended up closing it more and more until I had it all the way closed. The bike ran much better, but not perfect.

When I went back to my normal riding elevation I hadn't reset the fuel screw and my bike wouldn't start. After remembering and setting the fuel screw back at 2 1/4 it started and ran normally again.

My wife's 150f had the power-up kit installed as well, but her bike required no adjustment and ran normally at both elevations.

I'm thinking that the 6,000 ft elevation difference will cause some affect in your bike.

Take me with you to Colorado to ride and I'll change your jets for you on the trail !!!

[CALVIN]

Hey Pilot,

Thanks for the input. I will probably go stock but open up the air (baffle if noise is OK & snorkel) on the stock bike. I will probably buy the quick adjust fuel screws after reading your comments. Not sure years ago & on the powered up bike. I may have it rejetted in CO.

I wish you could join us. We went three years ago & the riding is great. we rode for 6 hours & never say the same trail. There are lots of moderate climbs which are good for old guys like me reliving their younger days, & some great views!

Thanks again,

Calvin

[dsrpilot]

Have you been to Hatfield McCoy Trails? It's not Colorado (my favorite state ever), but it's close. Check out www.trailsheaven.com if you haven't.

Where in PA are you? I'm in Pittsburgh. Robinson Township.

Where are you going in Colorado? I used to spent a lot of time in the front range between Denver and Colorado springs rock climing and camping.

Ride safe and have a great time in Colorado !!!!

[CALVIN]

We live in North East PA (the town, not the region). It is east of Erie. We ride mostly on our farm, but occasionally on at a friend's in Warren PA. We rode at Rainbow Falls & Rampart around Colorado Springs.

Thanks for the info in WV. Maybe we can carve out some time to head down there.

Calvin