Triumphrat

07-03-2005

Just a quick question, i have recently moved from sea level to 9200 ft. W/out my repair manual and am not sure what specific adjustments are neccessary for the altitude.... thanks all for the time and help.

I just thought one of you could help while i wait for my manual.

Thanks!

dolson · 07-04-2005

Well, that all depends on what you are riding.

Don

j98sprint · 07-04-2005

At that level there is less air so you'll have to run less gas through the carb(s). Sorry I can't be more specific than to say a carb(s) leaning is in order.

j98

07-04-2005

My appologies for my vague description.... I am riding a Honda CMX450.. and i need to know if i adjust the timing?.. the idle speed?.. or such..

thanx again all

badrufus · 07-04-2005

You might want to go down in size on your carburetor main jets. I don't know what kind of carbs are on that bike, or if it even uses carbs, but on constant velocity carbs such as the Keihin CVK, there is some inherent correction for altitude due to the effect of the change in air pressure on the diaphragm. In general, you will run richer at altitude than at sea level, so you want to--as j98sprint said--lean out the bike, either by using smaller main jets, or increasing air flow with a freer flowing filter and/or exhaust. Check with the closest Honda dealer for exact recommendations for your bike.

seumas · 07-09-2005

I'm at about 4500 ft. My Sprint ran rich with the stock jetting until I put in the K&N and changed the pipes. Now it's just about right. Since you're another 4500 ft. up I think you would hafta rejet too.

07-11-2005

Thanks all for your advice, i will get to it right away.. and thank you for your time ;D..

D