Remember, the CVK has "built in" altitude compensation - The slide spring has a "set" resistance curve to slide lifting/reactions. Higher alts (lower air pressures) lift/react the slide slower because the engine vacuum in the thinner air exerts a weaker force. Adding to this: As alts increase, the engine output decreases, further lessening the vacuum exerted on the slide spring to lift/react the slide. Thus, leaner fueling curves as alts increase.


I always knew CVK carbs had some altitude compensation but I didn't know it was a function of the slide spring. Thanks Klxster reading your post are almost like going back to school always learn something.

 

Well I got my header tonight around 5:30 had dinner and went out Threw it on ,started it up nice mellow note ,let it warm up real good ,Took it out for a trial run , just in the neighborhood no helmet so I could hear the pipe With the header I love it! Came back, Helmet on took on the road got it up to 67 and it had more , Way too many deer around here and not enough straight away .. I'm looking forward to re jet and we'll see how it does I'll let you know By the way Thanks KLXSTER for talking me into the Mega Bomb solid choice .I ordered the 152 But I think I'm going in tomorrow and put the 155 in and see how that all works out .I do spend some time up around 7000 -8000 'in the summer ...

 

The correction chart I use stops at 6k ASL. But at 6k with summer temps (85+°F), you're all the way back to a DJ134.. So this summer, you'd better keep a bunch of jets with you.. The kits' DJ132 should be good while at 7-8k ASL.

According to a snowmobile formula I found, @ 8K ASL, your bike will loose about 6 hp.. Considering the new power levels, this puts it back to about the same power you had when stock... It'll be interesting to hear your report this summer..

 

So if I rej et to a 155 and do the other adjustments and leave it alone when we go camping in the summer at those elevations I'm ok with the loss of power I'm just putting around in the mountains ...

 

No Don. If you are going to "squat" this summer at 7-8k, you should rejet to the DJ132. On the other hand, I really don't know how well/badly the K152 will perform up that high with summer temps, maybe it'll be ok.. I wouldn't count on it..

 

I ordered the 152 and will wait to re jet when it comes in, We have two camping trips, The one in late July @ 6500',One in late August 5500' So I will re jet to a 132 ,clip on third slot, DJ spring , put snorkel less lid back on for one month. When were done re do everything to the 152 lidless setup when we get back , ?

 

Ok Don, you're lost in the woods again.. It's almost like you have a little devil on your shoulder whispering crazy talk in your ear..lol

Let's go to PM (private messaging) with this and get you back on track..?

PM sent.

 

I've had this cold for two weeks now and it's like I take a couple of stupid pills every morning with my vitamins .No joke Can't think straight , loss of common sense, lots of confusion ... ..,Anyway putting all this stupid behind us here. I'm going to follow your instructions to the letter when my 152 comes in..On a different topic but related ,I took off the smog stuff to take advantage of the lower exhaust temps ,along with the Mega bomb , after a spirited ride I carefully touched the pipe and it was no hotter than warm iron...

 

Finally had some time to get back to the bike , Followed klxster's recipe with the 152. Bike runs really well, Took it on the frwy to see how much more top end it had ,Got it up to 75 it had more, I wasn't looking for a ticket so I backed off, I'm really happy with it . Still won't power wheelie but I'm cool with it ,already have bad knees from wheelies gone bad ..Anyway Big thanks to klster for all his time and effort ! Lid's in the attic

 

My pleasure Don.. Regarding your bikes' new power, I couldn't have done it without ya (lol). Good work!

Readers should remember that Don has to run a K152, instead of the "normal" K158, due to his MUCH higher altitudes..





Wait till yall hear what our resident lady mechanic has done to her '07 KLX..(Steffaroo83)