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Discussion Starter #1
ok 1st off i did do a search before i posted this. it`s this right? jetting..mian jet is for WOT only? neddle is 1/4 to 3/4? and moving the clip down is richer? and air screw and piolt are 0-1/4 throttle?? so if i run a lean main jet but dont rum WOT until i reach the right altitude it should be fine right?
 

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Depends on how lean you run the main. There's some overlap in the circuits. Somebody was talking about that a week or so ago.
 

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Discussion Starter #3
well yes but.i`m not talking a big jetting diff.. but i have the rest right? needle clip is down is richer?
 

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Yes as you move the clip down you are actually raising the needle.
 

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If you are starting off low and going up high imediately,
I could see the need for something like this.

For up to a 4,000 foot difference I could see it,
We jet for 3,000 foot increments,
and that really is a ton of elevation change for a single ride.

For something like that, I'd probably jet as you are suggesting,
and then I'd pull my emulsion (spelling?) tubes to be sure til I got up high.
Those are the vaccuum tubes that go from your carbs to air box.
Knowing that little trick can also be used to not waste your motor when you get down low to the parking lot on really cold days.

Any more than about a 4,000 foot change, and I'd be re-jetting on the hill.
I've done just that on several occasions and it's not so bad,
Even on my old triple, it was only like 10 or 15 minutes at most.
 

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if you drop the mains you also change the flow around the needle. since there is a less area around the needle to pull up. so if you drop a lot in mains you need to raise the needle a little for safety.
 

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Originally posted by Student Driver
[br]For something like that, I'd probably jet as you are suggesting,
and then I'd pull my emulsion (spelling?) tubes to be sure til I got up high.
Those are the vaccuum tubes that go from your carbs to air box.
Knowing that little trick can also be used to not waste your motor when you get down low to the parking lot on really cold days.
Just so I get what you're saying, removing the the tubes that connect from the carbs to the airbox will richen the mixture? Connecting them leans the mixture because more air is in the fuel/air mixture correct?
 

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Ya Shortstop,

If you pull the tubes from the air box and leave the other end on the carbs,
you do get a little richer.
You also lose RPMs, and with them some top end performance,
but for a short time to get up high, I've done it.

It can save your motor in a pinch if need be.
 

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That's exactly what I wanted to know. I'll keep that in mind if I'm ever in that situation. Thanks Student Driver.
 

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Discussion Starter #10
Originally posted by madcow
[br]if you drop the mains you also change the flow around the needle. since there is a less area around the needle to pull up. so if you drop a lot in mains you need to raise the needle a little for safety.
sorry i was just reading back on this and now i seen this.
drop my mains i need to RAISE my needle?? doesnt this make it lean?
or it came with 168 mains i put it up to 175s to be safe but it was to much now i put 170s in it but the needle was on the #2 from the top i put it down to the stock #3 but think it should go back up.. but i`m chicken i burned a yammie down one time and it cost me my left nut, but my wifes 600 will allmost take me and its stock i`m pipes and reeds and its a 700
 
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