The plug on the bottom of the float bowl will give you access to the main jet. You will need to be richer, so make sure you go up plenty and work your way down.
![]()
Black Magic Twin Pipes/ZR580 carbed NEED JETS HELP!
So I recently got a pair of black magic 580 pipes for cheap and are gonna throw em on. BUT I need jets, and I have no clue where or what type of jets I need to get. Any links where I could by some would be well appreciated. Its a 95 ZR 580 carbed. <<LB>> :huh:
1 - 8 of 8 Posts
Its all going to depend on what elevation and temperature you are riding in. ACs are jetted rich from the factory. I would use the factory recommendations according to the chart on your belt shield as a start a go from there. Even with pipes I bet you will have to go leaner.
Leaner? I live in central minnesota if that helps. Do I have to change the jets of just adjust the ones there?
unfortunately you have to switch out the jets. There should be a decal on your belt cover, the one that has the extra belt on top that will give you the manufactures recommend jets for whatever elevation and temp you are riding in. I have reduced mine from the recommended 370 down to 330 and is just a touch on rich side. You need to find a happy medium with the temp changes unless you want to swap out your jets all the time. There are kits you can buy that will change your main jet mixture without changing jets but I have never used them. I am sure someone else can help you if that's the way you want to go. according to a site I just googled the majority Minnesota is between 500 - 1000 feet about sea level, I am at about 2000 feet above sea level so you will want to go a bit richer than mine.
As far as where to buy them, pretty much any snowmobile shop should have them.
As far as where to buy them, pretty much any snowmobile shop should have them.
1 more thing I forgot, always error on the rich side and as 95zr580 said start rich and work towards lean. You will burn a piston if you go too lean. If you don't know already, you should learn how to read your spark plugs, black and wet rich, dark brown and dry or just a bit wet a little on the rich side, light brown perfect, white too lean.
The jets are fixed size, so you have to change them, they are not adjustable. They Mikuni Hex jets and your local snowmobile dealer should carry them, except for Yamaha dealers because Yamaha used a different style of jet in their Mikuni carbs.Leaner? I live in central minnesota if that helps. Do I have to change the jets of just adjust the ones there?
If you are going to modify the engine/exhaust of your sled you really should learn how to tune the carbs before doing any modification. The time spent learning to tune and doing a proper baseline set up is much less costly than melting pistons and ruining cylinders. each main jet is good for a range of about 10*C (25*F). The device NineLives mentioned is Tempa-Flow. It adjusts the fuel delivery automatically by varying the air pressure in the float bowl, and they work wonderfully. However, you still need to do a proper baseline set up first.
Where did you get the twin pipes at I go a zr580So I recently got a pair of black magic 580 pipes for cheap and are gonna throw em on. BUT I need jets, and I have no clue where or what type of jets I need to get. Any links where I could by some would be well appreciated. Its a 95 ZR 580 carbed. <<LB>> :huh:
1 - 8 of 8 Posts
Arctic Chat : Arctic Cat Forum
Arctic Chat Forum is a community to discuss Arctic Cat 400, 440, 500, 650, snowmobiles, sleds, ATV's and more. Join the fun!
Full Forum Listing
Recommended Communities
