WHICH JET KIT, AND HOW HARD IS IT TO INSTALL
Apr 26, 2002 | 09:46 AM
#1
Thread Starter
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Trailblazer
Joined: Mar 2002
Posts: 26
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Well, it is about time to put something else into my 650. I am going to re-jet and put some air holes in the top of my airbox lid. I have a buddy that is going to assist me with the putting in the jet kit because like I have said before, I am no mechanic.
I have added a hitch and 26 inch Mudrunner tires on mine so far. My speedometer said that I lost 1 mph top end with the larger tires making it 60 mph. I had my gps going and it said that I was actually going 61.5 mph. Before I changed the tires, my speedometer said that I was going 61 mph but would occasionally hit 62 mph for a second or two.
Again, my question is how hard is it to install the jet kits on the two carbs, and how much more speed will it give me you think?
Thanks in advance.
Longarm.
I have added a hitch and 26 inch Mudrunner tires on mine so far. My speedometer said that I lost 1 mph top end with the larger tires making it 60 mph. I had my gps going and it said that I was actually going 61.5 mph. Before I changed the tires, my speedometer said that I was going 61 mph but would occasionally hit 62 mph for a second or two.
Again, my question is how hard is it to install the jet kits on the two carbs, and how much more speed will it give me you think?
Thanks in advance.
Longarm.
Apr 26, 2002 | 11:07 AM
#2
Pro Rider
Joined: Oct 2001
Posts: 2,776
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I think the K&N and Dyno are the same kit. At least, someone else told me that.
I have the dyno, and it cam with about 12 jets and two adjustable needles. Maybe somebody can look at my photo and see if that's what the K&N kit is? http://atv.dnsalias.com/atv/prairie6...ir=&pic=22
2 hours? Half of this was kneeling, kinking my neck looking up at the float bowls, the other half was standing on the left of the quad looking down on the carbs.
-I did the jets without removing anything, It took about an hour, mainly because I kept having to try different methods of getting a phillips head on some of the screws. Make sure you have screwdrivers that are the right size and in good shape or you may have a little problem cuz the screws are all tight, and sometimes you don't have a straight shot. Old jets are in really tight, I used a ratchet with a 1/4 socket and a flathead bit since I had no flatthead screwdriver short enough. I have a lot of tools, I use them so much that some are worn, lost, or broken. I feel that I have gotten a little behind on keeping the right selection of srewdrivers.
-I removed the seat, engine cover, and airbox to do the needles. It took about an hour the second time I did this. The screws were a lot easier to deal with, just apply a little force to the carbs to tilt them. You ought to have a magnet for this one, so you can just lift the needle out without removing the diaphram. I dropped a screw on the motor twice, and the magnet made it easier to retrieve.
Your quad will run better on the bottom end by a long shot, and gain a little bit on the top end. It is hard for me to say, since I did the filter at the same time, I gained about 5mph from the two of these, but I was very slow to beging with, due to heavy tires.
I have the dyno, and it cam with about 12 jets and two adjustable needles. Maybe somebody can look at my photo and see if that's what the K&N kit is? http://atv.dnsalias.com/atv/prairie6...ir=&pic=22
2 hours? Half of this was kneeling, kinking my neck looking up at the float bowls, the other half was standing on the left of the quad looking down on the carbs.
-I did the jets without removing anything, It took about an hour, mainly because I kept having to try different methods of getting a phillips head on some of the screws. Make sure you have screwdrivers that are the right size and in good shape or you may have a little problem cuz the screws are all tight, and sometimes you don't have a straight shot. Old jets are in really tight, I used a ratchet with a 1/4 socket and a flathead bit since I had no flatthead screwdriver short enough. I have a lot of tools, I use them so much that some are worn, lost, or broken. I feel that I have gotten a little behind on keeping the right selection of srewdrivers.
-I removed the seat, engine cover, and airbox to do the needles. It took about an hour the second time I did this. The screws were a lot easier to deal with, just apply a little force to the carbs to tilt them. You ought to have a magnet for this one, so you can just lift the needle out without removing the diaphram. I dropped a screw on the motor twice, and the magnet made it easier to retrieve.
Your quad will run better on the bottom end by a long shot, and gain a little bit on the top end. It is hard for me to say, since I did the filter at the same time, I gained about 5mph from the two of these, but I was very slow to beging with, due to heavy tires.
Apr 26, 2002 | 03:44 PM
#5
Range Rover
Joined: Apr 2002
Posts: 188
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Yep, drain the coolant. If you are gonna remove the carbs from the engine then you have to drain the coolant at least low enough to disconnect the coolant lines from the carbs. I guess because of the tight confines and the location of the carbs between two big heaters Kawasaki ran engine coolant though the carbs.
Apr 26, 2002 | 05:02 PM
#7
Pro Rider
Joined: Oct 2001
Posts: 2,776
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Kawi appears to do better at research than other quad manufacturers.
Yamaha 660 (and older yamaha's do it too) are experiencing carburator vapor lock, and gas boiling in the gas tank. This makes some 660 owners real mad. My friend's 660 doesn't vapor lock (but that big 660cc jug shakes the atv like a belly dancer).
I am glad kawasaki was smart enough to cool the carbs. But, every little hose and wire makes more work to mess with stuff.
Just to remind, incase anybody missed the second message, you do not have to take any water hoses off to change the jets.
Yamaha 660 (and older yamaha's do it too) are experiencing carburator vapor lock, and gas boiling in the gas tank. This makes some 660 owners real mad. My friend's 660 doesn't vapor lock (but that big 660cc jug shakes the atv like a belly dancer).
I am glad kawasaki was smart enough to cool the carbs. But, every little hose and wire makes more work to mess with stuff.
Just to remind, incase anybody missed the second message, you do not have to take any water hoses off to change the jets.
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Apr 26, 2002 | 05:45 PM
#10
Pro Rider
Joined: Feb 2001
Posts: 327
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Guess I had a close call.I didn't realize we had coolant lines in the carbs.I just had mine apart to check out the choke cables and didn't even notice!!!
I had the carbs off the intake boots without disconnecting all the lines.It gave me just enough room to get them out.Guess I didn't take enough notice of the lines running to and from the carbs.I only disconnected the breather box vent and the fuel line.You can get lots of room by just doing that.
I had the carbs off the intake boots without disconnecting all the lines.It gave me just enough room to get them out.Guess I didn't take enough notice of the lines running to and from the carbs.I only disconnected the breather box vent and the fuel line.You can get lots of room by just doing that.