'85 xj700x Carburetor Troubles?

In that .pdf, it mentions I can purchase the nipple that wedges into the base of the carburetor... Where do I purchase it?

 

Colortune helps for the mixture screw.
Shift after you get into the powerband range ~6k.

 

Look at my FZ600 thread in tech chat. For wet setting all you need is some spare battery vent hose and some red electrical fittings, there are pictures showing what I did

 

Start a conversation with Chacal.

 

It's a sportsbike engine, not a V-Twin. Rev the crap out of it and it will respond with pure, unbridled joy.
The indicted redline is a bit on the conservative side (but don't exceed it. it's there to provide a factor of reliability).

 

I've never even heard of Colortune until now. I will be buying one when I get my next paycheck. I've already spent a little more than I was supposed to.

I will try this, I seem to try shifting around 4-5k.

I will check it out as soon as this reply is posted. ( I thought of trying to wedge some clear tubing into the hole, and try it that way... =-/. This would probably be a bit better.)

 

Okay, so everything I can do at this current time is done until payday. It's running a whole lot better. Why I didn't mention this I don't know... After I posted this, I took it for a spin on the highway. It topped out at 60... no power at all. The carburetor sync fixed a lot of the minor problems I was having. After the sync, I took it back out, and got to 85 before I slowed down ( speed limit is 60 ). It also starts a lot easier. Rpms, are at around 1,050, and the bike is loving life. I heard what sounded like arcing earlier, and I just checked. Plug wire 2, and 4 are arcing to the valve cover, and 4 also to the frame. I will pull them apart tomorrow and clean them. I did find an article on someone having that problem, took everything apart, cleaned, and put them back on and all was well. I think they are around 10k ohms, I will look it up. Unless someone knows off the top of their head.

 

You really should just plan on splicing in new plug wires, replacing the wires (Plug wire digging into coil method), or covering the existing wires with self-amalgamating tape. Cleaning won't do crap if the wires are arcing. Anothr option is to get new coils that have easily replaceable wires (Honda CB750 coils, or contact Chacal for Dynacoils).

 

I'll end up buying new wires, just can't right now. The link for "Plug wire digging into coil method" is dead. The amalgamating tape is a possible temp fix. The one thread I found, the guy took the innards of the plug boot apart, and cleaned everything with sand paper, then put it all back together and the arcing quit. I'll have to just look into this stuff when I get the cash to spend. I'm going to try to clean them, hoping the path of least resistance is through the plug when I'm done.

 

Not dead. I just messed up and posted my private bookmark for it.
Here's the public link Spark plug wires
The wires are moulded into the coil housings. Another method Ive used sucessfully is to cut the wires as short as I can get away with and use NGK splicing fittings to add new wires.

 

from 750 owners manual and as you can see yamaha does not recomend down shifting all that much
mostly you want to be able to move out on the bike if the need arises so correct gear for the rpms

 

So basically, I'd cut open the coil, shove a new piece of spark plug wire onto the metal contact, then fill in the void with the 5 Minute Epoxy. I assume the spark plug end will not matter as long as it fits into the recess between the valve covers.

Those speeds sound more like how I shift. Can't be much different for my bike.

Thank you both.

 

from 700xn and 700xnc owners manual

 

Yeah... That seems a little too quick to me. I'll take the bike for a spin in the morning, and take note on my shift pattern.

 

As if! Shifting 4 times before you hit 40kph?! That is too short! When would you hit top gear, 60? That would mean that you are in top gear for over a 100kph range! I've never seen such close shift points. I'm not an expert, but I think that's being overly cautious.

 

thats yamahas shift points, myself I like the 5.3 sec trip to 60mph

 

I've owned a MaximX750 and I can tell you these engines like to rev a lot, prepare to a good kick in the butt when you hit the power band (6 K rpms and up). But for a more relax ride, shifting around 5000 or 5500 would be ok.

 

The spark plug caps unscrew from the wire. If they are in good condition they can be swapped over easily. The caps contain resistors, so if you get new caps you will need to match the resistance, or use resistor plugs.
I can't remember if they are 5k Ohm, or 10K Ohm on the 550. Guys?

 

Those are the recommend shift points for achieving the best fuel economy. Keep in mind what was going on in the world when the manual was being written.

 

Around town I do my best to keep the engine in the "quiet zone;" between 2500 and 3500 RPM. This requires the I use every ounce of maturity that I own.