RockinRandy 
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Bike: 1983 Honda Nighthawk CB650
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« on: January 30, 2012, 07:35:44 AM » |
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So I just bought a 83 nighthawk 550sc. I bought it knowing that there might be some issues like the carbs leaking and need to be rebuilt. The guy was good it even came with a clymer manual and I am loving these forums I figured out how to get the carbs out and rebuild by looking at these forums and looking at the book. But the problem i am finding is that when I bought it there were no wires on it but am unsure of where they hook to i.e. i know that 1 and 4 go together and that 2 and 3 go together but am unsure which "coil pack" i think they are called go to which side. I have found the coil packs but am unsure which side each pair goes to and then which one goes on top/bottom if that even makes a difference. I also have another question on the sticker for fuel type it says 94 ron and am unsure as to what fuel to use on it was just going to put some midgrade in it and some fuel stabalizer. Just trying to make sure I don't screw things up worse. Thanks I will let anyone know if I have any more questions. I might be able to get some pics of it when I can pry the camera away from my wife.
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Munkey
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Bike: 1985 CB700SC Nighthawk S
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« Reply #1 on: January 30, 2012, 08:32:06 AM » |
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Left coil should fire cylinders 1 and 4. Right coil filres cylinders 2 and 3.
Does not matter which post on the respective coil goes to which cylinder.
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1985 CB700SC Nighthawk
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bajakirch
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Bike: 1983 CB550SC
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Join Date: May, 2009
"Get on your bikes and ride!" - Freddie Mercury
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« Reply #2 on: January 30, 2012, 10:48:20 AM » |
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As for fuel, I always use top grade. It's been debated on this site and some have said using the higher octane doesn't give any benefit. But I figure, for a few cents more, it's worth putting in the higher octane.
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It's not a big motorcycle
Just a groovy little motorbike
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Bumblebee
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Location: Nomad
Bike: 1982 CB650
Posts: 5419
Join Date: Apr, 2008
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« Reply #3 on: January 30, 2012, 11:00:03 AM » |
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Fuel stabilizer doesn't do anything if you're running the motorcycle. Just keep fuel in there that is less than about 6 months old and it'll be ok.
Most fuel related problems are not the fuel in the tank. It's the carburetors when the fuel dries out of the fuel bowls and leaves the residue behind which restricts small passages and keeps things from moving.
Fuel grade? It's pretty much the same stuff as far as the motorcycle is concerned as long as the engine is running properly. Some people swear by higher octane but I can't tell the difference when looking at real world performance numbers..well no difference other than it takes more money to buy the spendy stuff that goes the same distance.
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You can't get lost if you don't know where you're going.
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Option13
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« Reply #4 on: January 30, 2012, 11:23:32 AM » |
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High octane isn't necessary for these bikes. I ran it for a while when the bike was new to me, then switched to regular. Haven't noticed a difference yet.
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'84 650 - "Naia" | DDM HID | 700S Rotors | SS Brake Lines
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RockinRandy
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« Reply #5 on: January 30, 2012, 05:54:07 PM » |
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Thanks just the 94 ron had me confuesed i figured it would say oct for octane am still unsure as to what ron means. I am just going to put the stabilizer in it so when i get it running i can store it for a couple more months until i can ride it. Thanks munkey for the help on where the wires went i thought that might be the way just wanted to clarify. The carbs should be back on tomorrow and hopefully she will run pretty for me. If I have any more questions I will ask.
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RockinRandy
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« Reply #6 on: January 31, 2012, 08:07:11 PM » |
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I was looking at one of the plug wires and it seems to be broken. I am not sure where to get plug wires for this bike at other than the dealership. Was wondering if anyone knew where to get some. I really can't see paying $85 just to get a single wire the others were brand new still in the box and am still unsure as to why this one was broken. But if I can find a new set then I will just get that one because I am unsure of these wires actually being new now they look like it and came in a box with the bike though. Got the carbs on it and was just finishing up the final touches and noticed that the spark plug wire was hanging down. When I get this done I am going to finish changing all the fluids in it so its ready for some riding come spring.
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skramer360
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Life is short. Eat dessert first.
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« Reply #7 on: February 01, 2012, 06:34:52 PM » |
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I looked in the book for the resistance range of the wire, and went to the car junk yard with my multimeter and found one that was within range and bought it for a couple of bucks. The color doesn't match (its red and all the others are black), but its been on there for over a year and still runs fine. YMMV
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I'd rather be riding my blue '85 (700s)
Steve
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jts6yf
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Bike: 83 Nighthawk 650
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Join Date: Sep, 2010
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« Reply #8 on: February 01, 2012, 11:20:45 PM » |
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I bought new spark plus wire recently on fleabay. They weren't too expensive. Ill try to find the link. They were listed for a 650sc but I'm gonna assume your bike uses the same. It came with 4 wires, all you had to do was cut to length, then enjoy!
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Option13
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« Reply #9 on: February 02, 2012, 06:58:48 AM » |
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650/550 engines are almost entirely similar, so there's no reason that the same cut to fit wires shouldn't work on both.
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'84 650 - "Naia" | DDM HID | 700S Rotors | SS Brake Lines
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jts6yf
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« Reply #10 on: February 02, 2012, 07:29:55 AM » |
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RockinRandy
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« Reply #11 on: February 02, 2012, 10:08:22 AM » |
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Thanks for the link and the help I will just cut to fit my wire that I need.
And as promised earlier some pics, these were before I rebuilt the carbs so you can see the puddles it was making:
Also the black from the stickers was removed and it looks nice now
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wiskey
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Bike: 1985 cb700sc
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« Reply #12 on: February 10, 2012, 08:21:48 AM » |
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z1 performance has great deal on dyna wires, they are cut to fit.
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