Author Topic: 1978 CB550K Project - First Bike.  (Read 6608 times)

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Offline pauldperrin

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1978 CB550K Project - First Bike.
« on: February 12, 2014, 10:29:42 PM »
Disclaimer: Terminology may not be correct at all times. Feel free to correct anything I've said or correct my way of thinking because this is all new to me.

          Let me start by saying I have not done any work on bikes in the past. All I have done with cars really is changing ball joints on my truck or alternators, starters, brakes etc. I’ve always wanted a project bike rather than a new bike because I love working with my hands and bringing things back to life, whether it be computers, guitars, or anything else that I can understand enough about it, to fix it.

          A few years back a couple friends and I started talking about getting bikes and making trips and all of that good stuff. I started looking into 750’s of course running into all of Carpy’s builds and videos but over time I decided that I’d rather go with a 550. Anyways, time goes by, life happens, I get married, and I now have a bunch of crazy new in-laws. Fast forward to a couple months ago.

         So, the wife and I are hanging out at her parent’s house one night around Christmas time and I start talking to my Father in Law about how I want to get an old Honda someday, fix it up, and go on some trips with friends. Turns out my Father-In-Law had a bike that he hasn’t ridden in a couple years due to knee problems. I was like, “oh yea? What kind?” I had no idea what it was at the time, I just knew it was covered up next to the garage. Get this, it’s a 1978 CB550K with a little over 16k miles on it.

         So by the end of the night he just up and gives the bike to me. *Jaw Drops* Now I’m just sitting there thinking how crazy this is that he has the model of bike I decided I wanted before I met him and he just gave it to me? 

*Enter the relationship between the bike and I*

          So, the bike did not have a title. At first this was a kick to the gut because I had been on this forum plenty of times and looked at builds from beginning to end and also seeing people having a hell of a time getting a title for an old bike and sometimes just parting it out or getting rid of it. Now in my head I’m thinking this can’t be how it will turn out for me because what are the odds of someone giving me a bike that only I really knew I wanted, down to the model!

          So, I did some searching around and found a loophole in obtaining a title through registering bikes in Vermont. As Vermont does not title bikes over 15 years old, and you do not have to live there to register a motorcycle there, the Vermont registration becomes the new proof of ownership and is transferrable to CA (or any other state from what I’ve heard). When transferring to CA they will give you a new title and registration. (Completely legal, if anyone wants more info on this let me know).

          Now that I have the registration, I have been putting in a little bit of work. This isn’t going to be a full restoration or anything (yet), mostly cleaning and ordering parts I know I need to get the bike to a ride-able state. What I’ve done so far:

1.   Cleaned out the little rust in the tank using Phosphoric Prep & Etch, rinsed a few times with baking soda & water, then with water, blew            everything I could out with compressed air, put in some HEET and drained it and blew it out again, and finished with some Marvel Mystery Oil and a couple gallons of gas. (Process found on this forum)

2.   Removed the carbs and cleaned the bowls/jets with carb cleaner (removing all gaskets first), and blew everything out with compressed air. All the floats look fine, the float valves all have good spring action, I could now see through all of the jets. The carbs aren’t shiny on the outside but what needs to be clean is clean.

3.   Ordered new Airbox boots from Paul Gabor because he is the only person I could find that makes them for the 77 and 78 550s. The boots that were on there were cracked and had old electrical tape on them. They’ve already been shipped and should be coming in tomorrow.

4.   Ordered some new fuel line and an in-line filter just in case there is still junk in the fuel tank as well as fuel line for the carb overflows.
While waiting for parts, I’ve taken scotch-brite pads and Marvel oil to most of the bike, removing rust, and anything else I could find. (More pictures to come this weekend.) This weekend I plan on actually getting the bike started. I’ll re-install the carbs, change the oil, check the spark plugs, and see what happens.

          Assuming I get the bike started, the next thing to tackle will be the front brake. I have downloaded the manuals for the bike from the forums and I also have the Clymer manual (as it is the only manual I could find that covers the 78). Hopefully the piston isn’t pitted and I can clean it up. The pads look like they are lightly used. I need to check the disc to see if it’s thick enough to resurface and drill (Hopefully locally). I’ll most likely need to order a new brake line as well as the ends. But that got me thinking of the god awfully long fork tubes. I want to find out what I’m going to do with them before I order lines. I don’t know if lines can be trimmed so I’d rather have the front end sorted out before I order the line.

          I have read some threads about spacing the pre-load spring 2” and trimming the main spring 1.5” to get a 2” drop, but I don’t know if 2” is enough. These can’t be stock, they are ridiculous. Next option would be getting the tubes cut down and threaded. I am new to all of this so I don’t have any local sources that or if it’s worth doing that or finding some stock tubes floating around. Eventually I would like to install a modern front-end but I think I’ll save that for next winter.

After I sort out the front end to-do list includes:

1.   New clutch and throttle cables due to the shorter fork tubes
2.   Rear shocks
3.   Rear brake
4.   And tires

After all of that, I hope the bike is safe and ride-able. (I’m sure I’m forgetting tons of things)

Parts I’ve ordered that have not mentioned yet:
-Sport Bike Bars (not clubmans because I don't have any plans for rear-sets yet, maybe next winter)
-OURY grips
-Stock seat from wnyoutlaw (easy rider seat not happenin’)

          I just realized earlier today that I’m missing the airbox lid and snorkel. I’m pretty sure my father in-law never had it to begin with. He got the bike from one of his old bosses in ’99. I have no idea if that is going to affect my jetting greatly or if it had been jetted to compensate for it in the past. I’ll just have to see how it runs when I get it started. I didn’t make this realization until after wnyoutlaw put the parts up for sale. I’m pretty sure someone has already called dibs on the snorkel.

         Well this is where I am at. It’s all the information I could think of, I just kinda got into the zone and wrote it all down. If anything maybe people will enjoy the story. I don’t have a crazy budget so this won’t be one of those crazy builds with amazing machining, fabrication, and hi-cost part pr0n. Just a guy trying to figure it all out and get his first bike on the road. I’ll try and upload pics right after this that hopefully go along with what I’ve mentioned.

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #1 on: February 12, 2014, 10:49:16 PM »
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Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #2 on: February 12, 2014, 10:56:05 PM »
Here are the pre-cleaning session pictures. This is basically how I received it.








































Offline WhyNot2

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Re: 1978 CB550K Project - First Bike.
« Reply #3 on: February 13, 2014, 08:00:35 AM »
I like watching builds of 550's.

Hope yours goes well.

One of my favorite bikes. Currently looking for one to build myself.

If it ain't raining, I'm riding.....~~{iii}?~~prost

If it sounds like I know what I'm talking about, it's because I cut and pasted from someone else.

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #4 on: February 13, 2014, 08:31:11 AM »
I like watching builds of 550's.

Hope yours goes well.

One of my favorite bikes. Currently looking for one to build myself.

Me too! Hopefully I can get everything running smooth before summer and do all of the powder coating/paint/polishing next winter (if you can call SoCal's winter, winter).

Offline SOHC4 Cafe Racer Fan

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Re: 1978 CB550K Project - First Bike.
« Reply #5 on: February 13, 2014, 09:12:44 AM »
The bike is in pretty fair shape.

A few more things to consider in getting the bike safer to ride. 
(1) replace the steering bearings with roller bearings (from All Balls)
(2) replace the swingarm bushings with new bronze bushings
(3) new fork tubes from Forking by Frank, locally through Race Tech (more $) or Cycle X
(4) steel braided brake lines from Slingshot (forum member)
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

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1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline cb

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Re: 1978 CB550K Project - First Bike.
« Reply #6 on: February 13, 2014, 02:45:43 PM »
Sounds like good advice.  How difficult is it for a first-timer to replace the steering bearings and swingarm bushings?

Offline apetersonboy

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Re: 1978 CB550K Project - First Bike.
« Reply #7 on: February 13, 2014, 02:48:49 PM »
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What's all the cord on top of your fender under your seat for? Are they jumper cables?

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #8 on: February 13, 2014, 03:40:23 PM »
The bike is in pretty fair shape.

A few more things to consider in getting the bike safer to ride. 
(1) replace the steering bearings with roller bearings (from All Balls)
(2) replace the swingarm bushings with new bronze bushings
(3) new fork tubes from Forking by Frank, locally through Race Tech (more $) or Cycle X
(4) steel braided brake lines from Slingshot (forum member)

Thanks for the suggestions! I hadn't even got around to thinking about that yet. Definitely something I need to put on my list.

I'll look into 1, 2, and 4. I might have a source for stock tubes for 3

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #9 on: February 13, 2014, 03:45:14 PM »
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What's all the cord on top of your fender under your seat for? Are they jumper cables?

I pulled it out and its a tube that has some sort of valve on one end that only allows air to flow one way. Its either used to add air to the tires or let it out. We never figured out what it's really used for, must have been in there a while. I'll see if I can get a better picture of it this weekend when I'm over there.

Offline apetersonboy

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Re: 1978 CB550K Project - First Bike.
« Reply #10 on: February 13, 2014, 08:26:23 PM »
Test Image



What's all the cord on top of your fender under your seat for? Are they jumper cables?

Interesting! Wonder if any one on the forum would know.

I pulled it out and its a tube that has some sort of valve on one end that only allows air to flow one way. Its either used to add air to the tires or let it out. We never figured out what it's really used for, must have been in there a while. I'll see if I can get a better picture of it this weekend when I'm over there.

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #11 on: February 13, 2014, 09:02:04 PM »
Received some new parts today.

Airbox Boots from Paul Gabor


And some fuel line and clamps from DCC

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #12 on: February 16, 2014, 05:45:04 PM »
Update time! *Out of beer.... cracks open a Dr. Pepper instead...* Remember that I am almost certainly ignorant about everything I am about to talk about.

I'll start with, the bike doesn't start. Part of me hoped it would be one of those stories of, "wow, I just cleaned the carbs and it kicked right up". That was not the case here. Lets go back to how I got there.

Here is what I did yesterday. I Installed the Airbox and Carbs with the new Airbox boots from Paul Gabor. If I had to do that with 30 year old boots, you would probably find me at the bottom of a river somewhere. Made sure the fit between the Filter and airbox was nice and tight. Installed the carbs using a method I saw on a thread here somewhere using a large clamp to get the rubbers back on the head. *curse words and an hour later* I changed the oil and filter, hooked up new fuel line and in-line filter from DCC from the tank to the carbs. By then my Father in law showed up and checked the old battery. It had some charge in it (somehow) so took it in, checked the levels and charged it up. He used some hi speed charger, got it to over 12v. He knows more than I do so I said go for it. I was just planning on kicking it anyways.

Pulled the spark plugs, they didn't look that bad at all. I cleaned em up and gapped them, put them back. The battery is now hooked up at this point, but when we put the key in and turn it, no idiot lights, headlight, nothing. Now for me, I have no idea if this battery is crap or not. He told me it's hold the charge over 12v so I'm thinking, even if its half dead, I should be getting some sort of light somewhere. So by this time it's too dark to go looking through all of the wiring.

First problem, I turn the fuel on, and my (I believe #2) carb overflows. Looks like I'm going to have to wrestle them off again and fix the float and/or valve. Anyways, I know the jets are clean and that there is gas in the bowls so I just turn the fuel off, clean the spilled gas up and we think we should at least get something. I give it a few kicks, he gives it a few kicks. Does not sound like its doing anything at all. We can't hear anything that sounds like its getting spark. So we pull the point cover and we see that one of the points isn't really moving. So I decide to pack it up for the night, do some research at home, and tackle the points in the morning.

Today, I read up on cleaning and setting the points. I go buy a point file, clean em up, set them to the gap stated in the Clymer manual. I turn the crank and the points are now going back and forth. Give it a few kicks, still sounds the same, nothing really going on. I decide to start looking into whats going on with the idiot lights not turning on. I find the fuse box, and wow, there is this short fuse in there barely touching the other side, one has melted the plastic around the ends of it, and I'm like crap. I really don't know what to do when it comes to electrical work in cars or bikes. Like, I can check if a fuse is blown and know to replace it with the right fuse, but that's about it. So I decide to just take a lot of pictures (I know everyone wants pictures) and see what I can find out. It looks as though the ends of a few of the fuses holders have lost their solder and are most likely not connecting to anything in the box.

Now there are so many things I don't know but this is what is going on in my head right now. Are these fuses only for lights or is this what's keeping it from starting? Are they even needed to start the engine using the kickstarter?

Next, I'm going to need to learn how check the coils to see if they are any good. I know those are definitely needed for it to run. Now, I still don't really know how they work (yet) but I just know those are needed to get spark to the plugs.

Next I'm thinking, well if the idiot lights don't turn on, does the bike know that the key is turned on and that the killswitch is on? If not, and these fuses are making it seem as though there is no key, and the killswitch is off, then that could be the cause.

I'm definitely going to search the forum, my manual, and the Honda manual for any helpful information but right now I'm kinda stumped as for what I should be searching for. Is it fuses, coils, ground, points, or everything? I'll also be looking up how to read the wiring diagram without going cross-eyed and learning how to test all of these different parts in the not running state that it's in.

Any Help is greatly appreciated. Trying to keep my motivation after running into electrical problems.

I will post pics after this post of everything I thought might be relevant.

--Paul

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #13 on: February 16, 2014, 05:59:20 PM »
I hope this isn't too many pictures  :-\







Hard to see the writing on the short stubby one. Looks like 15A to me.




























After I took the fuse box off















Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #14 on: February 16, 2014, 06:11:11 PM »
Cleaned the pipes up a bit. Here are some other pictures I took after getting the carbs and airbox back in.






















Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #15 on: February 16, 2014, 09:48:03 PM »
Well Obviously the fuse box will need to be replaced. Should I go with a Hondaman box? Does anyone know if he's still making them?

Offline redrider736

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Re: 1978 CB550K Project - First Bike.
« Reply #16 on: February 17, 2014, 03:13:48 AM »
Just bought a hondaman fuse box for my 78 550k.  Great quality, drop him a email

Sent from my GT-P5113 using Tapatalk

78' CB550k (Not Run'n / Basket Case Project)
77/78 cool 2 member #269

Online calj737

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Re: 1978 CB550K Project - First Bike.
« Reply #17 on: February 17, 2014, 04:36:28 AM »
Yes, replace your fuse box with a Hondaman unit. And to answer your question, the main fuse MUST be good for the bike to start. Until that box is repaired or replaced, you won't get anywhere.

'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #18 on: February 17, 2014, 08:32:02 AM »
Thanks for the replies Cal and Red! I'll send him a PM.

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #19 on: February 20, 2014, 01:01:55 PM »
Fuse box from Hondaman - Ordered
New Superbike Bars - Received
Stock seat from wnyoutlaw - Received
Stock forks and Filter Lid/Snorkel from wnyoutlaw - Shipped

I'll order new tapered bearings and fork seals from allballs when I'm ready to swap the stock forks in.

While I wait for the fuse box, most of what I do this weekend will be cosmetic. More scrubbing. Trying to clean all of the crap out of those fins. Are there any dremel brushes that are safe to use on the engine that I can pick up at HF or am I just going to have to wait until I can soda blast it sometime next winter? Can't cover the in-laws driveway with baking soda lol.

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #20 on: February 20, 2014, 02:36:29 PM »
Seat from wnyoutlaw



New Bars


Offline wnyoutlaw

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Re: 1978 CB550K Project - First Bike.
« Reply #21 on: February 20, 2014, 02:59:51 PM »
Nice bars, where did you get them? I want to put them on my bike too.
1977 CB550F Supersport
1978 CB550K
2010 YZ450F flat tracker
2008 YZ450F flat tracker
2004 YZ250F flat tracker

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #22 on: February 20, 2014, 03:04:58 PM »
Nice bars, where did you get them? I want to put them on my bike too.

Hey Jack,

Just cheap 'ol Bikemaster bars. Found them on amazon for $22.45 with free shipping. The seller was Motorcycle Accessories.

Online calj737

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Re: 1978 CB550K Project - First Bike.
« Reply #23 on: February 21, 2014, 06:04:00 AM »
You can use ScothBrite pads on your Dremel, by hand or as attachments for a Drill/Driver. They come in a variety of sizes and grits, and make pretty good work on debris and grime. Some good quality degreaser added produces nice results.

One caveat, if you bear down to hard, you'll scratch the cases up. If you're painting or powder coating the cases, this is fine as it adds some "tooth" for the paint to bond to. But if you're leaving the engine unfinished, be aware of sanding marks.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline pauldperrin

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Re: 1978 CB550K Project - First Bike.
« Reply #24 on: February 21, 2014, 11:34:51 AM »
You can use ScothBrite pads on your Dremel, by hand or as attachments for a Drill/Driver. They come in a variety of sizes and grits, and make pretty good work on debris and grime. Some good quality degreaser added produces nice results.

One caveat, if you bear down to hard, you'll scratch the cases up. If you're painting or powder coating the cases, this is fine as it adds some "tooth" for the paint to bond to. But if you're leaving the engine unfinished, be aware of sanding marks.

Sweet, thanks for the info Cal.

It will most likely be unfinished until next winter so I'll be sure not to apply too much pressure.