Author Topic: Newbie with '73 CB500  (Read 1112 times)

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Offline Whizwaz

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Newbie with '73 CB500
« on: May 23, 2011, 12:27:50 PM »
Howdy! Just got signed up and thought I would introduce myself.
My buddy just handed off a 1973 CB500/4 to me to take care of. It was a one-owner, then handed off to him a few years back. He has gotten tired of wrenching bikes, so now it's my turn.
Last ran/plated in 1986, with 18,000 on the clock. It was put to pasture due to a wiring issue. The harness under the tank is not very pretty.
There is a wonderful substance in the tank, partly 24-year-old gasoline and rust. If someone needs a science project...
The carburetors need to come off. I know the enrichener is stuck, and the slides may be too, or it's the cables. Something requires some attention.
It does turn over, and the transmission appears to shift out ok. It is missing some minor items, but they should be easy to come by.
I reworked a 1982 Yamaha Vision a couple years back, so I think this should be a fun project. There are a lot more resources for these old Hondas than the Yamaha had, that's for sure.
For a freebie, I feel like I have a great start. Maybe in a couple years I'll have a great machine to attend vintage rides and shows with!  --  John

Offline hoodellyhoo

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Re: Newbie with '73 CB500
« Reply #1 on: May 24, 2011, 05:39:57 PM »
Welcome. That's a very nice project you have there. I always liked the look of the 500's.
1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

Offline Whizwaz

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Re: Newbie with '73 CB500
« Reply #2 on: May 24, 2011, 07:11:51 PM »
Thanks for the welcome!
I was impressed it was as complete as it was. It's only missing the headlight and front turn signals, only because it had a fairing at one time. I even have the shop manual and original owners manual.
The carbs were removed today. Well, those pieces of metal that LOOK like carbs. All four are stuck, so I'm going to try the vinegar trick first, but I have official carb cleaner and am prepared for the overhaul.
The first goal is to get it running. From there, it needs attention everywhere. Front brake master is dry and stuck, forks leak and rear shocks are springs:no dampening.
So many fun projects to save it. Hate to see such a nice bike just sit and deteriorate, and so many pieces are still available.
So much information here that it should be easy to find what I need to get it up and running.  -- John

Offline Greggo

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Re: Newbie with '73 CB500
« Reply #3 on: May 24, 2011, 09:37:38 PM »
First off, Welcome to the GREATEST FORUM EVER!

Here's a link I suggest any new 500/4 owner check out: http://forums.sohc4.net/index.php?topic=14273.0

That's a fine looking 500 you got for free!  Enjoy the resurrection!

A suggestion before starting her up for the first time...with the key on, and the kill switch in kill mode, turn the starter over until the oil light goes off.  That way you know pressure is building up to your top end.

Offline Whizwaz

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Re: Newbie with '73 CB500
« Reply #4 on: May 25, 2011, 11:26:45 AM »
Since I need to clean the carbs I am going to do a comparison of Berryman's, Pine-Sol, Simple Green and Vinegar on the float bowls and see what works best. I used to test things like this in a previous life. Whatever works best will be used for the full cleaning. I do want to pick up some Seafoam Deep Creep too.
After draining/replacing the oil, I figured I would crank it a few times to get oil up into the top end since it has been sitting for so long. Good tip to use the oil light as an indicator there is pressure! Hopefully my oil light works. :) I'll probably use the new oil/filter for a few hundred miles, since who knows what is going to break loose and end up in the oil. Best to use it a short time to collect gunk, them swap it out. Oil is not all that expensive, and an oil change is easier than a rebuild.
Also, thanks for the link. I'll bookmark it and read it over to check things out before taking it out of the garage. One more item to add to the ever-growing list of things to take care of.
When I picked it up, my buddy was excited he knew where there was an aftermarket headlight I could pick up. I think that is a long ways off and pretty low on the list right now. Besides, I prefer to track down an original. (The option of a cafe bike did cross my mind, but this is so complete it's a shame to let it get converted. Maybe the next bike. ;) )
Now all I need is to come up with a name.

Offline Greggo

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Re: Newbie with '73 CB500
« Reply #5 on: May 25, 2011, 11:41:20 AM »
Glad to hear you're not cafe'ing her.  Not that there's anything wrong with that, but that's a nice bike to start with.  I personally prefer to see junkers turned into cafe's, not survivor type bikes.

Might be a good time to start a build thread?  Take pictures! Have Fun!

Offline mjstone

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Re: Newbie with '73 CB500
« Reply #6 on: May 25, 2011, 04:02:50 PM »
Welcome to the Forum, Whizwaz!  Nice find!  Mine was free too (my father-in-law gave it to me).  I'm glad to hear that your not going to Cafe it, way to nice a bike for that.  I converted my 500 to dual disks, so I replaced my master cylinder with one from a GL1000.  If you need my old master cylinder let me know.

MJ
1972 CB500Four (Honda)
1973 CB500Four (Oliver)

Offline Whizwaz

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Re: Newbie with '73 CB500
« Reply #7 on: May 26, 2011, 06:46:58 AM »
MJ: Thanks for the offer for the front brake master. I may have to take you up on that, once I determine how bad mine is and if it can be rebuilt. I plan on keeping her as stock as possible, so no dual disk conversion here.
I have two newer bikes that I ride regularly, so it's going to be a slow build. I'll start a build thread once I begin the carb cleaning. I'll try for lots of photos, mainly so I have a reference how it goes back together.
Still deciding on what to do with the frame. It is in good shape, but it really should be cleaned and painted. Once I have it running I plan on making an outline as to what needs to happen before it is road-ready. I'm not detailed enough for a full-on restore, but I do want it reliable so I can attend rides and enjoy it.  --  John

Offline hoodellyhoo

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Re: Newbie with '73 CB500
« Reply #8 on: May 27, 2011, 07:15:15 PM »
If I recall you want to avoid using vinegar on the carbs. Something about the acid eating away the aluminum of the carbs. Stick with carb cleaners and degreasers.
1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

Offline KCbarsos

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Re: Newbie with '73 CB500
« Reply #9 on: May 28, 2011, 12:50:42 AM »
welcome buddy, love the paint. brown looks so good on these bikes (and only completely bias).