Author Topic: What model of cb500  (Read 4905 times)

Offline Mozza

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What model of cb500
« on: March 01, 2011, 04:06:14 PM »
I have just bought a cb500 four as my first project bike and need to know the actual model I have. The bike has an engine number that starts with CB500E 10 which is k0 according to this site but the frame starts with CB500 20 which is k1 is this normal or do I have an engine from a different bike in my frame?

I posted this over on sohc4.net before realising there was a uk only forum. They reckon that it's normal for these bikes to have mismatched engines and frames and I shouldn't worry. Is this something anyone else has encountered? I dont have any history on the bike as the PO says it's a barn find so any insight would be greatly appreciated.

Offline SteveD CB500K0

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Re: What model of cb500
« Reply #1 on: March 01, 2011, 05:34:48 PM »
Mine's the other way around. 1015277 frame with a 2154987 engine.

I don't think it makes much difference really as there were very few changes in the short life of this model. The 550 had all the "upgrades"  :)
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Offline SteveD CB500K0

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Re: What model of cb500
« Reply #2 on: March 01, 2011, 05:35:33 PM »
Welcome to the UK by the way. Smaller (but more perfectly formed) than our colonial brothers.
2020 Tiger 900 GT Pro
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Offline Mozza

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Re: What model of cb500
« Reply #3 on: March 01, 2011, 06:17:20 PM »
Cool thanks for clearing that up was just worried that when it comes to getting it put back on the road I might have some problems.

Offline Oddjob

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Re: What model of cb500
« Reply #4 on: June 28, 2011, 11:06:27 PM »
Odd, Honda tended to keep the engine and frame numbers very close together if not identical. I've never seen a mixed model bike unless the owner had changed one or the other.
Biggest difference between the K0 and K1 was the seat lock, the K0 got a lock very similar to the Honda C50 steering lock, colours were different as well, K0 came in Starlight Gold and the K1 came in Candy Gold Custom. There was also a slight difference in switchgear IIRC. Very few K0s were imported to the UK, the K1s were by far the more numerous. K2s as far as I know was never imported to the UK.
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Offline Bryanj

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Re: What model of cb500
« Reply #5 on: June 29, 2011, 07:14:39 AM »
Somebody has swapped the engine at some time. Do the numbers match the V5?

Offline Mozza

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Re: What model of cb500
« Reply #6 on: July 22, 2011, 11:48:28 PM »
The numbers march the ones in the v5 but it doesn't tell you the exact model- the v5 also states the colour is green but it did have the gold almost metalflake looking paint under it before I took it back to bare metal.

Offline Oddjob

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Re: What model of cb500
« Reply #7 on: July 24, 2011, 12:07:26 AM »
My initial thoughts are that it's a K0. The reg number might help as this would tell us the year of the bike, K1's started appearing around end of 71/72 but the intial bikes were imported for press reviews and there were 3 K0s imported for this. IIRC there was a black, brown and starlight gold bikes imported. My sources when I was down at Honda doing a training course told me only 3 K0s were imported to the UK and they were all just for press to ride. It sounds like you may just have one of those. It's extremely unlikely that you have a K1 with a K0 motor as unless the engine was imported at sometime there wouldn't really be any K0 engines in the UK. Most likely the bike was crashed whilst on press test and a new frame was fitted, as these would have been a UK import the frames would have been numbered from 20.

That's my theory anyway, as said the V5 should have date of first registration and that should be late 70 early 71 if it's a K0
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Offline Bryanj

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Re: What model of cb500
« Reply #8 on: July 24, 2011, 07:57:46 AM »
New frames come unumbered and have the original re-stamped into them, frame numbers starting 10 ran untill 11/71 then the 20 started in 12/71.

Is this declared as an initial used overseas model I.E. an "Import" on the V5 as it's very common to find a US model with a later engine.

As long as all the numbers tally with the V5 just enjoy it, there are very few modifications during the run of 500 engines(mostly in the first 6 months) and frames so parts will not be a problem unless you are extremely unlucky

Offline popwud

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Re: What model of cb500
« Reply #9 on: August 25, 2011, 07:59:15 PM »
My Nreg has engine number 2159..... and frame number 2070.....

Offline Honda Brat

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Re: What model of cb500
« Reply #10 on: August 27, 2011, 10:27:11 AM »
not too sure on mine as the engine stamp has the last 3-4 digits missing, I can partially make them out  :(

hey Popwud, you wouldn't happen to be the same guy that was on the 1400.org?
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Offline popwud

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Re: What model of cb500
« Reply #11 on: August 27, 2011, 11:00:45 AM »
Yea HB how ya doin, used to be on there, still going strong with my 14.

Offline Honda Brat

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Re: What model of cb500
« Reply #12 on: August 27, 2011, 11:07:01 AM »
all good thanks mate, I thought it maybe you.  Been a few years now without my 14, still miss her though  :'(  Mind you once I have finished my cb500/4 build there is always room for another as long as I don't build something else in the meantime  ;D cheers (KDC)
Custom bike builder, restorer, customizer.  Love bikes of all shapes and sizes BUT NO SCOOTERS!

 

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