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Author Topic: Frame Numbers  (Read 748 times)

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Offline Stavrouchris

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Frame Numbers
« on: July 28, 2021, 11:47:15 AM »
Hi everyone. Thank you for having me on your forums.
I have recently bought a CB750 K2. I am so happy. Needs a little work but should be running soon.

My question to you all is:
On the frame there are two set of numbers
CB750-2019806
W600097482W
Stamped next to each other (see photo).

Has anyone see this before? And does anyone know why this would be??
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Offline bryanj

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Re: Frame Numbers
« Reply #1 on: July 28, 2021, 12:45:23 PM »
The w number aint Honda
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Offline TwoTired

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Re: Frame Numbers
« Reply #2 on: July 28, 2021, 01:01:45 PM »
What country is it registered in?
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline Stavrouchris

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Re: Frame Numbers
« Reply #3 on: July 28, 2021, 01:13:59 PM »
It is registered in Italy
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Offline Stev-o

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Re: Frame Numbers
« Reply #4 on: July 28, 2021, 01:33:01 PM »
Welcome from Texas. 

It is quite possible that the bike was stamped with the additional numbers as part of registration or titling system. As bryan stated, it was not done by Honda.
Do you have any paperwork that has that number on it?
If no, I would not be concerned with it.
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Stavrouchris

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Re: Frame Numbers
« Reply #5 on: July 29, 2021, 06:49:35 AM »
That's the problem. The Registration paperwork has only the 'W600097482W' number on it.
Since I have exported it out of Italy the authorities here are asking me to explain why there are two numbers.
I'm trying to find out what this number could be otherwise I might not be able to ride it on the road again ever!
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Offline TwoTired

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Re: Frame Numbers
« Reply #6 on: July 29, 2021, 07:27:27 AM »
Big government bureaucrats make life sooo much easier….
Let’s get more of that!

  :-\   :-X
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline PeWe

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Re: Frame Numbers
« Reply #7 on: July 29, 2021, 08:28:59 AM »
Frame look very shiny.
Is it a modified bike by another company making race bikes or similar?
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CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Stavrouchris

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Re: Frame Numbers
« Reply #8 on: July 29, 2021, 09:09:12 AM »
I think the frame got re-sprayed but everything on it is original.
The CB750-2019806 agrees well with a K2 but what on earth is that other number??
Who put it there and why?
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Offline Stev-o

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Re: Frame Numbers
« Reply #9 on: July 29, 2021, 09:31:29 AM »
Quote from: Stavrouchris on July 29, 2021, 09:09:12 AM
I think the frame got re-sprayed but everything on it is original.
The CB750-2019806 agrees well with a K2 but what on earth is that other number??
Who put it there and why?

Do you ask the seller?????
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Stavrouchris

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Re: Frame Numbers
« Reply #10 on: July 29, 2021, 09:41:37 AM »
Yes, and he doesn't know
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Offline Don R

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Re: Frame Numbers
« Reply #11 on: July 29, 2021, 09:52:34 AM »
  I would say, That was a number assigned by Italy DMV at the time of new registration.
  It's my story and I'm sticking to it, tell them I said so.
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Offline 71 V12

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Re: Frame Numbers
« Reply #12 on: July 29, 2021, 10:35:47 AM »
Which country are you located?

Is there a vintage motorcycle (ideally Honda) that can verify the Honda stamping that would be accepted by the licensing authorities?
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Offline Kevnz

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Re: Frame Numbers
« Reply #13 on: July 29, 2021, 03:14:53 PM »
If all else fails, any chance you can conceal the unwanted number? Strip the area back to metal and have it lead filled or brazed, smooth off and respray that part of the frame. What country are you in? Perhaps contact a Vintage Car Club and see if they know the correct procedure to follow. Their members , no doubt, import cars all the time and will know what's required. Some countries have a separate stamped tag rivetted which usually has no direct relationship to the factory stamp; clearly Italy stamped the frame directly. In my country (NZ), the compliancing authority had to inspect my bike and gave me a document stating the number had not been tampered with. Now the vehicle has to be confirmed correct by the Vintage Car Club. Painful.
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