Honda-SOHC

SOHC.co.uk Forums => CB750 => Topic started by: stoutgoose on December 12, 2019, 10:05:54 AM

Title: Frame numbers
Post by: stoutgoose on December 12, 2019, 10:05:54 AM
Morning all. Is there a definitive list of F2 frame numbers and production dates? I cannot find any link that works.

I am trying to work out the production date of my F2 which was registered in December 1979, but seems to have an earlier frame number; CB750G1013379.

Any assistance and direction welcome.
Title: Re: Frame numbers
Post by: blackeagles on December 12, 2019, 12:05:04 PM
mines has a date on the frame label
Title: Re: Frame numbers
Post by: Nurse Julie on December 12, 2019, 12:07:08 PM
If its a USA import it will have the date on the VIN plate. If its a 1st registered UK bike... it won't have the date on the VIN plate. Not sure but I don't think any European models have date on VIN plate.
Title: Re: Frame numbers
Post by: blackeagles on December 12, 2019, 12:29:07 PM
you might also want to look at:

https://www.motorcyclespareparts.eu/en/honda-parts/honda-model-prefix

it gives a rough idea of the letter after the cb750 bit.
Title: Re: Frame numbers
Post by: blackeagles on December 12, 2019, 12:35:12 PM
If its a USA import it will have the date on the VIN plate. If its a 1st registered UK bike... it won't have the date on the VIN plate. Not sure but I don't think any European models have date on VIN plate.

I was looking at the 'pva' number on the label.  it may be a coincidence but mine is a 77 (reg78) and the number starts 77 - not thsat I know whet the 'pva' number is supposed to denote!!
Title: Re: Frame numbers
Post by: Nurse Julie on December 12, 2019, 12:36:51 PM
Just thing out loud... Is yours (stoutgoose) a single overhead cam or a double overhead cam?
Title: Re: Frame numbers
Post by: Nurse Julie on December 12, 2019, 12:40:37 PM
If its a USA import it will have the date on the VIN plate. If its a 1st registered UK bike... it won't have the date on the VIN plate. Not sure but I don't think any European models have date on VIN plate.

I was looking at the 'pva' number on the label.  it may be a coincidence but mine is a 77 (reg78) and the number starts 77 - not thsat I know whet the 'pva' number is supposed to denote!!
No idea either but if it is the date of manufacture, it actually says 'date of manufacture' or similar and would be something like 10/77 being Oct 77 for example.
Like so, as an example, USA VIN plate

[attachimg=1]
Title: Re: Frame numbers
Post by: Moorey on December 12, 2019, 02:20:34 PM
I would have thought it was one of the last actually built sometime 78 a F3 a term not often used as they were always just referred  to as F2.  Cb750g numbers were used on non USA frames. No doubt sold cheap in the day to clear as the dohc was also out at that time.
To the best of my belief. I could well be wrong.
Title: Re: Frame numbers
Post by: blackeagles on December 13, 2019, 12:33:36 PM
If its a USA import it will have the date on the VIN plate. If its a 1st registered UK bike... it won't have the date on the VIN plate. Not sure but I don't think any European models have date on VIN plate.

I was looking at the 'pva' number on the label.  it may be a coincidence but mine is a 77 (reg78) and the number starts 77 - not thsat I know whet the 'pva' number is supposed to denote!!
No idea either but if it is the date of manufacture, it actually says 'date of manufacture' or similar and would be something like 10/77 being Oct 77 for example.


ok, in that case I defo do not have a date on it, just the frame number/cc/weight and a pva number.
Title: Re: Frame numbers
Post by: Nurse Julie on December 13, 2019, 04:04:20 PM
If its a USA import it will have the date on the VIN plate. If its a 1st registered UK bike... it won't have the date on the VIN plate. Not sure but I don't think any European models have date on VIN plate.

I was looking at the 'pva' number on the label.  it may be a coincidence but mine is a 77 (reg78) and the number starts 77 - not thsat I know whet the 'pva' number is supposed to denote!!
No idea either but if it is the date of manufacture, it actually says 'date of manufacture' or similar and would be something like 10/77 being Oct 77 for example.


ok, in that case I defo do not have a date on it, just the frame number/cc/weight and a pva number.
Well, I wonder what PVA is 🤔🤔🤔I have just looked at one of my bikes, the 400/4 and that has a PVA No. on the VIN tag of 65.228 That rules out it being anything to do with date of manufacture as mine was one of the last ever manufactured and is a 1977. I wonder if it is some reference to type approval or homologation compliance for the UK market?
Title: Re: Frame numbers
Post by: stoutgoose on December 13, 2019, 05:51:57 PM
Just thing out loud... Is yours (stoutgoose) a single overhead cam or a double overhead cam?

It’s a SOHC but no frame label on the head tube,  just the stamped VIN. From looking around, it seems to have a lower frame number than some bikes on ‘T’ plates.
Title: Re: Frame numbers
Post by: Nurse Julie on December 13, 2019, 06:09:05 PM
Just thing out loud... Is yours (stoutgoose) a single overhead cam or a double overhead cam?

It’s a SOHC but no frame label on the head tube,  just the stamped VIN. From looking around, it seems to have a lower frame number than some bikes on ‘T’ plates.
So it may just be a case of that bike being in stock in a dealership unsold for a long time and then registered. Not unusual, as Moorey explained, to have one of these models in stock, unsold, then sold at a give away price and late registered. That's if its a 1st registered UK bike obviously, if it was sold in mainland Europe it could be for another reason I suppose.
Title: Re: Frame numbers
Post by: Moorey on December 13, 2019, 07:56:06 PM
Not a million miles away Frame no. CB750G 1010741

https://www.bonhams.com/auctions/23600/lot/425/ and they say they were manufactured 78/79. When everywhere else it goes.

75 750f
76 750f1
77 750f2
78 750f3
Title: Re: Frame numbers
Post by: Nurse Julie on December 13, 2019, 08:08:21 PM
Not a million miles away Frame no. CB750G 1010741

https://www.bonhams.com/auctions/23600/lot/425/ and they say they were manufactured 78/79. When everywhere else it goes.

75 750f
76 750f1
77 750f2
78 750f3
That's interesting Chris as that's a mainland European bike, the Netherlands 🤔
Title: Re: Frame numbers
Post by: Moorey on December 13, 2019, 08:19:05 PM
Not a million miles away Frame no. CB750G 1010741

https://www.bonhams.com/auctions/23600/lot/425/ and they say they were manufactured 78/79. When everywhere else it goes.

75 750f
76 750f1
77 750f2
78 750f3
That's interesting Chris as that's a mainland European bike, the Netherlands 🤔

I had read somewhere that the g was used on non USA. It could come from mainland Europe I suppose it would depend on the rest of its specs, but I do know they did struggle to clear the last ones as they were just too long in the tooth back then everybody want dohc.
Title: Re: Frame numbers
Post by: blackeagles on December 14, 2019, 10:58:23 AM
I read somewhere (maybe on this site! - but may have been a usa site)  that the 'g' was also included for bikes in the uk (which I suppose you could, at a stretch, say are European market) but I also read that they start with a '2' frame number whereas mine also starts with a '1' - cb750g-100**** with both 'first reg' and 'first reg in the uk' as the same date (03/78) so must be a uk bike. 

I have to say there is a lot of contradictory info out there.
Title: Re: Frame numbers
Post by: Moorey on December 14, 2019, 02:15:55 PM
I have to say there is a lot of contradictory info out there.

Its the internet what else can you expect.  ;)
SimplePortal 2.3.5 © 2008-2012, SimplePortal