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1980 CB750 C F or K?

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1980 CB750 C F or K?

DaveB
I just bought a 1980 CB 750. How do I tell if it is a C, F or K? Thanks.
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Re: 1980 CB750 C F or K?

irishcafe07
the first letter after "CB750" of the serial number should give it away
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Re: 1980 CB750 C F or K?

LukeM
Administrator
If you could post the frame number, I can check my Haynes manual and get an answer for you.

Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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Re: 1980 CB750 C F or K?

DaveB
RC012212866   I found this number on the fork neck. I checked the bike title and this is also the serial number listed on it.
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Re: 1980 CB750 C F or K?

LukeM
Administrator
From page 160 of the DOHC CB750 Haynes manual:

You have a 1980 US model CB750 C (Custom), built between October 1979 and October 1980.
Engine IDs for those bikes range from
RC01E-2109040 to RC01E-2136728.

Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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Re: 1980 CB750 C F or K?

DaveB
Thanks for the help
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Re: 1980 CB750 C F or K?

LukeM
Administrator
You're welcome. I'm glad I kept the Haynes manual. I sold the old bike a while back.

 Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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Re: 1980 CB750 C F or K?

sleepyfu
Hi, all. my 1st post here. per the usual noob, I have a question.
I read the wiki on cb750 and looked thru a bunch of pix on google img search, but still don't know the difference between the C/F/K.
Will be going to check out a 1980 CB750K for sale, is there something I need to watch out for? thanks.
and sorry for the thread jack, but my Q was pretty much the same as yours/
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Re: 1980 CB750 C F or K?

sgtslag
The "K" model is an All Purpose Japanese Bike (APJB):  it can be adapted to any style of riding on the roads.  The "C" model is geared lower, providing more torque, and better low-end response, but it gets worse mileage on the highway.  The "F" is a sportier model, as far as I know.

Mine is a 1979 CB750K -- love it!  My Dad has a 1981 "C".  Not a bad bike, but the gearing is not to my taste, as I like to tour.  His tends to be quite loud on the highway, compared to mine, also, but I don't know what his OEM exhaust looks like inside -- it may be rusted out and mostly hollow.

The "K" model is rock solid, dependable, and it usually gets in the low to mid-40's for mileage (miles, not kilometers).  My wife and I toured around Lake Superior on our '79, back in 2009.  Rode through four days of rain, in Canada.  Never had a problem with the bike -- an incredible trip!  Bike still runs like a champion.  Progressive suspension is one of the best upgrades you can make on these -- mine now rides like a modern bike...  Ohhh, smooth and comfy!

Things to look for?  Make sure it starts well, check the color of the exhaust (blue smoke -- walk away...).  Check to make sure it hasn't been heavily modified, or if it has, make sure it was done well, and not a hack job.  Check the age on the tires:  if more than three years old, they need to be replaced due to potential dry rot (Pirelli MT66 Route tires are superb, and the only thing I run my bikes on, period; excellent wet traction -- tested in Canada...).  Cheers!
1979 CB750K (sold, 2012, but not forgotten)
1983 Kawasaki 440 LTD Belt Drive (sold, 2011)
1993 Kawasaki Voyager XII
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Re: 1980 CB750 C F or K?

Retcol
In reply to this post by LukeM
Luke, would you mind looking up my frame number? RC01-2107328. I believe it to be a 1980 K model. Thanks much.
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Re: 1980 CB750 C F or K?

LukeM
Administrator
I'll have to dig up the manual from the garage. Update to follow.

Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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Re: 1980 CB750 C F or K?

LukeM
Administrator
In reply to this post by Retcol
According to the Haynes manual:

1980 US CB750K

Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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RE: 1980 CB750 C F or K?

Retcol

Thanks Luke, I appreciate your taking the time to look it up.

 

From: LukeM [via Honda CB750'S] [mailto:[hidden email]]
Sent: Wednesday, December 28, 2011 6:52 PM
To: Retcol
Subject: Re: 1980 CB750 C F or K?

 

According to the Haynes manual:

1980 US CB750K

Luke M

Back on 2 wheels after a 30+ year break. Used to have a 1979 CB750L, sold it as a parts bike, now riding a 1984 VT700C. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.

 


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RE: 1980 CB750 C F or K?

fighterDaz
Hi, I wonder if you can check out my serial number, RC01-2014051, I purchased it as a K, but now Im not sure. Thanks guys. fD. England.
Youth is wasted on the young.
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RE: 1980 CB750 C F or K?

fighterDaz
Any one know answer to my frame number question?
Youth is wasted on the young.
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RE: 1980 CB750 C F or K?

LukeM
Administrator
As soon as I get back home, I will look this up and reply. Busy week this week: stuff blowing up all over the place.  Remind me never to take a week off of work again.

Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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Re: 1980 CB750 C F or K?

Piute
In reply to this post by DaveB
                                       This may help till Luke
     From;   http://www.z1enterprises.com/bike-list-honda.aspx
1980 Honda CB750C
- Frame: RC01-2200004
- Engine: RC01E-2109040  [more]
1980 Honda CB750F
- Frame: RC04-2100003
- Engine: RC04E-2100003  [more]
1980 Honda CB750K
- Frame: RC01-2100005
- Engine: RC01E-2100005
                                        Should keep ya busy till then

                            1977 CB750 F2 Super Sport
<LET THOSE WHO RIDE DECIDE><RIDE TO LIVE-LIVE FOR JESUS> 
Native American from central Cal,  Kickstand UP in S.W.Missouri,
                                       
 
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Re: 1980 CB750 C F or K?

fighterDaz
Oh crap, my frame and registration number dont match...Reg is a 1982, frame is 1980.. I will keep you guys informed, I will wait to see what DVLA (our national licencing agency) have to say...I may be in the crap here boys..I purchased this bike with no registration document..Doh
Youth is wasted on the young.
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Re: 1980 CB750 C F or K?

TOOLS1
Administrator
Hey, you might own a really nice bike somewhere.
I hope, you do not have a hard time straightening this out.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"

1976 CB 750-A X 2
1977 CB 750-A X 2
1977 CB 750-K X 2
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: 1980 CB750 C F or K?

fighterDaz
Cheers tools, we will see what happens...!!
Youth is wasted on the young.
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