Author Topic: I am thinking about purchasing this 1976 CB750F but.... (Read 2574 times)

rocs · « **on:** January 20, 2015, 07:08:43 PM »

I don't know anything about them. I am a CB550 guy but have been wanting to get a CB750. Ideally I would want a K model because I like the styling better but I came across this F..

I haven't gone to see it yet but wanted everyones take on this particular bike. I have no problem waiting for a K to come by and passing on this. Dual disk brakes does interest me however.

All I know is that its a 1976 CB750F because thats what the guy told me. I did some slight research and some 1976's come in an F or F1. Can anyone elaborate on what that means?

Heres a pic as well.

seanbarney41 · « **Reply #1 on:** January 20, 2015, 07:16:19 PM »

that has F1 bodywork/paint and f2/3 frontend can't tell much else from the very bad pic. The f0/1/2/3/ thing is just the model/year just like the k's and other Honda's of the era. f0 came out in '75, f1='76, f2=77' roughly etc. Yeah, most classic bike guys consider the f's kinda fugly. Performance guys see them as a hopped up K.

goldarrow · « **Reply #2 on:** January 20, 2015, 10:23:52 PM »

I buy bikes just to get alloy wheels

Those white rims are something.

martin99 · « **Reply #3 on:** January 21, 2015, 12:09:12 AM »

Left-hand footrest hanger appears to be cast ally? Black engine? Crap pic, but I'm guessing 77/78 F2/F3.

Better pictures/ engine & frame numbers would help.

Jerry Rxman Griffin aka MuthaF'er · « **Reply #4 on:** January 21, 2015, 12:25:29 AM »

Whatever the hell it is it is NOT a stock F. Mishmash F perhaps.

A better picture would be good.

1975 F 1/75 - 4/7/75
F1 right after the F into 1976

Wobbly · « **Reply #5 on:** January 21, 2015, 01:06:38 AM »

There is nothing wrong with a clean F Honda, but this one is pieced together, and probably out of necessity. Wait for the K Model you really want. The F1 (plus F0 in the US) model has no performance advantage over the K models. Only the F2 (and F3 in the US) can boast to have 5 more horsepower than the K-models. If you want the classic look of the K model with its spoke-wire wheels, don't bother with this one.

seanbarney41 · « **Reply #6 on:** January 21, 2015, 03:08:18 AM »

Quote from: goldarrow on January 20, 2015, 10:23:52 PM

I buy bikes just to get alloy wheels

Those white rims are something.

good catch, I just glanced at that and assumed it to be a Comstar...looks like a Hayashi

jaguar · « **Reply #7 on:** January 21, 2015, 05:34:15 AM »

That front wheel might have some value.
Any better pictures?

rocs · « **Reply #8 on:** January 21, 2015, 05:45:29 AM »

Thanks for the info guys. Sorry for the crappy picture. I guess the seller doesn't have that great of a camera.

Here are a couple more

Wobbly · « **Reply #9 on:** January 21, 2015, 06:59:44 AM »

Aside from the black-painted engine and the frontend, both pointing into the F2/F3 direction, it looks like an original F0/F1, incl. the carbs. The newer F model should also have an oil-filter base unlike the K-models or F1. The engine number would be better than my guess, however. I am clueless about the wheels.

rocs · « **Reply #10 on:** January 21, 2015, 07:23:22 AM »

Thanks for your insight Wobbly.

I am going to look at the bike tonight. Hopefully it is something that can be put back together. It comes with a spare set of wheels as well. I will update everyone once I see it.

If they are Hayashi's, how much can I expect to get for them? They don't appear to be my style of choice but that may change once I see them in person.

Wobbly · « **Reply #11 on:** January 21, 2015, 07:28:31 AM »

Check wheels against these: http://forums.sohc4.net/index.php?topic=38004.0

rocs · « **Reply #12 on:** January 21, 2015, 07:32:36 AM »

Thanks, I actually saw that thread earlier when doing some minor research. The fact that this CB750F has rear disk brakes lead me to believe I may have a set of Hayashi's. Fingers crossed...

Wobbly · « **Reply #13 on:** January 21, 2015, 07:37:57 AM »

Quote from: rocs on January 21, 2015, 07:32:36 AM

Thanks, I actually saw that thread earlier when doing some minor research. The fact that this CB750F has rear disk brakes lead me to believe I may have a set of Hayashi's. Fingers crossed...

All the F Models have rear disc brakes. Also check this earlier thread if you have not done so yet: http://forums.sohc4.net/index.php?topic=44776.0

Jerry Rxman Griffin aka MuthaF'er · « **Reply #14 on:** January 21, 2015, 11:42:30 AM »

Late 75 or 76 from the rear master cylinder. 75/76 from the exhaust and the electrical junction box on the front down tubes. 77/78 front forks and brakes. Can't quite make out the engine? Pics help but are still #$%*. Any engine can be painted black. The 77/78 F engines had silver valve adjuster caps on the black head.

My initial thoughts are a 76 from the tank color and I think the frame serial number will bear that out. The side covers have been repainted from the original Phantom Grey. I'll also bet that may be a 77/78 engine from it's serial number.

Can you ask the creator of FrankenBike F to give you both serial numbers?

No problem with using a 77/78 F engine in a 75/76 as long as the valve guides are good and the front sprocket has been dealt with as the final driven output shaft is different in the 77/78 which used a 630 vs 530 chain. The output shaft can be changed or an easier solution is to use a 530 conversion sprocket to match the offset and the rear 530 sprocket.

Oh, and YES, the 75/76 F engine has a power advantage over the 73 -76 K models.

Wobbly · « **Reply #15 on:** January 21, 2015, 11:54:06 AM »

Quote

Oh, and YES, the 75/76 F engine has a power advantage over the 73 -76 K models.

All have 67 hp. Only the F2/F3 differs with 72 hp.

rocs · « **Reply #16 on:** January 21, 2015, 11:54:53 AM »

Quote from: Jerry Rxman Griffin aka MuthaF'er on January 21, 2015, 11:42:30 AM

Late 75 or 76 from the rear master cylinder. 75/76 from the exhaust and the electrical junction box on the front down tubes. 77/78 front forks and brakes. Can't quite make out the engine? Pics help but are still #$%*. Any engine can be painted black. The 77/78 F engines had silver valve adjuster caps on the black head.

My initial thoughts are a 76 from the tank color and I think the frame serial number will bear that out. The side covers have been repainted from the original Phantom Grey. I'll also bet that may be a 77/78 engine from it's serial number.

Can you ask the creator of FrankenBike F to give you both serial numbers?

No problem with using a 77/78 F engine in a 75/76 as long as the valve guides are good and the front sprocket has been dealt with as the final driven output shaft is different in the 77/78 which used a 630 vs 530 chain. The output shaft can be changed or an easier solution is to use a 530 conversion sprocket to match the offset and the rear 530 sprocket.

Oh, and YES, the 75/76 F engine has a power advantage over the 73 -76 K models.

Jerry! Jerry! Jerry!

Thanks!

Jerry Rxman Griffin aka MuthaF'er · « **Reply #17 on:** January 21, 2015, 04:13:53 PM »

Quote from: Wobbly on January 21, 2015, 11:54:06 AM

Quote
Oh, and YES, the 75/76 F engine has a power advantage over the 73 -76 K models.

All have 67 hp. Only the F2/F3 differs with 72 hp.

I will respectfully have to disagree.

ekpent · « **Reply #18 on:** January 21, 2015, 04:28:26 PM »

Reply #7 has some interesting posted 1/4 mile times from old cycle magazine road tests back in the day for various years/models of 750's. http://forums.sohc4.net/index.php?topic=81630.0

rocs · « **Reply #19 on:** January 21, 2015, 07:45:11 PM »

Picked the bike up today. The guy was really nice and threw in some extra parts. The wheels are Hayashi mags and are 19 inch in the front and 18 inch in the rear. Spare parts include:

- spare engine
- 2 Spare sets of carbs
- Chrome engine cover set
- spare cb750F em seat
- comstar wheels
- side covers
- and a bunch of other miscellaneous parts

rocs · « **Reply #20 on:** January 21, 2015, 07:52:39 PM »

seanbarney41 · « **Reply #21 on:** January 21, 2015, 07:56:36 PM »

Is the rear Hayashi not on the bike?...cuz that is a Comstar on the rear in the picture. My Hayashi's have been painted too. I think they were all originally gold anodized.

seanbarney41 · « **Reply #22 on:** January 21, 2015, 07:59:07 PM »

oops there it is, posted while I was posting. Good score, looks like a solid project.

rocs · « **Reply #23 on:** January 21, 2015, 08:00:30 PM »

The rear Hayashi is not on the bike. They were painted white but its peeling badly. The wheels don't appear to have any curb rash or any major imperfections. Will have to get them restored

Wobbly · « **Reply #24 on:** January 22, 2015, 03:10:09 AM »

Quote from: Jerry Rxman Griffin aka MuthaF'er on January 21, 2015, 04:13:53 PM

Quote from: Wobbly on January 21, 2015, 11:54:06 AM
Quote
Oh, and YES, the 75/76 F engine has a power advantage over the 73 -76 K models.

All have 67 hp. Only the F2/F3 differs with 72 hp.

I will respectfully have to disagree.

Okay, I stand corrected. All K-Models have 67 PS, with the exception of the 1976 K6 (63 PS). The F0/F1, however, also have 67 PS, the F2/F3 have 73 PS and not 72 like I said initially.
The F1 was my first CB 750 I bought new in 76, by the way. It was totaled the same year by a car, coming from the opposite direction, and making a left turn--into my bike. In 77, I bought my K7.

This is a good reference site once you get past the German language: http://cb350-750four.de/modelle/cb-750/cb750-f1/

If you think that German is tough, try this Italian site. Here, the K6 is listed with 67 PS. The Italian specs should not differ from the German ones though. I guess, I wasn't the only one confused. No site or review, however, will rate the F0/F1 higher than 67 PS.

http://www.honda4fun.com/modelli

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Author Topic: I am thinking about purchasing this 1976 CB750F but.... (Read 2574 times)

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