Topic: new (for me) '78 CB750F SuperSport - project bike

[dboblet]

Hello All, Just got my dream bike (at least it was 20 some years ago).  It's been sitting in a field (well it looks like it) with last registration tag in 1984, she's a '78 CB750 F1 Supersport.  Yike, only 12k miles on the odo, off the DMV system and she's taking shape after a lot of hard work.  The engine still seems tight, the Carbs are operational but a bit gummy, the tires are loaded with good tread (rotten of course) the Tank has rust in it, there are a plathora of missing parts (I think I might own a controlling interest in E-Bay by now).  I've taken before and I'm taking during project pics and will start posting them as soon as I figure out where and exactly how.  For now, the rust is receeding in favor of new paint and cosmeticly she's starting to look pretty cool.  I just wish I had a color electric schematic for the '78 F1.  I think I can figure out some of the problems here eventually but the Clymer manual I have is miniature and black and white so even a magnifying glass doesen't help much.  Anyway, great to find a cool group like this.  Hataway Pines, CA is the heart of great motorcycle riding country so when I get her going, I'll be winding round those sweeping curves.  See you there.

[hopterfixer]

Welcome, try this link for diagrams http://www.oldmanhonda.com/MC/WiringDiagrams/MCwiring.php.
Just so you are official, let me be the first to say we want to see photos of your ride.

[burmashave]

Drat! Hopter, I was just ready to fire that link and actually provide help. ;-)

Welcome to the show, dboblet!

[hopterfixer]

I was typing like mad to be the first too   

[TwoTired]

According to the Honda Shop manual.  A 1978 CB750 F  Supersport should be an F3.  It has a supplement addition just for it.

Cheers,

[tattoo dave]

I just finished my 78ss cafe project and may still have some stock parts around if you are doing a restoration. Let me know what you may need and Ill see if I can round them up! Good luck!

[dboblet]

Wow, you guys are great.  The schematic was JUST what I was looking for.  I'm on the hunt for cheapo rebuild kits for the front and rear master cylinders as well.  Duel front disk so earlier than 78 wouldn't do (or so I'm told).  I'll tackle the electrical gremlins this weekend, armed with the magic color tallisman.  This is the most fun I've had in years (hmmm maybe I shouldn't admit that fact).  Anyway, thanks again to you all.  One more question... since it's been off the DMV list for about a decade or more, what problems can I look forward to getting a pink and registration when the times comes?

[Klark Kent]

with the cost of energy skyrocketing download the shop manual and burn your clymer next winter. 

[dboblet]

Thanks for the shop manual.  A friend gave me a shop manual for a 79 (ugh) DOHC 750 but there are so many differences that it's proved to be of only the most basic use.

BTW, the Frame says F1, but one of the comments I hears said a 78 CB750f would be an f3.  Never heard of an f3 myself, but is it possible??  This lady has a black engine, 4:1 exhaust, and duel front disk brakes.  From what I've read, that makes her an F2... but, heck, 78 was a long long time ago so I'm just not sure.  Maybe I need to pull off the frame serial number to be sure.

[TwoTired]

From Group 27,  Shop Manual Honda  CB750
Supplement To CB750F3 ('78)
Engine No. CB750E--2200001 and subsequent
Frame No. CB750F--3100002 and subsequent
(End excerpt)

F0 was the 1975 model
F1 was the 1976 model
These had single discs front and rear, Silver forks, Silver engines, wire spoke wheels.

The F2 was the 77 model.
Comstar wheels, dual front disk, single rear, Black motor, Black forks.
The F3 for 78 looked the same.

Cheers,

[dboblet]

my engine # 3222625
my Frame # 2211521

I guess that confirms it.  She's an F3.  Thanks for the final clarification.  Now I'll know what to tell people when I'm looking for parts.

I downloaded the manual from the link provided.  Thanks again.