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Author Topic: F Owners- What did we get ourselves into?  (Read 31426 times)

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Offline TwoTired

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Re: F Owners- What did we get ourselves into?
« Reply #250 on: January 10, 2008, 12:14:36 am »
 ???

Do NOT buy 069A carbs for a CB750F.  069A carbs are for the smaller displacement CB550F for certain.
I expect you simply need to tune the carbs you already have.
Do a complete and thorough tune up first, vacuum balance the carbs, put in new D8EA plugs and check the deposit color to get an idea which direction you need to change the mixture.  But, with the pods and pipe change, I expect you'll have to go with raised Main Jet Needles and a larger main jet.  To get your throttle response back, turn the pilot air screws in a quarter turn at a time testing for throttle roll-on performance from low RPM between adjustments.  Or, better yet, get the stock air box and filter back on it!

Cheers,
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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 754

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Re: F Owners- What did we get ourselves into?
« Reply #251 on: January 10, 2008, 12:15:47 am »
Front end is from a 1972 750.
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Maker of the WELDLESS 750 Frame Kit
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Terry in Australia

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Re: F Owners- What did we get ourselves into?
« Reply #252 on: January 10, 2008, 02:08:33 am »
Quote from: 754 on January 10, 2008, 12:15:47 am
Front end is from a 1972 750.

Or a K1.  ;D
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I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline slabbedask

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Re: F Owners- What did we get ourselves into?
« Reply #253 on: January 10, 2008, 07:14:55 am »
Ooops, that's what I get for reading posts while in a hurry to get to school, I kinda got your reply mixed up. My bad...
Actually, thanks to a link posted in another thread here I found a Pdf version of the parts list for this bike that someone here had made available. From that I just got confirmation that the carb code should indeed be 064A for my bike! Happy happy, joy joy!! I do plan to put the stock airbox back on. The carbs are vacuum balanced (Thanks to a garage friend that's a sertified MC mechanic and has worked at a Honda garage. He has a superb looking CBX by the way..) I do think that the carbs could do with a rebuild kit (There's a couple of gaskets missing anyway...) I also suspect that one of the carbs run a bit leaner than the other as one of the header tubes are "bluer" than the others. Thanks again TwoTired!
I did suspect that the front end could be from a K, as it didn't look quite like the F pictures I found on the internet. Oh well, it's there, and it works....
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Offline 754

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Re: F Owners- What did we get ourselves into?
« Reply #254 on: January 10, 2008, 08:48:03 am »
No it is not K1.. at least 1/2 or more is not..
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Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Terry in Australia

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Re: F Owners- What did we get ourselves into?
« Reply #255 on: January 10, 2008, 03:28:51 pm »
The K1 and K2 alloy sliders are the same, so are all the internals, the only difference is the chrome headlight ears on the K2, the K1's are painted and the reflectors on the K1 are smaller, like the K0. I know, because I've got both. Cheers, Terry. ;D
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I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline 754

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Re: F Owners- What did we get ourselves into?
« Reply #256 on: January 10, 2008, 08:55:07 pm »
The headlight ears AND the idiot light top clamp..
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Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline slabbedask

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Re: F Owners- What did we get ourselves into?
« Reply #257 on: January 10, 2008, 10:44:10 pm »
I suspect that the bike's had more than one unwanted meeting with the ground, as some of the engine covers are dented and scraped. On the stator cover half of the circular groove is gone! So at one time in it's life it's probably sustained enough damage that the front end has needed replacing. And it looks like it's been a "We'll use what we've got" job....
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Offline Terry in Australia

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Re: F Owners- What did we get ourselves into?
« Reply #258 on: January 10, 2008, 11:59:38 pm »
Quote from: 754 on January 10, 2008, 08:55:07 pm
The headlight ears AND the idiot light top clamp..

Which are common from the K2-K6.................  ::)
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I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline 754

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Re: F Owners- What did we get ourselves into?
« Reply #259 on: January 11, 2008, 07:28:52 am »
Yes, but only came on those sliders one year same as them headlight ears... but if it was not all in one piece they could be K1 legs.

Myself i used to run K2 ears on a 73 because they look muck nicer if you run without signal lights..
« Last Edit: January 11, 2008, 07:30:41 am by 754 »
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Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Terry in Australia

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Re: F Owners- What did we get ourselves into?
« Reply #260 on: January 11, 2008, 02:32:48 pm »
That's it mate, I run K8 forks on my K1 with CycleX 2 inch over tubes, K2 triple clamps, guages and headlight ears. I do like the look, ha ha! ;D
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I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline HondaMan

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Re: F Owners- What did we get ourselves into?
« Reply #261 on: January 11, 2008, 07:37:18 pm »
Quote from: 754 on January 10, 2008, 12:15:47 am
Front end is from a 1972 750.

...except the turn signals, they're too long for a K2...  ???
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See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
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Offline 754

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Re: F Owners- What did we get ourselves into?
« Reply #262 on: January 11, 2008, 07:43:44 pm »
They almost look like they got extenders.. like the hex porion is an inch out from the ear..

 I dont look at signal lights much or run them.. but they look like 74 and earlier type..
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Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline slabbedask

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Re: F Owners- What did we get ourselves into?
« Reply #263 on: January 12, 2008, 02:34:36 am »
The stalks for the turn signals look a lot longer in the picture than they are in real life, due to the reflection in the headlight bracket....
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Offline andy750

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Re: F Owners- What did we get ourselves into?
« Reply #264 on: January 12, 2008, 02:40:47 pm »
I have a K4 and K2 so i took some photos....

K4 - longer indicator stems....



and here is what you need to shorten them :-)



and my K2.....



Hope this helps,
cheers
Andy
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Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. Yamaha Tenere T700 2022

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350

GETNSUMWIND

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Re: F Owners- What did we get ourselves into?
« Reply #265 on: January 13, 2008, 01:48:43 am »
Hey Wheelhhorse, I sold the shafty, so gimme a break
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crystalhelix

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Re: F Owners- What did we get ourselves into?
« Reply #266 on: May 15, 2008, 10:58:03 am »
New F-owner as well, figured I'd revive the thread.  Got my hands on a 75 by accident without knowing.  Cylinder 1 has issues other than that I am having fun.
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Offline Dave-and-his-550

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Re: F Owners- What did we get ourselves into?
« Reply #267 on: July 08, 2008, 05:54:53 pm »
Quote from: andy750 on January 12, 2008, 02:40:47 pm






Where'd you get those white turn signals?? I like em!
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Offline mick750F

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Re: F Owners- What did we get ourselves into?
« Reply #268 on: July 08, 2008, 06:12:03 pm »
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Offline andy750

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Re: F Owners- What did we get ourselves into?
« Reply #269 on: July 09, 2008, 06:40:10 am »
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Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. Yamaha Tenere T700 2022

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350
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