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Author Topic: 1976 CB550K Stock Air Box Question  (Read 3082 times)

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Offline PrsCustom22j

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1976 CB550K Stock Air Box Question
« on: March 24, 2012, 11:04:56 AM »
I recently ordered a stock airbox off of ebay and was wondering if u all could help me figure out if i'm missing any parts aside from the breather tubes to get this on my bike.  here are some pics of what i received.  thanks in advance 







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1976 Honda CB550K

Offline LesterPiglet

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Re: 1976 CB550K Stock Air Box Question
« Reply #1 on: March 24, 2012, 12:21:54 PM »
In your first pic that inlet should have a wire grill on it.  Inside the airbox itself there should be some more metal parts.

http://www.cmsnl.com/honda-cb550k3-four-usa_model1015/partslist/F++16.html
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Offline PrsCustom22j

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Re: 1976 CB550K Stock Air Box Question
« Reply #2 on: March 24, 2012, 12:42:59 PM »
yea i see that...any recommendations on finding one?

what about 18,19,20,21?   i don't seem to have those.  are they super important?
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1976 Honda CB550K

Offline LesterPiglet

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Re: 1976 CB550K Stock Air Box Question
« Reply #3 on: March 24, 2012, 12:48:41 PM »
Not super important but they do perform a function.  You could easily make your own grill.
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'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional

Offline TwoTired

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Re: 1976 CB550K Stock Air Box Question
« Reply #4 on: March 24, 2012, 01:42:30 PM »
The air horn was only used on Cb550F models and the 77-78 Cb550K models.  It should have a screen/grill in scoop.
It was held on by tall shaft wing nuts, which are far more convenient than the nuts shown in your picks.

Your air filter is upside down.  That big hole will provide an air bypass around the filter element.  I think mice could be ingested the way it is now.  But, don't tell PETA or PETI.  (People for Ethical Treatment of Insects)  ;D

Quote from: PrsCustom22j on March 24, 2012, 12:42:59 PM
what about 18,19,20,21?   i don't seem to have those.  are they super important?

Those parts comprise the engine breather, water separator.  Without them, the filter element will foul and clog pretty quickly with engine vapors/oil droplets, etc.
The filter seats/seals on top of the breather components to block off that big hole that you show placed on top.

Funny you should ask if they are important.  The assembly of components works as part of a whole system.
I've seen people drive 4 wheel cars with only three wheels attached.  But, I wouldn't want to operate it that way routinely.  ;D

Super important?  Well, the engine will run without any filter components, just not well, and with some risk to engine longevity.  It will run without a spark plug, too!  But, that would not be desirable, imo.

Should I mention you are missing hoses that connect to those fittings.  Two of them are not ordinary.

Cheers,
« Last Edit: March 24, 2012, 01:44:43 PM by TwoTired »
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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 PrsCustom22j

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Re: 1976 CB550K Stock Air Box Question
« Reply #5 on: March 26, 2012, 04:47:03 PM »
i guess i'll have to look around.  hopefully i can scrounge up those missing parts.   ;D
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1976 Honda CB550K

Offline SohRon

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Re: 1976 CB550K Stock Air Box Question
« Reply #6 on: March 26, 2012, 05:51:00 PM »
 :)  eBay, BikeBandit, David Silver Spares:

« Last Edit: April 28, 2012, 08:39:25 AM by SohRon »
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Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline TwoTired

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Re: 1976 CB550K Stock Air Box Question
« Reply #7 on: March 26, 2012, 06:06:17 PM »
Quote from: SohRon on March 26, 2012, 05:51:00 PM
:)  eBay, BikeBandit, David Silver Spares:


Nice picture.  :)

The only things I don't see are the metal compression sleeves for keeping the assembly bolts from extruding the plastic components.

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 PrsCustom22j

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Re: 1976 CB550K Stock Air Box Question
« Reply #8 on: March 26, 2012, 07:06:01 PM »
do i have the correct air box lid?  it seems as if mine is different from the one in the picture.
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1976 Honda CB550K

Offline SohRon

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Re: 1976 CB550K Stock Air Box Question
« Reply #9 on: March 26, 2012, 09:44:38 PM »
Quote from: PrsCustom22j on March 26, 2012, 07:06:01 PM
do i have the correct air box lid?  it seems as if mine is different from the one in the picture.

If your bike is a "K" model, you should have what's in the pic. As TT said : "The air horn was only used on Cb550F models and the 77-78 Cb550K models", so the cover you have is for an "F" or later "K" model.

The spacers TT was referring to are two ~ 1/2 inch X 1/4 inch dia steel tubes that fit in between the plenum and the filter box (not shown in the pic - thanks, TT; I hadn't noticed that omission. I'll have to re-shoot!).

I'm not familiar enough with the "F" bikes to tell you if you can use that on your "K" bike or not; there may be differences in the seat configuration(?). Maybe someone who knows will chime in.  :)

Good luck!
« Last Edit: March 26, 2012, 09:58:26 PM by SohRon »
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"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline PrsCustom22j

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Re: 1976 CB550K Stock Air Box Question
« Reply #10 on: April 27, 2012, 05:22:43 PM »
great news...i finally gathered up the air box parts i need for my honda cb550k.  i didn't realize it last time but the air box i bought was for a 550F.    am i missing anything for my 1976 550K?   i just got the parts in today so i'm super excited to get my bike running back to normal.  here are some pics of the "new" parts.



and this...not sure what its used for.   anyone know?




thanks everyone ur knowledge is appreciated.

- john
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1976 Honda CB550K

Offline TwoTired

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Re: 1976 CB550K Stock Air Box Question
« Reply #11 on: April 27, 2012, 05:50:00 PM »
Quote from: PrsCustom22j on April 27, 2012, 05:22:43 PM
great news...i finally gathered up the air box parts i need for my honda cb550k.  i didn't realize it last time but the air box i bought was for a 550F.   

Except for the tray vs air horn, the filter assemblies are the same f and K for the 76 year (and some others).

Quote from: PrsCustom22j on April 27, 2012, 05:22:43 PM
am i missing anything for my 1976 550K? 
I don't see any mounting brackets, screws, or compression collar hardware.


Quote from: PrsCustom22j on April 27, 2012, 05:22:43 PM
and this...not sure what its used for.   anyone know?
It goes on top of the air filter box at the front, to seal where it nears the tray (which is the top for the filter box).
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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.
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