Author Topic: cb 550 air box  (Read 1672 times)

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Offline Heisenberg

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cb 550 air box
« on: June 10, 2013, 07:24:35 PM »
Hey guys,

So i ordered a 78 cb550 air-box.  As i'm waiting for the Uni Air Filter NU-4055 to come in the mail, my eagerness has me asking myself questions.  After looking through the air-box, i noticed i could possible be missing parts.  I believe from the picture i'm missing 5 the swing arm and 20 the element.  Is the element piece a another foam filter? and it seems like i can't find anywhere to order the swing arm. is installation possible without it?

thanks,

 
78' HONDA CB550K

Offline KennyRedman

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Re: cb 550 air box
« Reply #1 on: June 10, 2013, 07:27:00 PM »
Find SohRon's build thread- he goes into great detail about all these parts. It's pretty cool.

Offline RAFster122s

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Re: cb 550 air box
« Reply #2 on: June 10, 2013, 07:32:49 PM »
The bottom filter is a thin sheet of foam. It helps block fluid (from breather drain) from getting sucked into the filter and carbs.
David- back in the desert SW!

Offline Dave Voss

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Re: cb 550 air box
« Reply #3 on: June 10, 2013, 10:25:46 PM »
Item #5 is just a spring clip that provides a bit of force to keep the air filter element pressed against the carb plenum opening in the air box.  You could probably live without it, or you could fabricate a similar piece from a strip of spring steel.
-Dave Voss
(past) '78 CB550K4
(past) '75 CB550K1
(now) '95 R1100RSL

Offline goldarrow

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Re: cb 550 air box
« Reply #4 on: June 10, 2013, 11:42:08 PM »
Uni 4055 filter fits tight in there, you won't need the 5
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Offline Heisenberg

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Re: cb 550 air box
« Reply #5 on: June 11, 2013, 01:01:59 AM »
Uni 4055 filter fits tight in there, you won't need the 5

ok that's great.. i could always make a clip if necessary.


Thanks guys..

I'm finally sorting things out as far as plugging drain tubes, etc..  but unfortunately  piece 24 (the right angle attachment for the main breather tube) is cut in half at the taper, so i can't properly attach the tube.  Any one get around this piece?  Can't find it on any OEM site.   suggestions for a custom  piece?  I've thought of running it through the bottom drain and plug breather part instead? (disastrous?)   there's a handful of  options im sure..but thought i'd see if anyone has a wiser recommendation or idea.

love this site thanks

78' HONDA CB550K

Offline Dave Voss

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Re: cb 550 air box
« Reply #6 on: June 11, 2013, 05:55:09 AM »
I'm finally sorting things out as far as plugging drain tubes, etc..  but unfortunately  piece 24 (the right angle attachment for the main breather tube) is cut in half at the taper, so i can't properly attach the tube.  Any one get around this piece?  Can't find it on any OEM site.   suggestions for a custom  piece?  I've thought of running it through the bottom drain and plug breather part instead?

I connected a continuous length of braided breather hose to the nipple on the air box without using a right angle adaptor, which works great since the hose flexes enough to not kink.  Avoid using the drain nipple as the breather connection, as it creates a low spot in the hose where liquid can collect, possibly blocking it.
-Dave Voss
(past) '78 CB550K4
(past) '75 CB550K1
(now) '95 R1100RSL

Offline Duanob

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Re: cb 550 air box
« Reply #7 on: June 11, 2013, 12:03:08 PM »
As far as the clip goes I just used a piece of wedged cedar shingle cut to size. All the spring does is help keep air from bypassing the filter. Anything that wedges the open side of the filter to the venturi plenum will do the job.
"Just because you flush a boatload of money down the toilet, doesn't make the toilet worth more",  My Stepfather the Unknown Poet

1974 CB360T
1976 CB550K2 Resurrected
1976 CB550F2 Barn Find
1979 CX500 VG "HONDA-GUZZI"
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