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SOHC.co.uk Forums => CB500/550 => Topic started by: sye on February 27, 2019, 02:52:19 PM

Title: Breather routing
Post by: sye on February 27, 2019, 02:52:19 PM

Hi, Can anyone tell me the routing for the 500 four engine breather pipe please and where it terminates?

Title: Re: Breather routing
Post by: Johnwebley on February 27, 2019, 03:23:42 PM

Over the plenium chamber. Then down along side the aircleaner case and the electrics area

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Title: Re: Breather routing
Post by: sye on February 27, 2019, 03:35:36 PM

Quote from: Johnwebley on February 27, 2019, 03:23:42 PM

Over the plenium chamber. Then down along side the aircleaner case and the electrics area

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Thanks John, so that's over the top of the carbs down the left hand side of the frame and then between the air cleaner case and electrics. Does it go down the forward gap between the air cleaner and electrics or down the back?

Title: Re: Breather routing
Post by: Johnwebley on February 27, 2019, 03:38:05 PM

Forward.


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Title: Re: Breather routing
Post by: sye on February 27, 2019, 03:38:40 PM

Thanks muchly  :)

Title: Re: Breather routing
Post by: sye on February 27, 2019, 04:42:55 PM

OK, I've tried routing the pipe and it's too big  :'( The OE part is unavailable, so I bought some 12mm ID x 16mm OD silicone hose and it's far too big. What size do you use? I suppose that 10mm ID x 12mm OD could be squeezed on but it starts to get expensive if I have to try loads to find the right one.

TIA

Title: Re: Breather routing
Post by: sye on March 02, 2019, 07:53:23 AM

For anyone else that needs to know, the breather is 10mm ID and 14mm OD, which I know for sure is correct.

Can anyone tell me where the pipe terminates and how it's secured down the left hand side.

TIA

Title: Re: Breather routing
Post by: Bryanj on March 02, 2019, 08:50:17 AM

Just below swing arm level and it isnt

Title: Re: Breather routing
Post by: sye on March 02, 2019, 08:55:07 AM

Quote from: Bryanj on March 02, 2019, 08:50:17 AM

Just below swing arm level and it isnt

Thanks Bryan, I appreciate it.

Title: Re: Breather routing
Post by: deltarider on March 02, 2019, 10:00:14 AM

It's shown on p. 170 of the Shop Manual Honda CB500 - 550
Right here: http://www.classiccycles.org/media//DIR_1653304/DIR_1653404/DIR_1653507/ecc6759db0a214d5ffff8825ffffe41e.pdf

Title: Re: Breather routing
Post by: Bryanj on March 03, 2019, 08:44:18 AM

I remember those books Ken, usefull for holding down the cbx rocker cover while the evo stick set to hold tubber gasket in!
All the CD manuals i have are scanned from those when i was on good terms with local dealer.

Title: Re: Breather routing
Post by: Bryanj on March 03, 2019, 10:39:42 AM

Yup, think they were up to volume 12 when i was doing it!

Title: Re: Breather routing
Post by: deltarider on March 03, 2019, 01:35:09 PM

Is there a picture of the cover?

Title: Re: Breather routing
Post by: Bryanj on March 03, 2019, 03:15:15 PM

The "Blue" books were ring binders with many different bikes inside each one so the cover was plain.

Title: Re: Breather routing
Post by: Bryanj on March 04, 2019, 09:38:04 AM

Thats one of the sections that went inside the hardback folder.

Title: Re: Breather routing
Post by: Bryanj on March 04, 2019, 10:05:12 PM

You are right! Lazy me only looked at first pic mate.