Author Topic: 400 Vent pipes routing question(s)  (Read 577 times)

Offline McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 6289
    • View Profile
400 Vent pipes routing question(s)
« on: April 01, 2022, 04:17:30 PM »
From my memory the four carb overflow pipes are routed between the engine and the rear swing arm where they dangle down with an inch or so where the pipes end.

There is a vent pipe on the bottom of the air filter housing plus a vent on the black intake box between the carbs & the air filter.
I assume these two pipes terminate at the clip on the centre stand clamp area passing through the gap between the engine casing & the swing arm?

My crankcase pipe was cut off so not sure where that goes / ends up, likewise where does the battery vent pipe terminate as mine was missing?
« Last Edit: April 01, 2022, 04:51:41 PM by McCabe-Thiele (Ted) »
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline Deano400

  • SOHC Expert
  • Posts: 489
    • View Profile
Re: 400 Vent pipes routing question(s)
« Reply #1 on: April 01, 2022, 04:53:22 PM »
The breather from the top of the rocker breather box goes over the carbs, over the air manifold and connects to the side entry of the air filter drain chamber.
The drain from the chamber goes through the left hand clip on the centre stand mount.
The air manifold drain goes through a lug on the rear of the crank case.
The two carb vents go over the air manifold and down between the crank case and swing arm.
The four carb drains go down between the crank case and swing arm.
The battery breather goes through the right hand clip on the centre stand mount via the lug on the rear of the frame.
« Last Edit: April 01, 2022, 04:57:13 PM by Deano400 »

Offline McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 6289
    • View Profile
Re: 400 Vent pipes routing question(s)
« Reply #2 on: April 01, 2022, 06:16:39 PM »
Thanks Deano😁
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline Oddjob

  • SOHC Jedi
  • Posts: 4296
    • View Profile
Re: 400 Vent pipes routing question(s)
« Reply #3 on: April 01, 2022, 06:52:00 PM »
Thought the pipe routing was on the PDI instructions available on the site Ted, same things you used to do cable routing etc.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 6289
    • View Profile
Re: 400 Vent pipes routing question(s)
« Reply #4 on: April 01, 2022, 07:20:33 PM »
I've had a look Ken I never realised how much assembly work was involved on a bike PDI until today.
« Last Edit: April 02, 2022, 09:55:40 AM by McCabe-Thiele (Ted) »
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal