• 2 Vote(s) - 3 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Air Cleaner Vacuum line connection?
#1
When I took my air cleaner assembly off of my 351C with 2V, the vacuum line that connects to the bottom of the air cleaner was disconnected before I had achance to see where it was connected.
I check the Ford Shop Manuals and it just says that it connects to the "vacuum source".

Can anyone please point out where this connects to?

Thanks.
  Reply
#2
If you have the standard v2 air cleaner there should be one flapper door for the heat riser, the air intake. When the engine is cold the flapper should be closed which allows air flow from the heat riser coming off the exhaust. This heats the incoming air to help a cold motor warm up faster.
When the engine heats up a bimetal heat switch kicks on which shuts the vacuum signal to the heat riser flapper and closes the heat riser down so cooler air flows into the intake.

There should be a hose going from the flapper motor to a metal vacuum switch with 2 ports one port is taken by the flapper hose the other to full manifold vacuum source.
  Reply
#3
(09-08-2010, 10:04 PM)72HCODE Wrote: If you have the standard v2 air cleaner there should be one flapper door for the heat riser, the air intake. When the engine is cold the flapper should be closed which allows air flow from the heat riser coming off the exhaust. This heats the incoming air to help a cold motor warm up faster.
When the engine heats up a bimetal heat switch kicks on which shuts the vacuum signal to the heat riser flapper and closes the heat riser down so cooler air flows into the intake.

There should be a hose going from the flapper motor to a metal vacuum switch with 2 ports one port is taken by the flapper hose the other to full manifold vacuum source.

Yes, thanks.
Where or which is factory "manifold vacuum source"
  Reply
#4
The vacuum source is a port on the vacuum tree behind the carb on the intake manifold, near where you also get vacuum for the brake booster and transmission vacuum modulator (if so equipped).

Joe
'72 Grandé, 351C, Autolite 2100, FMX, 2.75
  Reply
#5
(10-02-2010, 11:47 PM)Joe Wrote: The vacuum source is a port on the vacuum tree behind the carb on the intake manifold, near where you also get vacuum for the brake booster and transmission vacuum modulator (if so equipped).

Thanks!
  Reply
Share Thread:  


Possibly Related Threads...
Thread Author Replies Views Last Post
  1973 351C vacuum lines and eventual other questions scottyrocks 14 287 08-12-2018, 11:53 AM
Last Post: Don C
  1973 351 H code vacuum routing Mikes73 6 4,459 08-10-2018, 05:12 PM
Last Post: scottyrocks
  Last ram air question i promise eventhorizon 9 873 07-21-2018, 10:28 AM
Last Post: Carolina_Mountain_Mustangs
  Air Cleaner??? 71_resurrection 4 311 06-18-2018, 12:38 AM
Last Post: 71_resurrection
  Sensor on vacuum line Q code John J 1 216 06-10-2018, 03:49 PM
Last Post: Don C
  Vacuum Motor Actuators-Help Me ID 4mm 2 328 03-04-2018, 12:08 AM
Last Post: secluff
  I need help routing my vacuum lines! kevken1959 5 529 12-17-2017, 11:02 AM
Last Post: kevken1959
  Ram Air friendly distributer cigarguy 6 722 11-15-2017, 11:18 AM
Last Post: Stanglover



Users browsing this thread: 1 Guest(s)