Notices
1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck

Tube going to carb?

 
  #1  
Old 07-12-2019, 03:02 PM
changosanch
changosanch is offline
New User
Thread Starter
Join Date: May 2019
Location: ARIZONA
Posts: 7
changosanch is starting off with a positive reputation.
Tube going to carb?

Hello friends,

As I'm buying parts for my engine (351M), I encountered this part that has me baffled. Maybe it's part of emissions? IDK
I can't find any information on it thru illustrations or part numbers as I cannot find any markings.
Tube that connects on passenger side of carb to rear of the carb (2150).
Can someone enlighten me and correctly identify it?

1979 F100 SuperCab

Thank you!


 
  #2  
Old 07-12-2019, 03:08 PM
CelticOne's Avatar
CelticOne
CelticOne is offline
Regular User
Join Date: Sep 2014
Location: Ottawa, Ontario (Canada)
Posts: 1,438
CelticOne is a splendid one to beholdCelticOne is a splendid one to beholdCelticOne is a splendid one to beholdCelticOne is a splendid one to beholdCelticOne is a splendid one to beholdCelticOne is a splendid one to beholdCelticOne is a splendid one to behold
Hello and welcome to FTE!

That is a heat stove pipe - used by a climactic carb (or electric assist carb) to open the choke. Warm air from the manifold activate the bi-metal spring in the choke.
 
  #3  
Old 07-12-2019, 03:38 PM
changosanch
changosanch is offline
New User
Thread Starter
Join Date: May 2019
Location: ARIZONA
Posts: 7
changosanch is starting off with a positive reputation.
Awesome!

Thanx much!
 
  #4  
Old 07-12-2019, 03:41 PM
smle
smle is offline
Elder User
Join Date: Apr 2014
Location: Oakland, AR
Posts: 559
smle is starting off with a positive reputation.
Isn't he missing the part that attaches to the choke.
 
  #5  
Old 07-13-2019, 06:59 AM
scottscott
scottscott is offline
Elder User
Join Date: Dec 2007
Location: Wildwood Pa
Posts: 736
scottscott has a good reputation on FTE.scottscott has a good reputation on FTE.
Originally Posted by smle View Post
Isn't he missing the part that attaches to the choke.
Yes he is. There should be a metal tube running from the empty hole in the intake to the brass fitting on the choke thermostat. The brass fitting can be see in about the middle of the circled parts.
 
  #6  
Old 07-13-2019, 03:31 PM
changosanch
changosanch is offline
New User
Thread Starter
Join Date: May 2019
Location: ARIZONA
Posts: 7
changosanch is starting off with a positive reputation.
Acknowledged. You mean the choke "pull off"?
 
  #7  
Old 07-13-2019, 04:06 PM
FuzzFace2's Avatar
FuzzFace2
FuzzFace2 is offline
Post Fiend
Join Date: Nov 2015
Location: Angier, NC
Posts: 10,149
FuzzFace2 is a name known to allFuzzFace2 is a name known to allFuzzFace2 is a name known to allFuzzFace2 is a name known to allFuzzFace2 is a name known to allFuzzFace2 is a name known to all
Originally Posted by changosanch View Post
Acknowledged. You mean the choke "pull off"?
No not the pull off.
If you look in the middle of that circle there is a fitting pointing down between the black housing and the EGR bolt base.
As said there should be a metal line to that fitting then to the intake next to where that metal line is in the picture.

The air flow (filtered cold) is from the carb down the metal line to the intake where it picks up heat from a piece in the intake exh cross over.
The heated air then goes out and up the other metal line to the choke housing to Open the choke.
BTW you could have a vacuum leak at that fitting as a little vacuum is used to pull the air thru the system.

My 81 F100 with a 300 six uses the same heat asst. for the choke opening and I have a non Ford with a v8 that uses this also.
Dave ----

edit there is no electric to this choke so this heat is the only way I see the choke opening so needs to be fixed.
 
  #8  
Old 07-13-2019, 04:39 PM
changosanch
changosanch is offline
New User
Thread Starter
Join Date: May 2019
Location: ARIZONA
Posts: 7
changosanch is starting off with a positive reputation.
Got it. I'll get a choke stove kit from the auto store.

https://www.oreillyauto.com/detail/b...979/ford/f-250

Thanks!
 
  #9  
Old 07-13-2019, 06:28 PM
FuzzFace2's Avatar
FuzzFace2
FuzzFace2 is offline
Post Fiend
Join Date: Nov 2015
Location: Angier, NC
Posts: 10,149
FuzzFace2 is a name known to allFuzzFace2 is a name known to allFuzzFace2 is a name known to allFuzzFace2 is a name known to allFuzzFace2 is a name known to allFuzzFace2 is a name known to all
That should work just know you will not be using all of it.
You will need the tubing, white insulation, the nut & barrel and maybe 1 of the adaptors.

On my 300 I swapped on a set of EFI exh manifold and they don't have a need for the choke heat, no choke with EFI, so I had to make my own set up.
I did buy that same kit but only used the white insulation, the nut & barrel. I picked up some copper tubing to wrap around 1 of the exh manifolds to pick up the heat for the choke.
It hooks to all the factory points on the carb & choke housing and in testing seams to work just fine.
The kit & copper tubing

Cool filtered air

Copper wrap around exh manifold to pick up heat

Hooked up at the choke housing

That metal half can thing you can place in the exh manifold and run the tubing into it to pick up heatif you do not have a spot in the intake like you but some v8's and 6's run it thru the exh manifold.
Stock log exh manifold

Dave ----
 

Thread Tools
Search this Thread

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.