What are these intake manifold tubes?
#1
What are these intake manifold tubes?
1974 F100 460
And do I need them? One I think is the old hot air choke and one goes hooks to the carb via a vacuum line. As you can see the carb has an electric choke and (what I think it is) the old hot air choke tube attached to the choke.
Could I eliminate these and is there a block off plate that could replace the plate with the two holes in the intake manifold.
What does the line that goes to the carb vacuum port do?
And do I need them? One I think is the old hot air choke and one goes hooks to the carb via a vacuum line. As you can see the carb has an electric choke and (what I think it is) the old hot air choke tube attached to the choke.
Could I eliminate these and is there a block off plate that could replace the plate with the two holes in the intake manifold.
What does the line that goes to the carb vacuum port do?
#4
On the stock setup, one tube ran up to the top of the carb and sucked in fresh air while the other ran through the choke cap and ultimately accessed a small vacuum port. Air was pulled from the top of the carb, down into the manifold where it heated up, into the choke cap where it heated a bimetal spring, and then ran through a small hole in the carb which sourced manifold vacuum for air flow.
#7
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
FuzzFace2
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
8
09-18-2018 12:18 PM
arnegrant
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
5
04-02-2009 01:32 PM
76 F250 4X4
Fuel Injection, Carburetion & Fuel System
2
09-20-2004 12:12 AM
Big Red
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
4
12-17-2003 08:33 AM