Merry Christmas and welcome to Packard Motor Car Information! If you're new here, please register for a free account.  
Login
Username:

Password:

Remember me



Lost Password?

Register now!
FAQ's
Main Menu
Recent Forum Topics
Who is Online
45 user(s) are online (40 user(s) are browsing Forums)

Members: 0
Guests: 45

more...
Helping out...
PackardInfo is a free resource for Packard Owners that is completely supported by user donations. If you can help out, that would be great!

Donate via PayPal
Video Content
Visit PackardInfo.com YouTube Playlist

Donate via PayPal




What's this tube?
#1
Quite a regular
Quite a regular

Dave Merrick
See User information
Well, I was cleaning up the manifolds today and I broke the tube that goes out from the top of the exhaust manifold and goes through to the bottom. Connects to the carb.

I seem to be having trouble finding info on what this tube is, what it does and what it's supposed to look like. Best I can find is on page 15 of the fuel & exhaust service manual.

What is it what does it do, where's it supposed to go to/from and how do I replace it?

Posted on: 2010/11/20 23:53
----------------
1951 Packard 300 (2472)
"Built to outlast them all..."
 Top  Print   
 


Re: What's this tube?
#2
Home away from home
Home away from home

Eric Boyle
See User information
That's a heat tube that supplies hot air to the choke. You need it. Define what you mean by "broke it", did you just break the top off where it sticks out a little, or is the whole thing destroyed?

And there's actually two pieces of this tube, per say. There's a piece that's supposed to be permanently in the manifold, and the other piece that actually goes from that tube to the carb. If it's the latter, you can make a new one using a piece of brake line and a compression fitting. If it's the former, that's a little more difficult but can be done as well.

Posted on: 2010/11/21 0:17
 Top  Print   
 


Re: What's this tube?
#3
Home away from home
Home away from home

fred kanter
See User information
It's the choke heat tube, goes "through" the exh manifold, then another tube connects by just pushing into the manifold and goes to the choke mechanism on the carb. Vacuum from the carb pulls heated air up the tube and warms the thermostatoic spring in the housing, gradually opening the choke as the engine warms up.

Fred Kanter
Kanter Auto Products
Boonton NJ

Posted on: 2010/11/21 0:18
 Top  Print   
 


Re: What's this tube?
#4
Quite a regular
Quite a regular

Dave Merrick
See User information
it must have been very brittle. I just barely grazed it and it broke off flush with the top of the manifold.

Posted on: 2010/11/21 0:18
----------------
1951 Packard 300 (2472)
"Built to outlast them all..."
 Top  Print   
 


Re: What's this tube?
#5
Home away from home
Home away from home

Eric Boyle
See User information
Don't worry about it then, as long as you can put the tube from the carb in it and it stays there then it's not really an issue.

Posted on: 2010/11/21 0:20
 Top  Print   
 


Re: What's this tube?
#6
Home away from home
Home away from home

fred kanter
See User information
Dave,

Common for a 50+ year old steel tube connected to a 500+? degree exhaust manifold to get brittle.

Posted on: 2010/11/21 0:22
 Top  Print   
 


Re: What's this tube?
#7
Quite a regular
Quite a regular

Dave Merrick
See User information
So just grab the broken piece with some needle nose and pull it out?

Posted on: 2010/11/21 0:22
----------------
1951 Packard 300 (2472)
"Built to outlast them all..."
 Top  Print   
 


Re: What's this tube?
#8
Home away from home
Home away from home

Eric Boyle
See User information
If it's the piece that's not part of the manifold, yes. If it is, then don't try to remove it, just make it big enough for a new tube to fit in it.

Posted on: 2010/11/21 0:24
 Top  Print   
 


Re: What's this tube?
#9
Quite a regular
Quite a regular

Dave Merrick
See User information
Is this stuff documented anywhere?
I had a devil of a time finding anything on it.

Posted on: 2010/11/21 0:25
----------------
1951 Packard 300 (2472)
"Built to outlast them all..."
 Top  Print   
 


Re: What's this tube?
#10
Home away from home
Home away from home

Eric Boyle
See User information
I wouldn't say "documented" per say, but more like "common knowledge" to those who've worked on cars like these for years.

You can learn a lot from older people if they're worth learning from.

Posted on: 2010/11/21 0:29
 Top  Print   
 









- The following Google Ad-Sense Advert helps fund the cost of providing this free resource -
- Logged in users will not see these. Please Join and Donate to help support the website -
Search
Recent Photos
Photo of the Day
Recent Registry
Upcoming Events
Website Comments or Questions?? Click Here Copyright 2006-2024, PackardInfo.com All Rights Reserved