This will take you to the main site where there is history, technical information and other information on these cars.
This takes you back to the main page of the forums.
This is the control panel to change your password, information and preferences on this message board.
Click here if your lost your password or need to register on this message board. You must be a registered user to post. Registration is free.
Search this board for information you need.
Click here to buy cool Squarebirds mechandise.
Click here to support Squarebirds.org. For $20 annually receive 20mBytes webspace, a Squarebirds e-mail address and member's icon on the message board.
  #1  
Old 11-29-2016, 11:21 AM
PC1963T-Bird PC1963T-Bird is offline
Newbie
 
Join Date: Jul 18 2014
Posts: 13
PC1963T-Bird is on a distinguished road
Default Autolite 4100 Question

So I decided to bite the bullet and try and rebuild my Autolite 4100 myself. I have next to zero mechanical knowledge but I have enough documentation and Youtube videos on how to do it. Worse case scenario is I just buy a rebuilt one if I screw something up. My question is though, the Primary Throttle Shaft and Lever Assembly plus the Accelerating Pump Rod are both really, really rusty and nasty. Will soaking these in Carb Cleaner remove the rust or should I try and find new ones? I've yet to find just those pieces for sale though.

Any help?
Reply With Quote
  #2  
Old 11-29-2016, 11:51 AM
Joe Johnston Joe Johnston is offline
Super-Experienced
 
Join Date: Dec 23 2008
Posts: 670
Joe Johnston is on a distinguished road
Default

If its really that bad you will be fighting an uphill battle. Post a picture and someone can make a recommendation. Perhaps you can ask Santa for a new carb??
Reply With Quote
  #3  
Old 11-29-2016, 12:09 PM
jopizz's Avatar
jopizz jopizz is offline
Excellent Auto Mechanic for over 40 years.
 
Join Date: Nov 23 2009
Posts: 4,881
jopizz is on a distinguished road
Default

The throttle shafts are brass so a soaking in carb cleaner and a light buffing should clean those up. The smaller metal parts can be cleaned using a wire brush or a light sanding if they are rusty.

John
__________________
John Pizzi - Squarebirds Administrator
1959 Convertible

Thunderbird Registry #36223
jopizz@verizon.net 856-779-9695

http://www.squarebirds.org/picture_gallery/TechnicalResourceLibrary/trl.htm
Reply With Quote
  #4  
Old 11-29-2016, 01:19 PM
Yadkin Yadkin is offline
Banned
 
Join Date: Aug 11 2012
Posts: 1,910
Yadkin is on a distinguished road
Default

Carb cleaner is a solvent and will remove the grease, grime and crud. Use that first then separate out the steel parts that are rusted for additional treatment.

If at all possible, leave the throttle shafts intact by NOT unscrewing the two screws at each throttle plate. The plates are carefully positioned at the factory then after the screws tightened, the ends are pressed in to prevent them from backing out. Nothing worse than having your engine swallow a screw, then have the plate hang up at high engine speed. Use a wire brush on a dremel to clean these steel plates up, followed by detergent and hot water, then rinse and dry with a clean paper towel. Finally, use a light spray of carb cleaner to absorb and remove all the remaining moisture.

Rust on small steel parts like linkages and screws can be removed easily using Muriatic acid. NOT for brass and aluminum. Follow all precautions. I like to use disposable glad ware, disposable nitrile gloves and do it outside with the wind behind me. Do not soak for more than 30 seconds or so, agitate, then remove from the bath and immediately soak in detergent and water, then rinse and dry.
Reply With Quote
  #5  
Old 12-02-2016, 08:49 AM
bbogue bbogue is offline
Newbie
 
Join Date: Oct 25 2015
Posts: 12
bbogue is on a distinguished road
Default Ed's Carburetor Forum

You might try over there if you need a part or 2. I got one that way. I went through my 4100 a couple of times before I learned how susceptible these carbs are to vacuum leaks which can lead to lean running and inability to adjust idle mixture. The trick is to make sure EVERY flat surface that is sealed with a gasket is as flat as possible. Secondary diaphragm cover, power valve cover plate, accelerator pump cover, the body of the carburetor...all flat surfaces. Time/repeated assembly/over-torquing screws can lead to warped surfaces. Some folks use a flat file to repair the surfaces. Whenever possible, I used a piece of 100 grit sandpaper on a flat surface to take out the warpage. I polished my throttle shafts with a brass brush and followed with very fine sandpaper. Care must be exercised on the shafts. They are another common place for vacuum leaks.

Good luck.

Bill
Reply With Quote
  #6  
Old 12-02-2016, 10:09 AM
Yadkin Yadkin is offline
Banned
 
Join Date: Aug 11 2012
Posts: 1,910
Yadkin is on a distinguished road
Default

Quote:
Originally Posted by bbogue View Post
YCare must be exercised on the shafts. They are another common place for vacuum leaks.
Very true. Back in the day my old daily driver had an Autolite 2100. I had so many miles on the car that the brass throttle shaft had ovaled out the linkage side of throttle body. A starving student with no money, I enlarged the outside of the bore slightly to accept an O ring. Then I threaded the end of the shaft to accept a washer and lock nut, and used that to compress and seal the O ring. I drove the car for several years and many more miles after that.
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 12:15 AM.

Driving, racing or working on cars can be hazardous. The procedures and advice on this website including the message board are opinion only. Squarebirds.org and its webmasters and contributors do not guarantee the correctness of the advice and procedures. The Squarebirds.org and its webmasters assume no liability for any damage, fines, punishment, injury or death resulting from following these procedures or advice. If you do not have the skills or tools to repair your car, please consult a professional. By using this site you agree to hold harmless the Squarebirds.org, its authors and its webmasters from any resulting claim and costs that may occur from using the information found on this site.

Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Any submissions to this site and any post on this site becomes property of Squarebirds.org . The webmasters reserve the right to edit and modify any submissions to this site. All material on this is site is copyrighted by the Squarebirds.org. Reproduction by any means other than for personal use is strictly prohibited. Permission to use material on this site can be obtained by contacting the webmasters. Copyright 2002-2016 by Squarebirds.org.