Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1967 - 1972 F-100 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
LinkBack Thread Tools Search this Thread
  #1 (permalink)  
Old 05-22-2005, 09:53 AM
charliehorse68 charliehorse68 is offline
New User
 
Join Date: Mar 2005
Posts: 11
charliehorse68 is starting off with a positive reputation.
Talking 71 f100 2bbl carb on car

hello all. i purchased a 66 mustang recently and the carb went bad on me.
i ended up using the carb off the old motor out of my 71 f100 on it and it works
great with only a mod to the throttle arm. ( hole on top in mustang carb for
linkage rod in bottam on truck carb). runs great now but seems to use almost twice the gas. i was wondering if the bore in the jets on the 2100 carb from
the truck is bigger, or any other ideas why this may be. i am assuming the
truck carb is a 2100 . it's the original carb. any answers/advice on this would
be greatly appreciated.
Reply With Quote
  #2 (permalink)  
Old 05-22-2005, 10:43 AM
390fe 390fe is offline
Posting Guru
 
Join Date: Jul 1999
Location: Iowa
Posts: 1,359
390fe is starting off with a positive reputation.
Jason Kendrick
The truck carb may very well have bigger jets, but the only way to tell would be to remove the tops of both carbs and compare the jets. The truck carb may also give the engine a bigger squirt of gas from the accelerator pump. It might not hurt to check the plugs to see if the engine is getting the proper air/gas ratio, indicated by a light tan color on the porcelain. This is best done with new plugs. And finally, have you checked for any gas leaks?
__________________
Jason Kendrick
'93 F350 Crewcab 5.8L
'70 F100 Custom 390/C6 (temporarily retired)
'93 Mercury Topaz 2.3L
'99 Ford Windstar SEL (bad transmission - For sale)
Reply With Quote
  #3 (permalink)  
Old 05-22-2005, 12:14 PM
rebocardo rebocardo is offline
Post Fiend
 
Join Date: Jun 2002
Location: Atlanta GA
Posts: 13,873
rebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud of
When was the carb rebuilt? If the carb needs rebuilding and is leaking gas or air, it can easily kill your mileage. My 2150 2bbl was so bad, I went from 6 mpg to 8.5 mpg by putting an adapter on my manifold and bolting on a 4 bbl 600 CFM Holley Street Avenger.

The other thing I would look at is air flow. 66 Mustang is a pretty restricted engine compartment, you might need more air flow for the carb. you bolted on. Did you check the underside of both carbs and make sure the holes for the 2 bbls line up with the holes on the manifold? The 71 probably had an aluminum carb spacer, did you reuse this too?

At any rate, I would put a vacuum guage on it and make sure you are pulling at least 17 and adjust the carb for the engine. If you went from a FE to a 302, I would not be surprised it did not work perfectly without being set up.

Last edited by rebocardo; 05-22-2005 at 12:19 PM.
Reply With Quote
Old 05-22-2005, 12:14 PM
Reply

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1967 - 1972 F-100 & Larger F-Series Trucks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump



All times are GMT -5. The time now is 07:06 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.5.2 ©2010, Crawlability, Inc.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup