what difference Autolite 1100 and 1101 ?

[mustanger59]

This is ma first visite on the forum !
I lives in the north of France and this is my question :
For a Mustang 6 cyl 250 ci of 1969, I would like to replace the carburetor.
- For which model Autolite 1100 or 1101 ?
- What is the difference between the two ? ( base bolt hole centers, intake, main jet, idle jet...)
Do you have a picture to see the difference
Thanks for the help.
Willy

 

[bubba22349]

Welcome Willy,

A spark control valve (SCV) was used on the 1100 to be matched with a Load O Matic (LOD) Distributor for the 1963-67 years. With California Emissions also different but generally no spark control valve means a 1968 or 1969. So with a 69 should have an 1101 it is used with the late and better advance type Distributor. I don't think the exported cars were any different. The Autolite carb should have a number tag attached to it but many times people toss them when doing rebuild if your lucky and its still there it's best way to ID it. Some also have an Engineering / Design Number stamped in the base in front of the Throttle Shaft Arm. Identification can also be by measuring the Ventura Diameter there were three different sizes used for all the Ford Sixes from the 144 to 300 so these could of be changed on a 200 CI engine or be bigger have been used, the largest size of 1.20 inch. The 1969 likely also have larger base bolt hole centers. The Carb Bases are often slotted to fit either of the patterns or its easy to do so, the Autolite 1100 and 1101 look very much alike. Ford’s started to also use the Carter YF carbs around 1970 after all these years parts have been swapped around. The Autolite 1100 last year used was 1967 but it also depends which market area car was built for.….. and the 1101 look's the same except for the SCV is gone.

An Autolite 1100 with SCV and Carter YF looks like this

http://my.imageshack.us/v_images.php

 

[CZLN6]

Howdy Willy:

To add to Bubba's response- The 1100 and the 1101 look very much alike. The easy to spot difference when removed is the throttle bores; 144, 170, & 200s have a 1 7/16" t-bore the 1101s a 1 9/16" t-bore. The 1969 1101 was a one year only carb and unique because it has no Spark Control Valve, but a port for vacuum to the distributor. The 200 1100 is rated at 186 CFM while the '69 1101 is rated at 210 CFM.

Main jetting varied depending on market and other variables like trans type. The only way to be sure is to inspect. They do not have an idle jet. the Idle A/F ratio is determined by an internal oriface restriction and an air screw.

For a '69 Mustang 250, there is no easy, bolt on carb swap for the 1101 The Carter RBS replaced the 1101 in the '70 model year. IT is rated at 215 CFM, but has a different bolt pattern and linkage.

I hope that helps you.

Adios, David

 

[mustanger59]

Thank you for your answers.
It's still not easy to find the right carburetor.
And the translation more !!!!
Thank you

 

[mustanger59]

Thanks to your informations, I checked the carburetor currently monted on my engine: the throttle bore corresponds to a 200 ci...
I would like to find the right carburetor for my engine.
Have you some addresses of suppliers to supply me ?
Thank you
willy

 

[bubba22349]

If you want a new one

http://www.classicinlines.com/products.asp?cat=120

Someone was hunting for a carb to swap on a few weeks back this link is for a rebuilt Carter for a 1970 model. If you don't mind that it's not original for a 69 it would work. Don’t think they have any Autolite 1101 or any carbs for a 68 to 69 listed on the site I wonder why? Some are saying that the Autolite's are getting very hard to find, though have not tried to find one lately.

http://www.summitracing.com/parts/HLY-6 ... refilter=1

 

[mustanger59]

Thanks bubba,
For my 250 ci engine, what du you think of Autolite 1100-1V Vaporizer + carb adaptor ?
But I ask myself, why in applications of this model of carburetor is never done in ref 250 ci engine ?

 

[bubba22349]

For my 250 ci engine, what du you think of Autolite 1100-1V Vaporizer + carb adaptor ?

Is a very good carb is the champ for best in fuel economy! You won't need an adapter for any of the 1V Autolite, Carter, or Holley carbs all are two bolt mounts. Some of the early carb's had closer bolt centers so most you ever need to do is slot the holes a little and maybe open up the manifold center to the large bore. Your 250 should have the wider centers and big bore sure that Vaporizer is made to fit the wide centers most later carbs were slotted and a lot of carb rebuilders use to do it so they only had to carry one carb to fit many apts.

But I ask myself, why in applications of this model of carburetor is never done in ref 250 ci engine ?

I believe it’s mostly because it was first year of the 250 Six's and was also the last for the Autolite Carb's so they could be quite a rare item after this many years. There is little difference inside a carb made for a 200 or to fit on a 250 Carb, the Rebuild kits show settings for each application the carb series was used on. As to why many people swapped over to the later style carbs like Holley and Carter it could be for many reasons, Ford also even stopped supplying them and used the Holley 1940's as the replacements for them others maybe felt it would give them a boost in performance, or maybe was cheaper to buy as a new one, or were easier to find, also some just like a certain brand carbs better. On some Fords in the past say like a 57 Y block you could have it with a 2V or 4 V Holley or Autolite. Good Luck

 

[mustanger59]

Thank you very much for all these details.