carb id

[clemson55]

I was looking at carb rebuild kits online the other day and came to the realization that there are a lot of different ones used. So I'm trying to figure out which carb I have so I dont buy the wrong kit. Heres what I know, I have 2 of these carbs exactly the same. The fj55 they came with is a 1973 neither of them was in the 55 though because it didnt have a useable engine just a mass of parts. The manifolds they are on both fit the f engine I bought though. They are single barrel I think with 2 fuel jets. If there are any numbers or characteristics to help id them let me know and I'll look and post. Thanks
Richard

 

[Landpimp]

its a 2 barrel, 69-71, and if I do recall correctly that is the worst Aisin LC carb made.......
http://www.sor.com/sor/cat042-carbp...retion&descriptionpg.ctx=Page 042 Carburetion

http://www.sor.com/sor/cat042.tam?xax=28372&page.ctx=cat042.tam

 

[clemson55]

Pimp,
Your excessive knowledge of lc's is almost scary but always useful. Thanks

 

[65swb45]

WRONG! 9/69-2/73 have a bellcrank that the accel cable attaches to. 3/73up has a ball stud on the bellcrank that linkage attaches to.

Looks like a 73 to me.

 

[Ground Up]

Plus the fuel return line which I think was only after 3/73. Possibly only on Cali specs.

 

[Landpimp]

right you are I just didn't click far enough

WRONG! 9/69-2/73 have a bellcrank that the accel cable attaches to. 3/73up has a ball stud on the bellcrank that linkage attaches to.

Looks like a 73 to me.

 

[IDave]

So, Mark, which do you think were the worst carbs? I had heard the 3/69-9/69 were the particularly bad uns.

 

[Degnol]

On the top of the carb, above the bowl there is a letter and a number, like "G 3". The letter corresponds to the month G=July and the number to the year 3=73. Most of the carb kits cover from like 70-74 so you should be good for any of those years with the same kit.
GL
Ed

 

[IDave]

What will be the code if it is a 69 or earlier, Ed?

 

[65swb45]

So, Mark, which do you think were the worst carbs? I had heard the 3/69-9/69 were the particularly bad uns.

Those are the worst ones Dave. Also not too fond of the 79-80. They literally built that one backwards, putting the secondary venturi on the primary side, and visa versa, because they knew that will all the smog crap, there was a damn little chance that you'd ever get the secondaries to kick in. I have still had good luck modifying them without changing the venturi so that they will have more power and still pass emissions.

I remember rebuilding one of those 79-80s for a customer about 12 years ago, and the customer called the next day to tell me his mechanic said I assembled the carb backwards. I invited him and his mechanic to come visit the shop and look at all the other 79-80 cores in the back that were all set up that way. He didn't take me up on my offer. :whoops:

 

[dd113]

Those are the worst ones Dave. Also not too fond of the 79-80. They literally built that one backwards, putting the secondary venturi on the primary side, and visa versa, because they knew that will all the smog crap, there was a damn little chance that you'd ever get the secondaries to kick in. I have still had good luck modifying them without changing the venturi so that they will have more power and still pass emissions.

I remember rebuilding one of those 79-80s for a customer about 12 years ago, and the customer called the next day to tell me his mechanic said I assembled the carb backwards. I invited him and his mechanic to come visit the shop and look at all the other 79-80 cores in the back that were all set up that way. He didn't take me up on my offer. :whoops:

I have first hand evidence of what Mark can do with a '79 carb! Cut your losses and send it off.