Thermo quad 6138s ?

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flathead31coupe

flathead31coupe

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Can someone tell me if the choke rod and pieces, as well as the fuel pump rod from other tq carburetors are interchangeable... also, does anyone have a picture of a 6138s factory carburetor from both sides.So I can tell what's missing on mine.Thanks.
 
GTX JOHN said:
On some other Thermos it is. The accelerator pump arrangement
is somewhat different on most later carbs.
Click to expand...
I looked at a few pictures like the ones I have and it looks like the celerator pump rod is different... On the one I have compared to the ones online.I was curious.I have a few that look like they have the correct rod but i'm not sure... As well as the choke pull off and linkages and things.
 
The later TQs have a different casting on the airhorn for the acc pump lever. The casting sticks out further towards the front & the lever used for these is also different. Distance from the pivot to the hole where the 'S' link goes is longer. I believe the connecting rod is also different. The pump plungers are the SAME.
 
This is what I have currently.It is still missing a few pieces.. The second set of pictures is wanna have lane around.Thought I could use some of the.
Choke pieces.... But not sure.

20240921_173316.jpg


20240921_173309.jpg


20240921_173258.jpg


20240921_173246.jpg
 
I'm not sure if it makes a difference or not.But I am not planning on using a choke.. .. Also had a different question, i read that one of the difference being the 6138s is for a 4 speed 340 carb that it has a is richend idle circuit witch allows the carburetor to come to an idle slower for a four speed.. Can someone explain, is it that noticeable when you are at an idle and reving it up and letting it come to an idle
 
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