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1928 0ne ton, RAKX carb question

 

lou mccarrell
(@lou)
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When I brought this truck home, it ran fine. However, soon thereafter it started occasionally flooding. I discovered the float was incorrect, larger than correct  was rubbing/sticking on inside of bowl. Replaced float, that cured the flooding, but now it wont idle. Discovered the little jet setting sideways on bottom of standpipe housing had no gasket. I need to correct that. I also noted, and here is my question, of the two little jets, the one with the larger hole was on the idle side.....is that correct? One other question, I have found three different specs for the float level. Can anyone tell me the correct one? I suspect the one in the service bulletins would be the correct (don't remember right at the moment what that is, i will need to look it up again). 

Thanks in advance

lou

 

Well, I thought the fellow that had worked on this carb prior to me had got them backwards, but, as far as I can tell, he was correct. From what I could find, the main well jet is #69, (smaller hole) and the auxiliary well jet is #59 (larger hole). While I cannot actually read the size stamped on the jets, this is enough information for me to determine which jet goes where

This topic was modified 2 weeks ago 2 times by lou mccarrell

   
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Rustoholic
(@rustoholic)
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Joined: 34 years ago
Posts: 183
 

@lou, although I cannot tell you about the jets, three years ago I had some problems with Justin's fuel system, so I rebuilt the RAKX-0 carb with a kit from the Filling Station and also refurbished my vacuum tank.

Here's  info about that adventure: https://vccachat.org/ubbthreads.php/topics/458708/fuel-problems-investigation-and-fixes.html

Let us know what your ultimate fixes are.

Cheers, Dean

This post was modified 2 weeks ago by Rustoholic

Dean "Rustoholic" Meltz
San Leandro, CA
3511 posts on vccachat.org
Lurch -1927 LM one ton truck - tinyurl.com/Lurch-VCCACHAT-Gallery
Justin - 1928 AB Canopy Express (1/2 ton truck) - tinyurl.com/Justin-Stovebolt-Gallery


   
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Chip
 Chip
(@chip)
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Posts: 239
 

The correct float level is 31/64". That is the distance with the carburetor upside down between the float and the machined ring around the body where the brass bowl mounts (without the gasket in place). The two small jets have different size threads is so it is obvious which one is in each location. I have rebuilt hundreds of Carter RAKX-0 carburetors.

How sweet the roar of a Chevy four
Participant on Chatter since 11/22/2001
19758 posts on the former Chatter site


   
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lou mccarrell
(@lou)
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Joined: 9 months ago
Posts: 52
Topic starter  

Chip, Dean, thanks for the input, that's a big help. the Donald Duck orange juice can (vac fuel pump) was rebuilt by Chip and working just fine! I didn't notice the difference in threads on the jets, that will be a big help, as will surfing through Deans previous posts on rebuilding the carb. 

Thanks, again, Lou

This post was modified 2 weeks ago by Rustoholic

   
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