Fuel inlet

[Doug&Deb]

Anyone know the thread size on the fuel inlet on the carb doctor’s kit? It’s not the standard size for a 5/16 line. The line from the fuel pump to the carb won’t work. The kit is ck429 for a stromberg bxves-3. 

[Plymouthy Adams]

would not the carb doctor best answer this.....I am not at familiar with his kit even to the point that it could be an oversize thread repair...?????????

[Doug&Deb]

I’ve emailed him. It’s a smaller thread than the 1/2-20 that is normal for a double flared line. I’ll figure something out.

[Plymouthy Adams]

first...is it standard thread into the carburetor.....?  and if so....are you looking just for the flaring nut?  I am assuming this is for the needle/seat 

 

if  you do not  have a thread gauge for metric or SAE  suggest walk in at the big box store and check the premade lines hanging on the rack...could be the new stuff is for metric....

Edited June 26, 2020 by Plymouthy Adams

[Doug&Deb]

Yes it’s the needle and seat. I’ll try after work to see what I can find. I’m running into a space problem. There’s not much room between the carb and the heater box as is. An adapter is going to make it even tighter. Maybe I can find a 90. We’ll see.

[Doug&Deb]

Okay here’s what I found out. The inlet on the needle and seat is 1/8-27 npt. The kit comes with a brass nipple that screws into the inlet and you have to supply a female thread adapter to mate up to the fuel line. The problem is with the 49-52 cars because of the heater box. There just isn’t enough room to make a 90 degree bend. I ended up kinking the line and it leaked when I started the car. I’ve installed a 90 degree male adapter directly into the inlet. Now I just have to make an L shaped line to the pump. That’s tomorrow’s project.