After looking at the 25 carb picture request thread, I think I have a problem with my NH refurbish. My used spray needle that I believe to be part # 6213B-31 swivel type, seems to be too long. The needle part of the assembly is about 2 3/8" long from the pointed tip to the threaded part. After screwing in the needle into 6208B, and into the carb body it is still about 5/16" from touching the part on the swivel that I assume is there to put resistance on the needle to keep it from losing adjustment. What I need is a measurement of a "good" needle from the tip to the start of the threads. Thanks, Dave
I suspect you have installed the earlier "nut" type of friction fitting and not the longer part with a cylindrical extension that the two fingers on the universal swivel grip.
The part #6208B as pictured in the Lang's catalog looks like the one used. Still leaning towards the needle being too long, for some odd reason. Thanks, Dave
Here is a picture of the 2 side by side. The needles are the exact same length but the threaded sections are in different places. Tape is around where the threads end. The T style screws into the carburetor body, the u-joint style screws into the threaded brass but. You can't mix the needles and locknuts but they will work on the same carburetor.
Dave and Corey, The Holley NH, Holley Vaporizer, Simmon's Super Power, and Western Auto Wizard carburetors all used similar looking needle valve. I found this out when I tried to use an NH valve in a Simmons. Check and make sure what you've got; is what you THINK you've got.
outstanding suggestion...you're right, of course, and I never considered that this might be the issue. Dave...be sure to take Terry's advice and double check...
Could be the problem. Had a box of carbs, that I'm trying to make one out of. Still would like to get a measurement to confirm my suspicions. Thanks, Dave
I believe the Kingston needles were longer.
The Simmons needles were like the NH but the steel sharpened section is shorter.