Rebuilding Carbs on a 79'

[neJeff]

These things are giving me fits. Twisted off two rails in disassembly, twisted off one main jet and lost another pilot jet ( it got away from me). Dirtiest set I have ever seen. Can someone tell me what the main & pilot size is? Also is there not suppose to be a o-ring and washer on the mixture screws or is it a tapered fit or what? I'll probably have more questions...thanks in advance

[mack]

79 carbs

mains are 137.5 pilots are 42.5. No o ring and washer, just a spring.Yes sort of on the taper fit.

[neJeff]

mains are 137.5 pilots are 42.5. No o ring and washer, just a spring.Yes sort of on the taper fit.

Thank you very much, now to find me a couple of jets. I can't even read the 42.5 with a magnifying glass, where is it marked?

[motoman]

Thank you very much, now to find me a couple of jets. I can't even read the 42.5 with a magnifying glass, where is it marked?

Located on the side of pilot jet. Magnifying glass would likely be needed in order to read it.

[neJeff]

Located on the side of pilot jet. Magnifying glass would likely be needed in order to read it.

Had to drill out the last pilot jet. Luckily I found that I had a couple of 42.5's to replace this one and the one I lost. Going to order a 137.5 main.

Anyone happen to know what the tap size for the pilot is? Going to run in through and make sure threads are good. I can figure it out tomorrow if no one knows off hand