Bing Needle Size

[holeshothawk3]

I am currently rebuilding the stock Bing for my 1972 Six Day and I need to know what size needle I need to order. Bing's website lists about fifteen different options for needles in that carb. If anyone knows the part number for the correct one that would be great!

[Larry Perkins]

2

Larry P

[Larry Perkins]

quote:Originally posted by Larry Perkins

It has 2 lines around it and we always have called it a number 2 but not sure of part number. Hopefully you are using a NEW Needle jet also because they wear and you maybe chasing tails.  273 on that one for me.

Larry P

[holeshothawk3]

The options Bing's website give me to choose from are... 3S1, 4E1, 401, 601, 6G1, 6L1, 8E1, 8H1, 8M1, OB1, 46-291, 46-292, 46-293, 46-293. I'm at a loss on these part numbers.

[Richard]

The part numbers you listed are for the type 84 carburetors. The stock carburetor on a 72 125 Six Day would have been a type 53 carburetor. You might want to call Bing and give them your carburetor number. The number is a stamped number on the intake side of the carburetor. It might look something like 1/27/XXX if it's a type 53 or something like 1/28/XXX if it's a type 84 carburetor. The Bing people are very helpful.

[holeshothawk3]

I'm 98% sure the carb that was on it was a Bing 84. I will double check that tomorrow though.

[Larry Perkins]

That was the hot setup for HP the 84 but never was stock.  The 53 was OEM.

Larry P