Lead pipe sizes

What are the standard lead pipe diameters around the 4 inch mark? I ask cause I have 2 pipes. One I cut and put a 4" boot to convert to PVC. The other I did not do just yet cause it looks slightly smaller that the first. did a circumference test and it is definitely smaller that the first. Seems like 2 inch cir difference. Afraid the 4" boot will be too loose. house is from the 50's

Thanks

Putting a rubber coupling on lead is not a good idea.You need to cut back to the solid pipe then go from there.Is it C.I. or copper that the lead is connected to?

lead

Lead is not a good candidater for a compression joint because it CAN compress. Even the brass ferrule that the lead is soldered to is tapered so it should also be removed and the connection made differently.

hj said:

Lead is not a good candidater for a compression joint because it CAN compress. Even the brass ferrule that the lead is soldered to is tapered so it should also be removed and the connection made differently.

Click to expand...

Forgot to mention the brass ferrule.Need to go back to the best section of pipe.
Be it C.I. or copper.They where using DWV copper in the 50`s

bend

I doubt, and have never seen, a lead closet bend used with a copper DWV system.