CB350 Stock Exhaust header size?

[LuisN]

Hey guys, would anyone know the outside diameter of the Stock headers on a 73 CB350? i took the exhaust off and will just run straight pipes coming off the headers..


thanks in advance!

 

[nukem1r]

Last time I measured mine I believe the od was 1.5 inches

 

[crazypj]

Stock pipe is double wall, actual exhaust pipe is much smaller.
Inch and half pipe is way too big.
If you measure port outlet, it's about inch and quarter. (it's actually smaller at about 1.200")
The exhaust valve is only about an inch diameter
I made a 'step' exhaust with 1.250" and 1.375" mandrel bends, the outlet to silencer is (I think) 1,750"
I think all the pics are in thread in sig below, finished exhaust is on P15