Bore Size Of Standard Exhaust

[fiji bob 0]

does anyone know what it is?

[pug_ham 240 3 Cars]

AFAIK after the manifold downpipe ends it is about 48mm on the early three piece system & apparently the later two piece system got a slight increase in bore but it made no performance difference.

 

edit; The group N system I have has a 48mm diameter centre pipe (internal bore)

 

HTH.

 

Graham.

Edited October 21, 2003 by pugtorque

[NickR 10]

51mm ID on the later systems.