1.3 K11 Exhaust diameter

[Rob]

My friend has asked me to make him a decat pipe.

Whats the size of the piping to the flange on the catalyst on the 1.3's?

Thanks

Rob

 

[frank]

the downpipe dia rob ? (thats the tightest bore in the system)

 

[Rob]

No sorry the cat underneath.

 

[Rob]

Im wondering whether i can use 2" piping with 2" flanges and if it will fit the standard system.

 

[frank]

so the orifice each end of the cat ?

 

[Rob]

Yeah matey. I assume it must be something like 1.75" standard so hoping a 2 inch flange will still mate up with it and the bolt holes line up,.

 

[frank]

63mm bore, and 105mm pcd, but they,re an oddball angle tho eh

 

[Rob]

63mm is nearly 2.5 inches!?