Exhaust diameter

[gazza_no7]

Going to look at a 1.2L corsa b tomorrow and i am wondering what the internal diameter of the backbox is as i have a 3" sportex in my garage that i want to fit to it. The ID of that is 2" is this the correct size for it?

Thanks!

[johnny]

Think the pipe is the same diamiter as the 1.0 its just the way it runs down the car is different

[gazza_no7]

I thought the 1.0 was completely different to the 1.2, 1.4, 1.6 as they are the same?

[johnny]

Quick mwasure of mine i got 45-50 mm diamiter i think its just the way the exhaust runs and the length of the mid pipe is different and goes over the back axle differently aswell

[gazza_no7]

yeah i think it is 2" pipe then! as the 1.0 is 1.75" pipe! Thanks mate

[johnny]

If i get a chance tomorrow ill look it up on the computer and get the exact size of each, because 45 would be 1.75 and 50 is 2

[johnny]

Never got round to check today mate was to busy will definitly find out tomorrow

[gazza_no7]

Don't worry about it mate! Think I've sorted it can I use silicone sealant instead of exhaust putty to seal the joints? As I never seem to get a gas tight seal...

[johnny]

Exhauast diamiter is exact same for 1 and 1.2 there just different lengths

Im not sure about silicone dont think its heat prof tbh