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[martin42]

hi guys,just want to know what the outside diameter of the exhaust pipe is where the back box connects to,as im looking at making my own back box up,thanks in advance 

[Michael2.6]

why make one up when you can buy one

A lot easier than messing about making your own.

[martin42]

i dont want a standard rear box so going to make my own custom rear box and separate rear twin pipes,i like to be different 

[omega3000]

Would like to see that mate , let me know when you work out how your going to fit them . Just a few miles away from you 

[feeutfo]

On the face of it, it does seem strange that somebody capable of making a back box can't measure the outside diameter of the mid sections.

Not aware of the measurement of mine off hand btw, bet be aware not all exhaust makers stick religiously to the exact same sizes. It's not uncommon for one make of back box not to fit another makers mid sections or vice versa, for instance. So in answer to your question you "may" get a size different to yours.

Measure the sizes of the parts your using first hand surely?

[omega3000]

Ive seen some pics but very few with the quad pipe conversion hand made 

[martin42]

i just dont want to go stripping the exhaust down to get a measurment,but ive found out what is today,just wanted it so as i can start ordering all the bends,pipe and boxes so i can then start on making it up when im off in a few weeks 

[omega3000]

i just dont want to go stripping the exhaust down to get a measurment,but ive found out what is today,just wanted it so as i can start ordering all the bends,pipe and boxes so i can then start on making it up when im off in a few weeks 

What boxes did you have in mind for the job 

[martin42]

not sure at the moment,depends where im going to exit the tail pipes and what room ive got.

[hotel21]

i just dont want to go stripping the exhaust down to get a measurment,but ive found out what is today,just wanted it so as i can start ordering all the bends,pipe and boxes so i can then start on making it up when im off in a few weeks 

So.  You asking for the nominal inside dia of the box inlet?  As I recall, the swages in the system are on the box inlets to the nominal larger size and thus the nominal inside dia is the outside dia of the main pipe.  Wouldn't take two mins to measure, either with a vernier caliper or screw manual o/s calipers and a tape measure (or indeed, a fabric tape measure and a bit of schoolboy maths).   

[omega3000]

Might have been someone on here but i did like the look of these ...

 

[martin42]

looks good

[TheBoy]

Might have been someone on here but i did like the look of these ...

 

Yuk.

Strikes me the owner really wished he was a knobjockey and had bought an M5,

[omega3000]

Sounds good though 

http://www.youtube.com/watch?v=2P6TRhbh2wA

 

[feeutfo]

Might have been someone on here but i did like the look of these ...

 

Yuk.

Strikes me the owner really wished he was a knobjockey and had bought an M5,

why would anyone....  Oh never mind.