hello , just bought a backbox for my mk1 punto 55, and it has a 60mm entry into the back of the box, but my exhaust pipe itself is much thinner, does anybody know the diameter of the pipe? or does anyone know where i would get a pipe to convert this, thanks!

cant you measure it? Take it to an exhaust place and they'll put a reducer on it for you

measuring it would mean chopping it in half to get an acurate measurement and then ive got no back box lol, i was hoping to fit it myself but maby a proffesional is in order

unless you know a mate with a welder, then youl need to get it done professionally.
usually when i do things like this, i wrap a small peice of mild steel around the joint, then fill the entire thing with weld. its never pretty, but it works, and thats what you get for compromising
also, im lucky in that i have a workshop to play around in

rhyspunto said:

measuring it would mean chopping it in half to get an acurate measurement and then ive got no back box lol, i was hoping to fit it myself but maby a proffesional is in order

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No it doesn't.

1. Get a piece of string and put it round the tube marking the circumference of the tube
2. Measure the length giving you the circumference
3. Apply the following formula:

(Where C = circumference and d = the diameter of the tube)

C = Pi x d

Example; where C = 200mm

200 3.14159 = d
d = 63mm

You learn this stuff when your 12