So, I’ve completed the first 3-D printed prototype exhaust pipe. Every straight and bend is taken from an off-the-shelf exhaust part supplied by Alunox. This means if the 3-D printed parts fit then the exhaust as I make it should fit just as well.
![](https://i2.wp.com/www.furyrebuild.co.uk/wp-content/uploads/2020/05/renderedcontent-3873ca04-ce41-4947-adb4-a9cfecbfa3b7.jpg?resize=584%2C438)
So, I’ve completed the first 3-D printed prototype exhaust pipe. Every straight and bend is taken from an off-the-shelf exhaust part supplied by Alunox. This means if the 3-D printed parts fit then the exhaust as I make it should fit just as well.
Is 4-2-1 the optimal for the Duratec?
are you drawing this all on on Fusion 360 first?
Hi David. I’ve bought the dimensions from SBD and they recommend 4->2->1, so I’m going with that. I’ve been using Onshape. It works brilliantly on my iPad with the pencil. I can’t recommend it enough.