I collected the raw tubes earlier in the week, which is enough for 4 pieces, but still looking for somebody to do the smaller pipes that the downpipes fit into. This means I can start the 2-1 and outlet bend assembly, but obviously I really need to start at the front first, so these down pipe bends are a bit of a nuisance.


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This is the start of a CAD model which is based on my prototype collector, and this drawing is my way of working out what angle & length mandrel bends I need to fabricate a 4-2-1 collector to replace the catalytic converter. The front pipe merge collectors are well sorted, just got to do a little more work on two of the three remaining bends.

Looks ever more promising, as I have found a mandrel bender near me too.