Exhaust sealing... options?
Hi Folks,
I'm building a motorcycle up as a project at the moment, it uses a honda c90 lump, the issue is the only exhaust that will fit the frame and has
an exhaust flange that fits the stud pattern is a bit small and weedy.
This isn't a massive problem, as power is not a concern, its just for my little lad to learn on. The problem arrises when I try to get the
smaller OD of the exhaust to sit in the larger OD exhaust port, as it isn't a tight fit (approx 5mm all round) - whilst the flange will hold it
in place fine, I am concerned I will not seal the exhaust very well.
So I'm thinking a large copper crushable washer sat in the exhuaust port, taking out the difference in the OD of port (note the ID of the
port/exhaust is roughly the same, so that isn't a problem) and any slight implerfections on the two faces mating (I have had to rebend the
exhaust a bit to get it to fit).
Are there any other options? Do people agree that the copper washer is a good starting point?
Cheers
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