Quote:
Originally Posted by Dukedesmo
Both my M900 and 916 have spring connected exhausts throughout.
The M900 as it is an aftermarket setup and 916 are like that from the factory. The benefits IMO are that there is room for movement/expansion.
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Yes, I thought I remembered seeing it on at least one of your bikes.
Do they both use the same (relatively hard) copper/asbestos gaskets as the clamped-up system ?
And do the pipes have a flange at the end or is the joint at the heads made using just the square-cut pipe ends ?
Tbh, the ends of the Sil headers didn't look to be cut entirely square, against my engineer's set-square.
Not quite sure on the movement/expansion thing.
I see what you're saying but I'm not sure whether flexibility .. at the heads .. is the way to go.
I think I might prefer to focus on flexibility in the rearmost sections of the pipe, rather than the front.
Also, having seen the deteriorated state of the used springs which came with the system (which had stretched and bent their hooks) I'm not sure that I would rate springs as a reliable way of providing consistent "clamping force" at the head gasket.
Thanks for the reply .. all very useful stuff and definitely food for thought.