SOHC.co.uk Forums > CB350/400

Fancy a reverse cone mega!

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K2-K6:
If you can centre the outer over the inner, then you could squeeze "instant gasket" silicone sealant into to gap in it's entirety.

This should mould you a bespoke fit spacer/seal to leave until set,  then use the clamp to secure.  It's heat resistant even at exhaust temperatures and should make a durable solution.

ka-ja:
Here we go

Tomb:
Any silicon mastic will do on exhausts, we use it on a Turbo Nitrous race bike without problems, where we need to guarantee no exhaust leaks to maintain boost. But as said, minimise the gap with a spacer, a hand rolled piece of sheet metal will do as long as you are clamping down onto it with the exhaust clamp, the silicon will work.

billdn:
KaJa - nice looking job there! Think I have same silencer.
And thanks all for the advice,  sheet metal and silicone gasket on order as we speak.
Nice to be able to get help from you guys as ever.! :)

ka-ja:
billdn-the reverse cone came with a set of thin steel adapter shims for different diameter exhaust pipes, it was originally intended for old British metal, my intentions were to make the collector box outlet such an diameter that I could fit various silencers for help carb. tuning my Amals.

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