SOHC.co.uk Forums > CB350/400

Exhausting mystery.

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Athame57:
Where to start? A friend pointed out to me that the silencer on my bike hung suspiciously low. Looking at images on the web I can see it now. The silencer I have was recently identified on this forum as a non standard Thruxton that should be no issue, but I'm beginning to wonder if it was ever meant for a CB400F at all. There is no gasket between the silencer and collector box (is that normal for a Thruxton?) Fitting this system when I take it off is the devils own work, and especially since I got the after market header pipes and collector box, I blamed them but maybe it is really the silencer. Could this be why previous owner down he line never fitted exhaust gaskets in the ports, to make fitting easier? I'm beginning to wonder. Trying to raise it's position has another issue, the bolt that secures it to the rear sub-frame would get in the way of the centre stand, see photo 2 below. The bold slides into the housing on the silencer head first. I see on DSS that the housing for the dual fastenings has captive nuts built in lacking on my single one.

By now I have on my bucket list a DSS pattern silencer, but that isn't sold with the fittings I would need, and I can't find those on the CMSL diagrams either, maybe I just failed to identify them? Whatever, until I know what they look like and have a part number to help me hunt them down there doesn't seem to be a way forward, can anyone help with this?

Coppertop1234:
Hi I just fitted ds repo to my 400 complete system included all brackets
Yes it does look like yours is very low
I can take some pics if it will help out

My muffler has the fittings for a stepped bracket to the rear set with 2 bolts.

exvalvesetdabbler:
Does look to hang a little lower than standard.

The OEM exhaust  also has a rubber stopper to catch the main stand.

Regards
Dave

taysidedragon:
Your non-standard exhaust hanger is too long. A slightly shorter one would lift the silencer to the right position. Also, the standard exhaust bracket has a rubber stop for the centre stand to rest against. Your centre stand is sitting much higher than it would be normally.

exvalvesetdabbler:
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Phone flat on the floor using the selfie camera.  I knew there was a reason for someone inventing the selfie camera

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