Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: rough head on September 04, 2017, 02:28:29 PM

Title: exhaust re fitting
Post by: rough head on September 04, 2017, 02:28:29 PM

Ive taken exhausts off toďay to clean and clean and de grease under where they fit, regarding refitting would yanyone reccomend a thin film of exhaust fitting paste or not ? Or are they like a machine fit ?

Title: Re: exhaust re fitting
Post by: Laverda Dave on September 04, 2017, 02:33:32 PM

If you have separated the exhaust headers from the collector or the silencer I would fit a new collar gasket at the joints.  DSS sell these.  Fit new gaskets between the headers and the cylinder head as well.

Title: Re: exhaust re fitting
Post by: rough head on September 04, 2017, 03:25:16 PM

Hi i have spotted and wiggled out the cylinder to exhaust gaskets, they were so coked up didnt spot them cheers, but cant see any remnants of any gaskets for down pipes into silencer one has a pinch bolt to hold firm the rest seem a very snug fit ? Just to say as i didnt previously its a 75 400/4

Title: Re: exhaust re fitting
Post by: rough head on September 04, 2017, 03:36:07 PM

Ok looking online, mine must be an aftermarket exhaust as the four downpipes fit into seperate holes in the silencer ?

Title: Re: exhaust re fitting
Post by: Nurse Julie on September 04, 2017, 04:02:56 PM

The original CB400/4 pipes have 2 alternate downpipes welded to the collector box and the other 2 come away from the collector.

Title: Re: exhaust re fitting
Post by: rough head on September 04, 2017, 04:39:17 PM

Hi yes checked some photos online mine definitely not original, have ordered some cylinder to down pipe gaskets cheers

Title: Re: exhaust re fitting
Post by: Lynx on September 04, 2017, 04:49:32 PM

I put the down pipes into the collector with copper grease, so I can get them out again.

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