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Genuine 377 exhaust system

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Orcade-Ian:
Hi folks,
Way back in 2002 I bought a full brand new 377 system from Mr Silver (when they were cheap!)
It came in a partially assembled state with the silencer clamped loosely to the header unit but the two loose pipes and seals/clamps were wrapped separately.  Now I’ve cleared some space, I intend to assemble the other 400/4 and use this exhaust system.  I thought I would separate the silencer from the headers and when I slackened the clamp bolt it moved a few turns then started to bind up.  On much closer inspection it appears that the bolt goes through the nut and then into a threaded collar acting as a locknut.
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 This has then been peened over to prevent removal.
It’s not a problem as I’ve now sliced the peened over end off and removed the bits so it’s easier to man handle.

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After all that, my simple question is: was that normal practice on complete systems back in the day?

Ian

kent400:
I have a new one as supplied by Honda in a bloody great L shaped box. They were supplied with the collector and the two fixed down pipes. David Silver added the two loose pipes to make the complete system and that's how he sold them. Made sense really as I can't see anyone would use their original down pipes.

Orcade-Ian:
Hi Kent400
Has your new one got that locking piece on the end of the silencer clamp bolt as well? That was the bit I was surprised at, the peening over was at just one angle rather than all round and appears to have been done on a press.  The silver paint looks to have been put on by hand and not good quality.

Ian

AshimotoK0:
This one was new in about 1986 ..the complete system was about £100 then as Honda had slashed their exhaust prices in some sort of promotion BUT the extra clamps were not part of the promo  and were still a ripoff price. Unused but fitted to bike and was in barn for 15 years ..if you look closely there is still a bit of straw on it . Silver paint is as applied by SANKEI (Honda OEM) . There was some on thewelds of the collector box too. :) BTW ..don't buy the Yamiya one it's exactly the same as DS version and made in UK by Brituro...but a lot of money landed here !


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Orcade-Ian:
Hi Ash,
Thanks for the info and the pic clearly showing the locking sleeve nut.  I suppose the arrangement was to allow the silencer to move during fitting but not able to fall off the headers if slackened too much.  Mine has Sankei 2002 stamped underneath but I’ve been thinking I bought it before that, do you know if the 2002 is actually the manuf. date or just an ident number?  If my memory is right I think the whole system was around £150
Incidentally you mentioned D L Barr in a previous post - old Don Barr did lots of jobs for me back in the day such as MK2 Jag seats, vinyl roofs and bike seats, I was really pleased that they are still trading.

Ian

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