Show Posts
2611
Project Board / Re: CB350F Restoration by royhall
« on: October 24, 2015, 08:43:11 AM »
I could leave it green Bryan, but that would stir the wrath of the rivet counters. So shiny black it's going to be.
Whilst I sort out the headlamp shell, I thought I would have a go at the exhausts. If you remember from earlier in this sorry tale, due to the very poor standard of the original Sankei exhausts the system I ended up with is a 4 into 4 made by MIVV in Italy (discontinued 5 years ago). The kit included 4 header pipes, 4 silencers, 4 tube clamps, and a rubber stopper for the centre stand. All as in the picture.
[ Guests cannot view attachments ]
According to the instructions the silencers are mounted first on the rear footrest mounts, then the header pipes slide into the silencer and are bolted up. Sounds really simple, unfortunately as is the case with pattern parts its never that easy. Firstly the header pipes are not identified so its anyones guess which pipe goes to which cylinder. That took a lot of experimenting to sort out. When I offered up the first header pipe this is what I found.
[ Guests cannot view attachments ]
Yes, your seeing that right. A system made for the CB350F and costing £700 you have to finish off yourself. All four pipes are way too long and needed cutting down to suit.
Two of the pipes have a short bend on the silencer end that had to be cut off (no idea why that bend was there) almost like they were made for another bike and just thrown into the the kit as they are near enough? All fairly poor really, pattern parts yet again. This is what had to be cut off across the 4 pipes (note the bends that were cut off). Another thing I noticed is whilst cutting the pipes (hacksaw) the chrome was flaking. They have been chromed directly onto the steel. Guess they will be coming off again at some point to be re-chromed.
[ Guests cannot view attachments ]
With lots of time and patience, and a whole lot of measuring and taking on and off, I finally got all four pipes on and looking okay.
[ Guests cannot view attachments ]
I then managed to find a fault on one of the silencers that I previously had missed. The black end cap on the lower left silencer is missing (never been fitted at the factory, so much for quality control).
Not sure how to get over this problem as its a pressed steel part that will be hard to replicate. Tried emailing MIVV who did reply quickly, but to say it had been discontinued for five years and they had disposed of all the remaining parts.
I'm thinking these were still available after 5 years as they were seconds? If that's the case they should really say so.
I have contacted the German supplier (named earlier in this thread) and they think I may have been supplied with CB500/550 headers by mistake. That would make sense. They are also searching the stores to try to find an end cap for the silencer as they used to keep them. So there's still hope for an easy fix. Looks like the header pipes are not made by MIVV (just the silencers), this could be correct as the quality of the silencers is way better than the headers (except for the end cap obviously).
[ Guests cannot view attachments ]
I will sort it out somehow, it needs a bit of thought so I will leave that for now. When I think back, I only decided to do a CB350F as exhausts were readily available. That came back and bit me I think
.
Next job is to finish the headlamp shell and get it fitted. Then on with the handlebars and on to the bit I dread, the bowl of spaghetti that is the wiring in the headlight.
I am up to date now. More to follow.
PS. Just discovered that the centre stand completely misses the rubber stop and slams into the silencer. No damage done, but another unnecessary job to find a way around.
Whilst I sort out the headlamp shell, I thought I would have a go at the exhausts. If you remember from earlier in this sorry tale, due to the very poor standard of the original Sankei exhausts the system I ended up with is a 4 into 4 made by MIVV in Italy (discontinued 5 years ago). The kit included 4 header pipes, 4 silencers, 4 tube clamps, and a rubber stopper for the centre stand. All as in the picture.
[ Guests cannot view attachments ]
According to the instructions the silencers are mounted first on the rear footrest mounts, then the header pipes slide into the silencer and are bolted up. Sounds really simple, unfortunately as is the case with pattern parts its never that easy. Firstly the header pipes are not identified so its anyones guess which pipe goes to which cylinder. That took a lot of experimenting to sort out. When I offered up the first header pipe this is what I found.
[ Guests cannot view attachments ]
Yes, your seeing that right. A system made for the CB350F and costing £700 you have to finish off yourself. All four pipes are way too long and needed cutting down to suit.
Two of the pipes have a short bend on the silencer end that had to be cut off (no idea why that bend was there) almost like they were made for another bike and just thrown into the the kit as they are near enough? All fairly poor really, pattern parts yet again. This is what had to be cut off across the 4 pipes (note the bends that were cut off). Another thing I noticed is whilst cutting the pipes (hacksaw) the chrome was flaking. They have been chromed directly onto the steel. Guess they will be coming off again at some point to be re-chromed.
[ Guests cannot view attachments ]
With lots of time and patience, and a whole lot of measuring and taking on and off, I finally got all four pipes on and looking okay.
[ Guests cannot view attachments ]
I then managed to find a fault on one of the silencers that I previously had missed. The black end cap on the lower left silencer is missing (never been fitted at the factory, so much for quality control).
Not sure how to get over this problem as its a pressed steel part that will be hard to replicate. Tried emailing MIVV who did reply quickly, but to say it had been discontinued for five years and they had disposed of all the remaining parts.
I'm thinking these were still available after 5 years as they were seconds? If that's the case they should really say so.
I have contacted the German supplier (named earlier in this thread) and they think I may have been supplied with CB500/550 headers by mistake. That would make sense. They are also searching the stores to try to find an end cap for the silencer as they used to keep them. So there's still hope for an easy fix. Looks like the header pipes are not made by MIVV (just the silencers), this could be correct as the quality of the silencers is way better than the headers (except for the end cap obviously).
[ Guests cannot view attachments ]
I will sort it out somehow, it needs a bit of thought so I will leave that for now. When I think back, I only decided to do a CB350F as exhausts were readily available. That came back and bit me I think
.Next job is to finish the headlamp shell and get it fitted. Then on with the handlebars and on to the bit I dread, the bowl of spaghetti that is the wiring in the headlight.
I am up to date now. More to follow.
PS. Just discovered that the centre stand completely misses the rubber stop and slams into the silencer. No damage done, but another unnecessary job to find a way around.
