another cb350 project: le pere noir

liam

1970 cb350/1980 xs250/2004 klx400/BMW E30 323I
hi guys, i'm liam, from melbourne, australia.
i've always had a bit of a soft spot for stripped back vintage racing cars and bikes.
i like the look of this sort of thing, brutal and utilitarian, which is the kind of long term aim, but it's hard to make a 350 look menacing...not my bike btw, just one i saw on the street.
PB180236.jpg

i figured a sort of scrambler look would work ok. the new triumph scrambleris pretty impressive, so i took a few cue's from that
i've been following mysta2 and chrisf's projects, and getting the hang of what was possible. (a lot is possible :) )
i picked up a cb350 off ebay in november, never owned a motorbike before, but figured it was best to start with one that there was a lot of information on converting and restoring.
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not running when i picked it up, and alot more rust then can be seen in the picture, plus loads of corrosion on the aluminum.
put some fuel in it, wouldn't ignite, tried roll starting it down a hill, turned over, coughed a bit, no joy.
i got a new battery, whacked it in and replaced the only fuse in the bike, all the electrics worked, which was a big relief. electric starter works, engine starts, but only runs at full throttle. (by this stage i'd had it for a month and had cut the exhausts down and removed the baffles because i knew i'd need new ones anyway) so it was really loud!
i took this as a good sign, it was a big relief to hear any sound at all.
next stage, stripped the bike down, drained the oil from the engine, found lots of little chunks of hard rubber in the oil, which i believe from what i've read is the cam chain tensioner somethings? most probably. i'm thinking this would mess up the timing, which might be why it would only run at full throttle
anyway, i pulled everything off, painted the frame,
prepped,painted and striped the tank in white and black, spring covers etc black. they all still need to be finely sanded and then buffed, because theres a couple of drips on the tank, but i won't finish them off, because i know i'll scratch them as soon as i do...
here it is now
mybike.jpg

the seat has been dismantled, an the seat pan narrowed along the sides, and some foam skimmed of the top, with the cover not attached yet, hence the wrinkles. i want to replace the tailight with this kind of british one,
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at the moment its a pretty straight mods, but after then engine is fixed and the bike is registered, it'll get some slightly less legal mods. i'm a little concerned about being able to register it if it's too far from stock.
in the long term, a disc front end swap, one of the longer chrome headlights, a big tank, maybe a ducati monster one, something with lots of angles like a norton manx anyway. i quite like the traditional flat seat look, so i think a slither thin padded leather one would be cool. oh yeah, the battery should probablt be moved as well, i was thinking of putting it inside a bigger tank, at the rear, maybe a hinged tank. the stock filters have been swapped for pods. i think i've spent about $250 on top of purchase price, but i still need new cables, seals, front tyre, rear shocks etc.
so anyway, in the pictures it doesn't look that impressive, but it's been a great learning curve for me, and i've had a great time pulling stuff apart. now for the engine, a little more complicated i imagine.
anyone else from melbourne around?
cheers
Liam
 
Hey, welcome!

Not from Melbourne but I wanted to chime in and give some kudo's.

Like what you did with the stock-style paintjob - keep the progress pics commin!
 
i though about it for a while, and figured honda knew what they were doing when they painted the tanks in two colours. it makes it look a bit bigger, and every little bit helps.
 
Hi Liam:

Great work you're doing there. I look forward to following along with your progress.

--Thanks, Chris
 
Good start. Don't see too many 70 CB350s around. That Lucas style tail light works well with a fender trim on the 350. I have one on mine:

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Keep us posted with your progress.
 
Dr. J,

Are those the 11" short shocks on there? How much did you raise the forks through the crowns to match? Do you have a side profile shot? I'm not sure I've seen your 350 before on here.

- Woody

P.S. Sorry for the hijack.

DrJ said:
 
and you've got a 2-1 exhaust? what muffler are you using? anything special?

the tailight looks pretty good, like how i figured it would look.
i'll chop the guard after i get it registered. did you roll the edge or leave it?
i was also wondering with the stockfront fender, does it need the struts for structural integrity?
i was going to leave the front strut off, and maybe trim the front and back of the fender a little shorter, to make it a little more appealing, but still practical
 
woody1981 said:
Dr. J,

Are those the 11" short shocks on there? How much did you raise the forks through the crowns to match? Do you have a side profile shot? I'm not sure I've seen your 350 before on here.

- Woody

P.S. Sorry for the hijack.

Yes, those are the 11" shorties and I raised the forks 1 1/2". Here are a couple more shots:

n631952673_506720_4219.jpg


n631952673_506721_4596.jpg
 
liam said:
and you've got a 2-1 exhaust? what muffler are you using? anything special?

the tailight looks pretty good, like how i figured it would look.
i'll chop the guard after i get it registered. did you roll the edge or leave it?
i was also wondering with the stockfront fender, does it need the struts for structural integrity?
i was going to leave the front strut off, and maybe trim the front and back of the fender a little shorter, to make it a little more appealing, but still practical

That's a vintage Hooker 2-1 header and muffler. About half the weight of the original exhaust and sounds much better. I wrapped the headers and had a muffler cap custom made from machined aluminum. No I didn't roll the fender edge. No the front fender struts provide no significant strength to the forks so you can discard them without losing any structural integrity.
 
DrJ said:
That's a vintage Hooker 2-1 header and muffler. About half the weight of the original exhaust and sounds much better. I wrapped the headers and had a muffler cap custom made from machined aluminum. No I didn't roll the fender edge. No the front fender struts provide no significant strength to the forks so you can discard them without losing any structural integrity.

The question DrJ is... Are we gonna see it out this season??... I didnt see it out once last season!!
 
all the cb's I come across are rusted,which in turn, I chuck all of the running gear etc.etc. nice to see one with a original tank and a hooker header,,,,,,sweet ride!!!!!!!!!
 
i've been pretty slack on this bike. (lack of) cash flow has been cramping my style.
the seat looks really good now it's been stapled. it's now the same width as the chassis rails it rests on, so it looks alot lighter and narrower.
i bought a wipac bantam light off ebay, looks like this
rearlightbantam.jpg

and gonna mate it to a nice chrome fender off a 85 z250, cut down the stock light mount and bend some tabs so it will mount lower down on the fender. it should work fine, and i've got two to try it with, as the new fender has a similar mount to the one i've got on it now. should definitely be better then the stock one, and the taillight looks like a little rocket, pretty cool. plus the fender should lose a couple of kg's because it only comes out the back, i guess i'll either replace the piece under the seat with aluminium sheet or a plastic one.

i've got a workshop manual, which makes things a little easier.
pulling the oil filter cover off was a pain. the heads were all shredded, so i got some easy outs, but the screw heads just twisted off. i levered the cover off, and it just cracked into pieces, so now i've got to find a new cover, and possibly a new side cover if i can't get the remainder of the bolts out easily. and if i'm sourcing all that i may as well get another lower casing, to replace the one with the cracked mount... :( it's a pain.
i'm getting tempted to get the engine bored out while it's all in pieces, because it looks like it might be this way for another couple of months. i have no idea of the practicalities, but i'm feeling like a bigger payoff for all the annoying things that keep slowing me down would be nice.

i was wondering how hard it is to make a henning style slipper cam tensioner. it's basically a couple of pieces of alloy and a heat proof rubberstrip or wheels or something? it might be a fun project, if someone had some pictures of one, or measurements.
oh yeah, replaced all the cables, bought a new blinker flasher, that seems to be the wrong size.
i'll post some picures of this fender on the bike, in the next couple of days, after i get it cut down.
and in the meantime i'll be reading all the forums, keeping me interested/distracted, even when i should be doing work.
 
I really like where you're heading with this project, in particular your paint scheme. I had something similar planned for my '68 CL350 tank (same style), except I was going to contrast gloss black with satin black. Yours is looking really good, I'll keep watching.
 
here we go. a sticky tape mockup. i think for the moment i'm going to keep the stock light mount off this new fender, it's a little smaller then the cb one. now i can use the old fender mount holes to run my indicators through, which is perfect. i just have to work out how to get the seat to open with the fender on, because the light gets in the way.

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P3270058.jpg
 
flipprboi said:
Mahn 350s are coming out ! Absolute Coolness ! :) Makes me wan to post our CB350 project too.

-benjie

why dont you?
Id love to see how that project is coming along!
 
i got a bit sick of working on the engine, and wanted to do some design so i started to mess around with a blank for a fiberglass tank shell. working on some proportions and dimensions. the plan is to drop it over the top of the original tank, and use it to cover the battery, and give it that vintage racing vibe, i know it doesn't serve any functional purpose, but it will sure look the part. the important thing is being able to fit everything under it, and have good ergonomics, and be symmetrical. it doesn't have quite the flowing lines that i was aiming for, but i'll work on it more. it looks massive off the bike, but once it's on it, much more normal.

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i'm gonna take some cue's from this seat
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