Help needed - CB350 seat and fuel tank

asypeer

New Member
Hey Guys,
So..I decided to restart the project.
I bought a ready-made cafe-racer seat on eBay. Thinking that it should be OK. It's not..
I want the touch-point between the front edge of the seat and the back edge of the original fuel tank to be as nice as possible. If I'm using the stock locations. It looks bad.
I thought of removing the entire metal piece which holds the back of the tank but then the only thing that will hold it would be the 2 front curves..I need an idea.
I'm attaching the current situation:
The rear edge of the fuel tank
e3u6uruv.jpg


The seat:
duvyjyze.jpg


The look of it now:
u4azapuz.jpg


My desired look from above:
2epetyjy.jpg


The gap I have due to that metal piece..:
vuzemybu.jpg


Thank you for any idea / example!
Cheers,
Assaf



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I assume from the polished finish the seat is an alloy one. Your options are to make a molded extension to the seat and attach it to the existing seat (weld, rivet, small bolts, etc.) and than have a new cover made. Or try your hand at making your own fiber glass seat pan that molds around the end of the tank and make a cover to match.
You could try and notch the front of the existing seat and modify the cover to fit better but I can't tell without seeing the front of the pan with the cover off. It may bring the front down and cover some of the gap while retaining the stock tank mount.
 
grind off the existing bracket on the frame and place one lower and lower the bracket of the tank itself and just secure your tank in place with a bold with a rubber grommet in between

something like this:
k3gQuzO.jpg
 
When you lower the tank, double check the clearance between the acorn nuts on the top of the cylinder, and the tank. Good luck
 
jungalist said:
grind off the existing bracket on the frame and place one lower and lower the bracket of the tank itself and just secure your tank in place with a bold with a rubber grommet in between

something like this:
k3gQuzO.jpg

Should I cut the fuel tank bracket or just grind the frame bracket?


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K4 said:
When you lower the tank, double check the clearance between the acorn nuts on the top of the cylinder, and the tank. Good luck
Thanks for the help.
Do you mean by "acorn nuts" to the round rubber pieces which hold the fuel tank on the front side to the frame?



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Quote from: K4 on Today at 17:01:20
When you lower the tank, double check the clearance between the acorn nuts on the top of the cylinder, and the tank. Good luck
Thanks for the help.
Do you mean by "acorn nuts" to the round rubber pieces which hold the fuel tank on the front side to the frame?

I think he's referring to the cylinder head nuts.
 
K4 said:
Sorry, yes, the cylinder head acorn nuts.

I might have a problem with measuring the gap between the lower part of the fuel tank and the cylinder head since the engine was removed and stored...I'll try to
Ask other cb350k owners to measure the gap.


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asypeer said:
Should I cut the fuel tank bracket or just grind the frame bracket?

both, make a new frame bracket and mount it under the frame rails instead of on top and make a new tank mount and weld it to the old tank mount (so you don't burn holes in your tank) and level it out as low as you want. make sure the tank can't hit the frame rails or anything else when you brutally move it from left to right.
 
I personally don't think the gap looks that bad IMO. If you paint your tank black and your frame black it shouldn't be noticeable at all. I get the look you're going for, and I too like the flush seat/tank reveal but it's not terrible. You could also make a new seat pan (not the actual seat) and have it curve up at the end. Google "cafe racer seat and tank". Ian does a clean sweep up at the front on the majority of his stuff on his site.


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