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Author Topic: Restoration project - CB400F 1975.  (Read 2624 times)

Offline kiki.o

  • Posts: 13
Restoration project - CB400F 1975.
« on: Oct 14, 2016, 17:01:14 »
Hi to all,

I have been loorking around this forum for quite some time now, but I haven't registered until I have started my own project.

I have purchased the CB400F in rather poor state, but all original parts were there an it was a good base for what I hoped will become a Cafe racer project. But somewhere down the stripdown process, where I have seen the real state of the original parts, I have chose to make an restoration of the bike. So here I am, starting this thread to show my progress and to gather some useful tips and advices during the process.

Here's the bike when i brought it  home:


Frame and other bits were powder coated, so I started with reassembly.


Seat lock repainted, and reasambled.




Fuel tank paint stripped down








Fuel tank had a dent on left side, so it was sorted out. Next job is to clean and seal interior of the fuel tank. Anyone had any experience with POR15?



I have started to clean the carburetors, which were in horrible state from the outside, on the inside only one was in poor condition, and will need new float and jets.


Spring cleaned


That's it for now. Progress is slow but I hope that I'll have project finished by next riding seaon.

Regards,
Kristijan

Offline yorkie350

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Re: Restoration project - CB400F 1975.
« Reply #1 on: Oct 14, 2016, 17:18:24 »
Welcome in mate you chose well for a first bike resto ya cant beat these little gems for a project. Get hold of a manual take pics as you go make notes and enjoy the process and most of all make her yours! always here for Q&A's ideas .
Life's too short to go slow at anything !  unless your re-building ya ride !!

 cb350f '72 café racer 
 cb550f '78 Hailwood race rep

Offline kiki.o

  • Posts: 13
Re: Restoration project - CB400F 1975.
« Reply #2 on: Oct 15, 2016, 08:45:30 »
Thank you for kind words.

I do have a question though.... Engine painting. Is it better option to do it while it's in one piece, or to disassmble and to paint part by part?

K.

Offline yorkie350

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Re: Restoration project - CB400F 1975.
« Reply #3 on: Oct 15, 2016, 15:46:14 »
I usually take all the covers and ancillary pieces off then spray as a block mate its easier and saves on masking up also if the motor doesn't need stripping down for mechanical reasons I wouldn't strip down just for paint it would up the cost of painting for all the new gaskets etc ,less chance of making a mess putting back together too, sure others will have different ideas but that works for me .
« Last Edit: Oct 15, 2016, 15:49:40 by yorkie350 »
Life's too short to go slow at anything !  unless your re-building ya ride !!

 cb350f '72 café racer 
 cb550f '78 Hailwood race rep

Offline advCo

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Re: Restoration project - CB400F 1975.
« Reply #4 on: Oct 16, 2016, 23:17:07 »
 POR15 works great just be sure to prep it well use phosphoric acid to derust and etch then rinse with denatured alcohol before coating.


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Offline slikwilli420

  • Posts: 166
Re: Restoration project - CB400F 1975.
« Reply #5 on: Oct 16, 2016, 23:32:34 »
If the tank is good inside why coat it? Keep it full of gas and use sea foam or similar to keep the ethanol issue minimal.

Offline tattoo

  • Posts: 145
Re: Restoration project - CB400F 1975.
« Reply #6 on: Oct 18, 2016, 08:36:13 »
That's certainly a great looking starting point for any project!!!  Cool little bike...subscribed.

Offline JustinLonghorn

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Re: Restoration project - CB400F 1975.
« Reply #7 on: Oct 18, 2016, 09:05:50 »
I'm on board.
I'm going to eat your brains and gain your knowledge.

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TT500 the Animal

Online Maritime

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Re: Restoration project - CB400F 1975.
« Reply #8 on: Oct 18, 2016, 09:07:34 »
Nice start. love the 400F!
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Offline kiki.o

  • Posts: 13
Re: Restoration project - CB400F 1975.
« Reply #9 on: Oct 18, 2016, 18:08:32 »
Thank you for encouragement.  8)

I was thinking about the POR15 because it will postpone(and maybe eliminate) rusting of the tank. Inside job even now isn't too good, so I think that any additional protection would be better option in the long run.

I have had carburetor parts polished. The exhaust flanges were chromed.









That's about it so far.  I need to have carburetor bodies soda blasted so I can start an assembly.

K.