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Author Topic: Restoration project - CB400F 1975.  (Read 2355 times)

Offline jeff4uk

  • Posts: 364
    • 71 triumph T100c
Re: Restoration project - CB400F 1975.
« Reply #10 on: Nov 02, 2016, 16:39:19 »
Nice work mate , my first build was a 400/4. Honda do a parts manual for this bike i found it a real help when seeing where bits went and when ordering stuff . Theres a tappet adjuster Honda do as well its a great help when you come to that point.
And theres David silver spares here in the UK if you cant find what you want there.
Keep up the good work.

Offline jpmobius

  • DTT BOTM WINNER
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  • Posts: 1082
  • where does this go?
Re: Restoration project - CB400F 1975.
« Reply #11 on: Nov 02, 2016, 18:27:24 »
Right - don't seal the tank unless it leaks.  POR-15 works great if it does.  Left bare, it should not continue to degrade as long as good fuel is in it and it gets ridden at least once in a while.  In my experience, most of the time tanks go bad is because they were left to sit for a long time with untreated or alcohol mixed gas in them.  Moisture accumulates in the tank, and being heavier than the fuel sits on the bottom where it rusts and creates pinholes.  Very often a simply dry empty and rusty tank will clean up perfectly.  Phosphoric acid seems to be the preferred miracle cure for most people.  I often use hydrochloric myself because it is virtually instantly effective but it requires very thorough neutralizing (Also MUCH nastier in the first place) which is problematic.
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline kiki.o

  • Posts: 13
Re: Restoration project - CB400F 1975.
« Reply #12 on: Nov 02, 2016, 18:46:38 »
Thanks for the advices, guys... I'll take a look inside the tank with the camera, and see... If it's in decent shape, I'll leave it as is. I can allways do it later if i see that tank starts degrading rapidly.   ;)

Offline haircuttergirl

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  • Posts: 1794
Re: Restoration project - CB400F 1975.
« Reply #13 on: Nov 02, 2016, 18:52:45 »
Welcome to DTT! I have one of these babies, myself. I need to restart the resto process.
Happy to have you here. Looking forward to seeing your progress!

Offline KoŽstom

  • Posts: 538
    • Motion Photos
Re: Restoration project - CB400F 1975.
« Reply #14 on: Nov 03, 2016, 02:32:56 »
Right - don't seal the tank unless it leaks.

Exactly. There is no need to seal unless it leaks or you are killing inline fuel filters with contaminants. When it does start to leak POR15 is great.
Los Gatos, CA
1978 Honda Twinstar cm185cc: The Black Pearl project

1982 Honda GL500 Silverwing Project

Motion Photos On Facebook



'86 Honda VT700, just bought on April 29 '17
Honda z50 (sold)
Honda CB125... the original... long gone :(
Honda cb360 (sold)
Honda cb400f (sold)
Honda cb450 (sold)
Honda cb500t (sold)
Honda cb550 (sold)
'75 Honda cb750 (sold)
'78 Honda cb750 (sold)

Offline kiki.o

  • Posts: 13
Re: Restoration project - CB400F 1975.
« Reply #15 on: Nov 06, 2016, 18:51:44 »
Thank you for support and kind words.

Here is some progress.  Two of the fins on the cylinders were broken, so i had them welded and recreated.






Also made mysef some simple engine stand.

Next step is the painting of the engine and remounting it to the frame. If I'm lucky enough to find some Duplicolor paint here in Europe.

Cheers,
Kristijan

Offline KoŽstom

  • Posts: 538
    • Motion Photos
Re: Restoration project - CB400F 1975.
« Reply #16 on: Nov 08, 2016, 01:35:26 »
Two of the fins on the cylinders were broken, so i had them welded and recreated.

Nice work, and that stand is sweeeeet!
Los Gatos, CA
1978 Honda Twinstar cm185cc: The Black Pearl project

1982 Honda GL500 Silverwing Project

Motion Photos On Facebook



'86 Honda VT700, just bought on April 29 '17
Honda z50 (sold)
Honda CB125... the original... long gone :(
Honda cb360 (sold)
Honda cb400f (sold)
Honda cb450 (sold)
Honda cb500t (sold)
Honda cb550 (sold)
'75 Honda cb750 (sold)
'78 Honda cb750 (sold)

Offline goldy

  • Posts: 374
Re: Restoration project - CB400F 1975.
« Reply #17 on: Feb 10, 2017, 08:30:50 »
Any progress on this bike?
1948 Norton ES2
1954 AJS 20B (project)
1956 Triumph TRW
1968 Triumph T100 special
1969 Norton Commando
1973 XL350 special

Offline kiki.o

  • Posts: 13
Re: Restoration project - CB400F 1975.
« Reply #18 on: Jul 09, 2017, 16:14:43 »
Sorry for late reply.

Unfortunately, I haven't been very active on the forums and in the garage lately, due to my obligations.

Anyway, it's going forward but in small steps.

I have taken the front rotor off, and striped the paint down.




Afterwars, painted it with the Dupli Color  matt black and baked it in the oven.



Also, central stand is lubed and mounted back on the bike. I don't know if I will keep it on once I finish with the assembly, but for now, I'll keep it, since it's a lot easier to work with the bike with the central stand.



Also, triple tree is assembled and new bearings are lubed and mounted.



Also, I have started to assemble the bike back together. I have lubed and put the swingarm on the bike.While I'm in a wait for some of the new parts, i will putty and prepare the tank for the paint. I think I'll paint the letters on the tank and side covers instead of the decals.

Here where's at the moment(with my 4-legged supervisor  ;D )



That's it for now. I hope that this project will progress slightly faster from now on...

Regards, Kristijan

Offline 1fasgsxr

  • Posts: 1127
Re: Restoration project - CB400F 1975.
« Reply #19 on: Jul 09, 2017, 21:46:15 »
Nice work. That thing is going to be a looker !