Author Topic: 1976 CB550F1 (what have I let myself in for) Project  (Read 2128 times)

Offline Rob62

  • SOHC Pro
  • Posts: 733
  • ZZR1100D9, CB750K4, RD250F, NSR250MC21, C90ZZ
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #30 on: February 04, 2019, 06:13:49 PM »
Good progress.... spring’s coming  8)

Offline eight0

  • SOHC Associate
  • Posts: 79
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #31 on: February 18, 2019, 02:06:36 PM »
A bit of progress over the last 2 weeks.
Got the engine running and idling smoothly. I tried to take a video but my phone battery died before it saved! I had done the bench sync incorrectly but after re-reading the process I got it in the end. Put some vacuum gauges on them and they were pretty close.

Removed electrics - all going in the bin.
Removed the shocks and triple tree - the fork tubes are in bad condition. I'll either need to re-chrome them or source replacements.
Removed the rear wheel - one of the wheel spacers was missing and had been replaced with..... 3 Nuts!
and finally got the engine out. I layed the frame on its side and got it out that way. Was hard work by myself but I got there in the end.

The engine cosmetically is pretty bad. I'd like to re-paint it but I've read in many forums its not good to paint an assembled engine (shouldn't paint over gaskets and bolts and you can never get it fully clean).
I emailed a couple of blasting companies but they all said they wouldn't touch an assembled engine.

Leaves me with a couple of options.. Do a top end rebuild and get the head, barrels and cover blasted in the process - then do my best to clean and repaint the case assembled

Or completely strip the engine and get it done properly.

I think I'm going to do a top end anyway, I don't know the bikes mileage and I want to check the tensioner, rings and valves/guides.

Thoughts?

[ Guests cannot view attachments ]

On a separate note, I'm not putting this bike back to stock so will be selling/passing on a few things. Any interest in the below? If there is I'll take some photos.

Exhaust headers (550F 4-1) - they would need re-chroming and are rusted onto the collecter. I could cut it off and check the condition of it if there is any interest. I think they're just a bit rusty and don't have any dents.
Controls left and right
Seat and pan
Grab rail
Headlight ears
Chain guard
indicators





 

« Last Edit: February 18, 2019, 03:07:32 PM by eight0 »
1x 1976 CB550F1
1x KTM EXC 200
1x KTM EXC 300

Offline Trigger

  • SOHC Jedi
  • Posts: 6679
  • Engines built on reputation, not advertising.
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #32 on: February 18, 2019, 02:24:27 PM »
Interested in the down pipes. Could you put some pictures up ?

Offline eight0

  • SOHC Associate
  • Posts: 79
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #33 on: February 18, 2019, 02:37:33 PM »
Interested in the down pipes. Could you put some pictures up ?

Sure Trigger, it will be a little while as my mate is away now and I don't have access to the garage.
1x 1976 CB550F1
1x KTM EXC 200
1x KTM EXC 300

Offline Trigger

  • SOHC Jedi
  • Posts: 6679
  • Engines built on reputation, not advertising.
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #34 on: February 18, 2019, 02:58:12 PM »
Interested in the down pipes. Could you put some pictures up ?

Sure Trigger, it will be a little while as my mate is away now and I don't have access to the garage.

No worries, i can wait a little while  ;)

Offline eight0

  • SOHC Associate
  • Posts: 79
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #35 on: March 04, 2019, 11:56:21 AM »
No worries, i can wait a little while  ;)
[/quote]

Here you go Trigger. Not in the best condition. No dents or holes but a few deeper grazes here and there.

[ Guests cannot view attachments ]
[ Guests cannot view attachments ]
[ Guests cannot view attachments ]
[ Guests cannot view attachments ]
1x 1976 CB550F1
1x KTM EXC 200
1x KTM EXC 300

Offline eight0

  • SOHC Associate
  • Posts: 79
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #36 on: March 04, 2019, 12:00:04 PM »
I also have a Tank in terrible condition. No idea why anyone might want it but you never know.

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]
1x 1976 CB550F1
1x KTM EXC 200
1x KTM EXC 300

Offline Trigger

  • SOHC Jedi
  • Posts: 6679
  • Engines built on reputation, not advertising.
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #37 on: March 04, 2019, 08:13:08 PM »
No worries, i can wait a little while  ;)

Here you go Trigger. Not in the best condition. No dents or holes but a few deeper grazes here and there.

[ Guests cannot view attachments ]
[ Guests cannot view attachments ]
[ Guests cannot view attachments ]
[ Guests cannot view attachments ]
[/quote]


Cheers for the pictures but, they look past the point of no return. I will keep looking

Offline eight0

  • SOHC Associate
  • Posts: 79
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #38 on: May 03, 2019, 08:00:40 PM »
I am still working on the bike promise.

Cut out the hubs to send of for re-building with aluminium rims

[ Guests cannot view attachments ]

Made a new tab to fit the 500T tank and moved the front tank pegs

[ Guests cannot view attachments ]

Started making the seat

[ Guests cannot view attachments ]

and don't judge me on my welds.. I'm learning!

1x 1976 CB550F1
1x KTM EXC 200
1x KTM EXC 300

Offline eight0

  • SOHC Associate
  • Posts: 79
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #39 on: September 30, 2019, 12:28:49 PM »
Slow slow progress. I've never fabricated with metal before so it's taking me twice as long and I only get to work on it max 2 days a month.

Made a tray to go under the seat hump and finished making the seat, it's got a bit rusty but I'm not worried about that for now.

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

Also made a tray for the electrics.

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

You may have seen in my forum post I had some trouble with the rear hub bearing retainer (or at least Hagon did) but thanks to Chris (Moorey) that's sorted and back being built.

Collected lots of shiny parts just like you all told me not to. Most recent is this lovely top clamp from Messner moto.

[ Guests cannot view attachments ]

1x 1976 CB550F1
1x KTM EXC 200
1x KTM EXC 300

Offline Moorey

  • SOHC Master
  • Posts: 1026
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #40 on: September 30, 2019, 12:53:51 PM »
Fully weld up your seams on the seat and then use a flap disc to remove excess weld. You will end up with a much nicer finish in the long run even if you are having a padded finish and you will find it far more satisfying. Not the best way to learn to weld is on your workpiece, practice, practice, practice on bits of scrap and offcuts first.

Offline eight0

  • SOHC Associate
  • Posts: 79
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #41 on: September 30, 2019, 12:59:07 PM »
Fully weld up your seams on the seat and then use a flap disc to remove excess weld. You will end up with a much nicer finish in the long run even if you are having a padded finish and you will find it far more satisfying. Not the best way to learn to weld is on your workpiece, practice, practice, practice on bits of scrap and offcuts first.

Thanks Chris, I was wondering if I should do that. I sent some pictures to the guy who's going to do the paint and he said to leave it.. but I think I'll take your advice and do that before giving it to him.

This is kind of what I'm going for if you hadn't gathered. Watching the few videos of dustin making these seats I wasn't sure if he welded the seams or not.

[ Guests cannot view attachments ]



1x 1976 CB550F1
1x KTM EXC 200
1x KTM EXC 300

Offline Oddjob

  • SOHC Jedi
  • Posts: 3037
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #42 on: September 30, 2019, 02:22:01 PM »
Didn't spot this before but is the grabrail still available, need to see if it differs from what I have now and suspect it does.
Don't play stupid with me, I'm better at it

Offline Moorey

  • SOHC Master
  • Posts: 1026
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #43 on: September 30, 2019, 03:13:23 PM »
Fully weld up your seams on the seat and then use a flap disc to remove excess weld. You will end up with a much nicer finish in the long run even if you are having a padded finish and you will find it far more satisfying. Not the best way to learn to weld is on your workpiece, practice, practice, practice on bits of scrap and offcuts first.

Thanks Chris, I was wondering if I should do that. I sent some pictures to the guy who's going to do the paint and he said to leave it.. but I think I'll take your advice and do that before giving it to him.

This is kind of what I'm going for if you hadn't gathered. Watching the few videos of dustin making these seats I wasn't sure if he welded the seams or not.

(Attachment Link)

He must do for a paint finish. There is only about 15mins welding there with a mig for any decent welder as you have done the hard bit. Let him have it unless you want the personal satisfaction of knowing you have done it yourself, but it will take you far longer. Depends how you want to spend your time.  ;)

Offline eight0

  • SOHC Associate
  • Posts: 79
    • View Profile
Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #44 on: September 30, 2019, 03:59:09 PM »
Didn't spot this before but is the grabrail still available, need to see if it differs from what I have now and suspect it does.

Sorry it's gone to another forum member.
1x 1976 CB550F1
1x KTM EXC 200
1x KTM EXC 300