1972 CB350F... Cliche Cafe/Brat Build

Discussion in 'Some Assembly Required' started by TheGr8Pumpkin, Jul 25, 2017.

  1. Andyvh1959

    Andyvh1959 Cheesehead Klompen

    Joined:
    Feb 16, 2012
    Oddometer:
    2,556
    Location:
    Da frozen tundra eh? 1.5 mile west of Lambeau
    Could be the o-rings Honda used to seal the oil galleys running up through the cylinder/block up to the head. Honda-4s rely on fairly high system pressure to deliver enough oil to the the cam carriers. Standard nitrile/Buna-n o-rings are only good for a bit over 200 degrees F. Those Hondas could run quite hot, and once the o-rings get over-heated to take a thermal "set" they would seal as effectively. Would be worthwhile to upgrade the o-rings to high temp silicon seals.
    #21
    TheGr8Pumpkin likes this.
  2. TheGr8Pumpkin

    TheGr8Pumpkin Adventurer

    Joined:
    Oct 8, 2014
    Oddometer:
    53
    Location:
    Atlanta, GA
    Well... now that the school year has begun, the build has slowed down a little bit. Once I paint the frame, I will be able to start rebuilding. I'm not exactly sure when the frame will be ready for paint though. There is still a good bit of sanding and prep work that needs to be done. Here are all the other parts that I have painted. The light cluster needs a wet sand and Im waiting to clear coat the front fender until I clear coat the tank so that I only have to mess with the spray max 2k once.

    IMG_9754.jpg IMG_9752.jpg
    #22
  3. TheGr8Pumpkin

    TheGr8Pumpkin Adventurer

    Joined:
    Oct 8, 2014
    Oddometer:
    53
    Location:
    Atlanta, GA
    I'm not sure yet what I will do with the engine. The bike was put away with only 7K on the odometer. So, I'm hoping the engine isn't in too bad of shape. I'm thinking that replacing all the gaskets should be enough, but there is no telling until I tear into it.
    #23
  4. Pezz_gs

    Pezz_gs Cant ride for crap

    Joined:
    Nov 13, 2004
    Oddometer:
    4,597
    Location:
    Sydney Skunkworks
    The best thing I did with my XR460/4 (CB400/4) was to fit a Dyna ignition system :thumb

    [​IMG]

    [​IMG]
    #24
    Stasher1, duckman44 and Bultaco74 like this.
  5. TheGr8Pumpkin

    TheGr8Pumpkin Adventurer

    Joined:
    Oct 8, 2014
    Oddometer:
    53
    Location:
    Atlanta, GA
    Very cool build! I will have to keep the Dyna ignition in mind.
    #25
  6. TheGr8Pumpkin

    TheGr8Pumpkin Adventurer

    Joined:
    Oct 8, 2014
    Oddometer:
    53
    Location:
    Atlanta, GA
    Finally got the frame cleaned up and painted after some help from the new garage assistant. IMG_9814.jpg

    IMG_9810.jpg

    IMG_9825.jpg

    Painted the forks, but forgot to take the after picture. In a couple weeks I should be putting stuff back together.

    IMG_9816.jpg
    #26
    ADVBedouin and Pezz_gs like this.
  7. Ghengis o reilly

    Ghengis o reilly Adventurer

    Joined:
    Aug 3, 2016
    Oddometer:
    11
    Looking forward to seeing finished result :1drink
    #27
    TheGr8Pumpkin likes this.
  8. TheGr8Pumpkin

    TheGr8Pumpkin Adventurer

    Joined:
    Oct 8, 2014
    Oddometer:
    53
    Location:
    Atlanta, GA
    Well, I got moved to the second forum page, so I figured it was time to do a little bit of work. I cleaned up some rusty parts: screws, swing arm bolt, etc... and now I have attached the center stand, swing arm, and bottom triple tree. I was planning on putting on the top triple tree, but the threads on the steering head nut were so rusty that they dissolved away in vinegar. A new nut has been ordered... I've been itching to get back to work on this thing so I actually brought it to my apartment at law school ha. bike apartment 1.jpg
    #28
  9. Todd157k

    Todd157k Long timer

    Joined:
    Aug 14, 2012
    Oddometer:
    1,248
    Location:
    Ventura, CA
    Looks good!

    I used coca-cola to remove the rust on my hardware when I was restoring my Triumph. Worked great. Didn't work really fast though.
    #29
    TheGr8Pumpkin likes this.
  10. TheGr8Pumpkin

    TheGr8Pumpkin Adventurer

    Joined:
    Oct 8, 2014
    Oddometer:
    53
    Location:
    Atlanta, GA
    Got the new steering stem nut in with some other parts. Pretty interesting to see just how much damage rust can do. IMG_0041.jpg IMG_0042.jpg IMG_0043.jpg IMG_0044.jpg
    #30
  11. Ghengis o reilly

    Ghengis o reilly Adventurer

    Joined:
    Aug 3, 2016
    Oddometer:
    11
    Looking good :1drink
    #31
  12. TheGr8Pumpkin

    TheGr8Pumpkin Adventurer

    Joined:
    Oct 8, 2014
    Oddometer:
    53
    Location:
    Atlanta, GA
    Attached the front forks, rear shocks, seat and seat pan, and picked up some handle bars from cycle gear. I'll definitely be switching out the rear shocks at some point, but that will probably be after the bike is finished.
    IMG_0070.jpg IMG_0071.jpg

    Does anyone have any tips for taking that dent out? a little too big to use bondo I think.

    Also, started looking at the engine and the left cover is completed rusted onto the shifter rod. I've tried pb blaster, heat, and even muriatic acid to try and get it off, but none of it has worked.
    #32
  13. Todd157k

    Todd157k Long timer

    Joined:
    Aug 14, 2012
    Oddometer:
    1,248
    Location:
    Ventura, CA
    #33
    TheGr8Pumpkin likes this.
  14. TheGr8Pumpkin

    TheGr8Pumpkin Adventurer

    Joined:
    Oct 8, 2014
    Oddometer:
    53
    Location:
    Atlanta, GA
    Here's a bit of an update. I've finished the tank and have a fairly good rolling frame set up. Carb cleaning will be coming up next.

    IMG_0927.jpg IMG_0928.jpg IMG_0929.jpg IMG_0930.jpg Here's a bit of an update. I've finished the tank and have a fairly good rolling frame set up. Carb cleaning will be coming up next.
    #34
  15. TheGr8Pumpkin

    TheGr8Pumpkin Adventurer

    Joined:
    Oct 8, 2014
    Oddometer:
    53
    Location:
    Atlanta, GA
  16. Ghengis o reilly

    Ghengis o reilly Adventurer

    Joined:
    Aug 3, 2016
    Oddometer:
    11
    Awesome work, keep us updated:clap
    #36
    TheGr8Pumpkin likes this.
  17. TheGr8Pumpkin

    TheGr8Pumpkin Adventurer

    Joined:
    Oct 8, 2014
    Oddometer:
    53
    Location:
    Atlanta, GA
    So, one of the spark plugs got rust fused into the head and a couple other parts of the motor are toast including the head. At this point im considering an entire motor swap. Seeing as CB350Four motors aren't that easy to come by, now taking suggestions for an interesting motor to swap in. obviously any regular CB motor would be fairly easy, but im down to make things interesting.
    #37
  18. Pezz_gs

    Pezz_gs Cant ride for crap

    Joined:
    Nov 13, 2004
    Oddometer:
    4,597
    Location:
    Sydney Skunkworks
    #38
    TheGr8Pumpkin likes this.