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1-20 of 205 Results
  1. Member Introductions
    I just recently purchased a 1982 cb450sc Nighhawk. I cleaned the carbs and its running pretty good now. It does have some issues and I had a few questions. hopefully someone can point me in the right direction. First of all what is compatible with the regular cb450 and what isn't? I know a lot...
  2. Engine Discussion
    I recently got a '85 CB450SC Nighthawk and im looking to replace the piston rings but unfortunately im unable to find a option that isnt overpriced or from China. Im wondering if the piston rings of a 650 Nighthawk would fit the piston of a 450 Nighthawk piston head?
  3. Engine Discussion
    Hello! I have the CB450N in my possession, but I am encountering an issue. I cannot get it to start, and I'm not sure what the problem is. I have changed the oil, spark plugs, and cleaned the carburetor, but it still cannot start... The engine it turns with the starter, but it seems like it's...
  4. Engine Discussion
    So these are new! Hot off the press from Common Motor Collective. Just in time for the rebuild. I'll post some more as I get into it. I've created this thread because I haven't found another with the same subject matter. I'm going .50mm over to match the bore of the jugs I found. $150 for the...
  5. Electrical Discussion
    Trying to replace the ignition switch. the owner before me spliced some aftermarket 6 pin switch and I don’t know what to do. The replacement switch has 7 holes so I’m assuming 7 wires but the bike currently only has 6 wires. Any recommendations are appreciated.
  6. Engine Discussion
    I was driving down the free way when I felt a sudden loss of power on the bike it then continues to completely shut off on me. I pull over and decide to attempt to start it back up and it fires up without hesitation. About half a mile down the rode it decides to give out and not want to start...
  7. Engine Discussion
    I'd like to introduce you all to my 1971 CB(CL?)450, which I picked up last year and did a decent amount of work to over the winter. The reason I say "CB(CL?)450" is that I'm not really sure which it is. The VIN stamped on the frame shows CL450, but the exterior parts and exhaust all seem to...
  8. Engine Discussion
    Just a quick post. Trying to get some insight. Took off the valve covers on the 450. Inspecting Cams and Tappets. Does the lobe wear seem normal for a old 450? Also noticed the edges of the lobes are razor sharp. Is that normal?
  9. Member Introductions
    New to me '70 CB450. K3...? 16,000 miles on the odometer. Purchased 04/28/22. Hauled it home today. All original motor. (Someone has been inside the motor...) Starts in 1-2 kicks. Motor feels strong. All 5 gears. Zero smoke. No oil leaks...yet. No electric start. High hopes with this one...
  10. Engine Discussion
    Hello all, I have a 1974 CB450 that has a 1975 500T motor that was put in it by a local motorcycle shop after my 450 motor died on me. I have been continuously restoring and repairing this motorcycle for over a year now, and yet have only ridden it (while it was running correctly) maybe twice...
  11. Member Introductions
    Hey all, I'm from British Columbia, Canada. I'm looking at possibly picking up a basket case 1982 nighthawk 450 as a first bike. Apparently it was running and was taken apart for customization but then the guy lost motivation. It's in pieces but apparently it's all there. He only wants $250 for...
  12. Manuals and Technical Documents
    Hi! I am a new user and this is my first post. Last summer I bought a "1982 Honda Hawk" from a guy in Montana. I had never heard of a "Hawk" but he assured me it was indeed a "Hawk 450" and not a "Night Hawk." He also assure me that it was road ready, so I drove 4 hours with my buddy to then...
  13. Parts For Sale
    Happy new year to all groups here. i need spare parts for cb450 k1 i.e. Gauges and headlight let me know if you have it. Thank You
  14. Wanted Parts and Bikes
    Hello all! Glad to have found this forum for help. I am a 20 year old college student who is absolutely in love with vintage Honda motorcycles. I purchased a 1974 CB450 about 2 months ago in rough shape, and have been slowly restoring it back as original as I possibly can. HOWEVER!!! After...
  15. Project Logs
    Hello all! Glad to have found this forum for help. I am a 20 year old college student who is absolutely in love with vintage Honda motorcycles. I purchased a 1974 CB450 about 2 months ago in rough shape, and have been slowly restoring it back as original as I possibly can. HOWEVER!!! After...
  16. Member Introductions
    Hello everyone! I've done things a bit out of order. I made a discussion post before doing an intro. So I'm going to back pedal and do that now. So I am a motorcycle enthusiasts, though my knowledge is probably lacking simply due to my little experience. But I am trying to learn as much as I...
  17. Fuel Supply and Carburation
    I just finished rebuilding the top end on my 72 CB450, new pistons, rings, gaskets, valves, sleeved cylinders, cams and cam followers repaired by Delta Cams. Bike fired up great, but I am now facing a carburetor issue. The idle is erratic, doesn't return to idle right away, after the bike...
  18. Engine Discussion
    Hello all, After rebuilding the head on my cb450 I am having a run issue on the left side, it doesn’t want to run at an idle nearly as strong as the right. After swapping the carbs around and checking fuel flow, ignition timing, engine compression, etc. I’ve developed a theory that I have a...
  19. Miscellaneous Discussion
    Hello, been searching on the forumns for a while and haven't found an answer so I figured I'd ask here. I found a parts bike for sale, its a 1981 cm400c that has 1981 cb400c parts. I currently have a 1971 CB450, body type MC. Just wondering if parts like the handle bars, fenders, wheels and...
  20. Frame, Suspension and Steering
    Hi, I’m currently rebuilding a set of 1972 CB450 K5 front forks. However the damper rod part number 51430-323-020 doesn’t operate smoothly. I cannot find any replacement damper rods. Has anyone serviced the damper rods as I cannot see how to open them up. Any help would be greatly appreciated.
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