« previous next »
Pages: [1]   Go Down

Author Topic: Mystery part  (Read 666 times)

0 Members and 1 Guest are viewing this topic.

Offline beemerbum

  • Expert
  • ****
  • Posts: 1,060
Mystery part
« on: October 17, 2022, 06:09:10 PM »
I have been into the guts of two CB 750 motors, a 1971 and a 1972. Recently a friend, based on my "vast experience" (duh) asked me to refresh a 1978 Supersport motor that he got. Foolishly I agreed. When I split the cases, I was surprised to find   there was a piece missing. I searched the inter web and found the missing part.The name of which I forgot. Having received it from ebay it I found that the part does not fit. The hole for the bolt does not line up. The question: although I saw the piece (indicated by screwdriver) in earlier cases, I found none in the 78 motor. Was the part left out of the '77-'78 Supersport motor? Was the entire case changed? I also noted that the '78 motor has no apparent chain oiler provision. Any advice will be appreciated. Thanks in advance.
« Last Edit: October 17, 2022, 06:12:00 PM by beemerbum »
Logged

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 19,966
  • Saver of unloved motorcycles.
Re: Mystery part
« Reply #1 on: October 17, 2022, 06:11:19 PM »
The factory deleted that part with the deletion of the chain oiler.
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline CB750R

  • Hot Shot
  • ***
  • Posts: 609
  • 77 CB750F
Re: Mystery part
« Reply #2 on: October 17, 2022, 06:12:47 PM »
No chain oiler for sure, that got phased out way before the F2. I don’t have one of those things in my current motor! I will be tearing down a 77 F2 motor soon will show you what I find!
Logged

Offline beemerbum

  • Expert
  • ****
  • Posts: 1,060
Re: Mystery part
« Reply #3 on: October 17, 2022, 06:23:52 PM »
Thank you gentlemen. At 77, I am still learning many things
Logged

Offline Mark K

  • Hot Shot
  • ***
  • Posts: 300
Re: Mystery part
« Reply #4 on: October 18, 2022, 04:53:04 AM »
I know it's a moot point now, but in the K3 thru K5 parts manual it's called the Final Shaft Oil Guide, Ref. 9
Logged
Current bikes
'73 Honda CB750K3 (current project), '19 Kawasaki KLX 140G, '72 Honda CL70K3, '70 Honda SL350 (next project)

Former bikes
'74 Yamaha 60, '72 Maico 250, '74 Kawasaki 250 S1, '82 Kawasaki KZ550, '84 Honda VF700F Interceptor, '99 HD FLSTS Heritage Springer, '97 HD FLHTCUI Ultra Classic '05 HD FLHT Electraglide, '9? Buell Lightning, '03 FLHTCUI Ultra Classic,'14 Honda CRF250L

Online MauiK3

  • A K3 is saved
  • Old Timer
  • ******
  • Posts: 4,305
  • Old guy
Re: Mystery part
« Reply #5 on: October 18, 2022, 07:57:10 AM »
Might still be good to have to keep more oil near the final drive bearing.
Logged
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline HondaMan

  • Someone took this pic of me before I became a
  • Really Old Timer ...
  • *******
  • Posts: 13,879
  • ...not my choice, I was nicknamed...
    • Getting 'em Back on the Road
Re: Mystery part
« Reply #6 on: October 18, 2022, 07:38:57 PM »
These were deleted in the engines where the size 630 chain is used. This was the K7/8 and F2/3 engines.
Logged
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline newday777

  • Really Old Timer ...
  • *******
  • Posts: 5,319
  • Avatar is my 76 K6 in Colorado w/Cody on back 1980
Re: Mystery part
« Reply #7 on: October 19, 2022, 05:29:48 AM »
Quote from: HondaMan on October 18, 2022, 07:38:57 PM
These were deleted in the engines where the size 630 chain is used. This was the K7/8 and F2/3 engines.
Didn't they get deleted on the K6(no chain oiler on the K6)
Logged
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline ekpent

  • Really Old Timer ...
  • *******
  • Posts: 13,512
  • To many bikes-but lookin' for more
Re: Mystery part
« Reply #8 on: October 19, 2022, 05:34:55 AM »
Quote from: newday777 on October 19, 2022, 05:29:48 AM
Quote from: HondaMan on October 18, 2022, 07:38:57 PM
These were deleted in the engines where the size 630 chain is used. This was the K7/8 and F2/3 engines.
Didn't they get deleted on the K6(no chain oiler on the K6)
I agree on that.
Logged

Offline Jerry Rxman Griffin aka MuthaF'er

  • This MuthaF'er is getting to be a
  • Really Old Timer ...
  • *******
  • Posts: 14,919
  • Bought her new 4/75
Re: Mystery part
« Reply #9 on: October 19, 2022, 09:51:11 AM »
Not on my original owner F0
Logged
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)
Pages: [1]   Go Up
« previous next »