« previous next »
Pages: [1]   Go Down

Author Topic: Cb750,frame ,under tank,diy kit,for head and cylinder removal!  (Read 1404 times)

0 Members and 1 Guest are viewing this topic.

Offline 1976cb750f836

  • Hot Shot
  • ***
  • Posts: 419
  • 76 cb750f, 836, 78 wheels
Cb750,frame ,under tank,diy kit,for head and cylinder removal!
« on: November 07, 2017, 06:50:44 AM »
20 years ago when I first bought my bike,it needed rings and a valve job.
I talked to an experienced bike mechanic who told me to cut the frame out under tank,do the repair,and just leave it out? Well I followed his advice, kinda,I did the repaie,but just couldn't leave that frame section out.
I cut the tubes ,but left them attached to each other!
I found a tube that just fit over the stock tube,drilled and tapped for Allen set screws?
No vibration, no ratles,the set screws haven't came loose once in 20 Years!
And about 10 years ago when I did the 836, it made things so much easier to do than pulling the engine!
Logged

Offline slikwilli420

  • Master of Disaster
  • Master
  • *****
  • Posts: 2,357
Re: Cb750,frame ,under tank,diy kit,for head and cylinder removal!
« Reply #1 on: November 07, 2017, 07:31:18 AM »
Really not the best way to do a frame kit, and should probably be redone. Relying on a small set screw to keep everything from moving around is not very wise. Get a proper frame kit, and enjoy the convenience as well as restored rigidity of the frame.
Logged
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline TwoTired

  • Really Old Timer ...
  • *******
  • Posts: 21,802
Re: Cb750,frame ,under tank,diy kit,for head and cylinder removal!
« Reply #2 on: November 07, 2017, 09:19:22 AM »
Quote from: slikwilli420 on November 07, 2017, 07:31:18 AM
Really not the best way to do a frame kit, and should probably be redone. Relying on a small set screw to keep everything from moving around is not very wise. Get a proper frame kit, and enjoy the convenience as well as restored rigidity of the frame.
Completely agree.

I can imagine that bike is quite a handful in bumpy high speed turns, what with all the frame twisting.
Logged
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline 1976cb750f836

  • Hot Shot
  • ***
  • Posts: 419
  • 76 cb750f, 836, 78 wheels
Re: Cb750,frame ,under tank,diy kit,for head and cylinder removal!
« Reply #3 on: November 07, 2017, 10:49:35 AM »
What is a proper frame kit,didn't know they exsisted?
Logged

Offline slikwilli420

  • Master of Disaster
  • Master
  • *****
  • Posts: 2,357
Re: Cb750,frame ,under tank,diy kit,for head and cylinder removal!
« Reply #4 on: November 07, 2017, 11:00:50 AM »
A few options actually. Frank (754 on here) makes a nice aluminum one. There is also a weld in steel version, or you can make your own with some tube clamps like I did, seen here:

http://www.trail-gear.com/product/4628/chromoly-interlocking-tube-clamps
Logged
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline TwoTired

  • Really Old Timer ...
  • *******
  • Posts: 21,802
Re: Cb750,frame ,under tank,diy kit,for head and cylinder removal!
« Reply #5 on: November 07, 2017, 11:13:09 AM »
Logged
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline 1976cb750f836

  • Hot Shot
  • ***
  • Posts: 419
  • 76 cb750f, 836, 78 wheels
Re: Cb750,frame ,under tank,diy kit,for head and cylinder removal!
« Reply #6 on: November 07, 2017, 05:02:32 PM »
Thanks,I'll redo mine,I've benn having an out of ballence feeling, but could make it go away with throttle, instead of speed? Maby this will fix that?
Logged
Pages: [1]   Go Up
« previous next »