Poll

Just purchased this '78 cb750f and the frame has been chopped. Is it still structurally sound and are those coils ok?

Is it still ok to ride?
6 (54.5%)
Are those coils ok or should I swap them out?
5 (45.5%)

Total Members Voted: 6

Author Topic: anyone seen this done to a frame?  (Read 3087 times)

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Offline Retro Rocket

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Re: anyone seen this done to a frame?
« Reply #25 on: March 18, 2009, 05:20:35 PM »
I would buy one of Gordons kits if i was you {already have one} if fitted correctly there will be no difference to the frames integrity.

Mick
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If You can't fix it with a hammer, You've got an electrical problem.

upperlake04

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Re: anyone seen this done to a frame?
« Reply #26 on: March 18, 2009, 05:24:16 PM »
  A good welder should be able to fit and weld the missing pieces. Looks like an easy and quick (inexpensive) job to me?

Offline fmctm1sw

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Re: anyone seen this done to a frame?
« Reply #27 on: March 18, 2009, 05:28:04 PM »
hell....I guess I got 9 lives then.........rode one like that for years.......okay......general consenus it's not structurally sound..........I'll go back and sit in my corner now.............

You took it well though...  Didn't come back with a flame or anything, well done!
Quote from: 754
Dude is that a tire ? or an O-ring..??

Quote from: inkscars
This is not a pod thread
This is not a #$%* on my vacuum gauges thread
This is a help or GTFO thread.

1973 CB350F
1973 CB350G
1975 CB550K
1983 GL650I
1973 CB750K3 (http://forums.sohc4.net/index.php?topic=92888.0)
1984 Kawasaki KLT-250 (AKA 3 wheeler of death)
1994 Honda TRX300
1999 Honda TRX250

jakeloiko

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Re: anyone seen this done to a frame?
« Reply #28 on: March 18, 2009, 05:30:47 PM »
Thanks for the input guys. Little razzing does everyone a little good. I will pull my head out of my ass next time I buy a bike. My friend welds so I think I can get this fixed pretty easily. Lets see if I can get some $$$ back. Doubtful

Offline Industrial Cafe

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Re: anyone seen this done to a frame?
« Reply #29 on: March 18, 2009, 05:35:29 PM »
ask him if he has the chunk he cut out.
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline Shenanigans

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Re: anyone seen this done to a frame?
« Reply #30 on: March 18, 2009, 05:47:21 PM »
Thanks for the input guys. Little razzing does everyone a little good. I will pull my head out of my ass next time I buy a bike. My friend welds so I think I can get this fixed pretty easily. Lets see if I can get some $$$ back. Doubtful

Trying to get your money back from a SOHC4 is usually a uphill battle...

But good luck.
   This pretty much sums it up.   76' CB592 cafe. 69 750 project, 03 CBR954, 75 750 super sport.

Offline fmctm1sw

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Re: anyone seen this done to a frame?
« Reply #31 on: March 18, 2009, 05:50:20 PM »
Thanks for the input guys. Little razzing does everyone a little good. I will pull my head out of my ass next time I buy a bike. My friend welds so I think I can get this fixed pretty easily. Lets see if I can get some $$$ back. Doubtful

That's the problem with these old bikes.  You just never know what a PO may have dropped into the case, stripped what bolts, cut out, etc.
Quote from: 754
Dude is that a tire ? or an O-ring..??

Quote from: inkscars
This is not a pod thread
This is not a #$%* on my vacuum gauges thread
This is a help or GTFO thread.

1973 CB350F
1973 CB350G
1975 CB550K
1983 GL650I
1973 CB750K3 (http://forums.sohc4.net/index.php?topic=92888.0)
1984 Kawasaki KLT-250 (AKA 3 wheeler of death)
1994 Honda TRX300
1999 Honda TRX250

Offline livetoskate

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Re: anyone seen this done to a frame?
« Reply #32 on: March 18, 2009, 06:08:09 PM »
Looks like there's no lack of response on this Question.Just get Chris to weld it up for ya.
78 cb750K , 73 CB750 x2, Yamaha dt360 & 250

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: anyone seen this done to a frame?
« Reply #33 on: March 18, 2009, 11:31:24 PM »
Green is good. Green means go. Better spark but downside is they suck more juice outta the electrical system but thats not necessarily a negative. Just be sure the charging system is working properly and EVERY connection is clean, tight, and greased with dielectric grease. Heavy city driving could create a low voltage issue. If that happens just keep your rpms above 2000 or more by throttle or lower gears. Get a Battery Tender and keep it hooked up. That will have you ready to leave each day and prevent you from buying a new battery every year.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Don R

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Re: anyone seen this done to a frame?
« Reply #34 on: March 19, 2009, 12:01:40 AM »
Yep. I got that surprise twice. both on 70 models. Drag racers started that but a lot of people did it. No worries on mine, I'm gonna get or make a kit and bolt them in/out. Easier to work on anyway. pulling that engine for a top end repair is no fun either.
No matter how many times you paint over a shadow, it's still there.
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Offline Don R

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Re: anyone seen this done to a frame?
« Reply #35 on: March 19, 2009, 12:23:50 AM »
Are these kits still available? Is the tubing a standard size available at say a race car shop? Mine were cut when I got the bike.
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 mystic_1

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Re: anyone seen this done to a frame?
« Reply #36 on: March 19, 2009, 04:51:35 AM »
Send a PM to Ilbikes (Gordon), he should be able to tell you everything you need to know.

http://forums.sohc4.net/index.php?action=profile;u=2968

mystic_1
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My build thread:  http://forums.sohc4.net/index.php?topic=68952.0

Offline 754

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Re: anyone seen this done to a frame?
« Reply #37 on: March 19, 2009, 08:27:19 AM »
I know there is an alternative kit in the works..
Should be ready this spring. Will be reasonable cost.

 Once welded in, you will not have to remove any pieces to get the top end off.

 Will post more info when it is  ready to sell.
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Old Scrambler

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Re: anyone seen this done to a frame?
« Reply #38 on: March 19, 2009, 02:57:49 PM »
If you elect to reweld........follow the design of the 750A frame.  Then you can still remove the top end.
Dennis in Wisconsin
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Offline Shenanigans

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Re: anyone seen this done to a frame?
« Reply #39 on: March 19, 2009, 03:50:11 PM »
I know there is an alternative kit in the works..
Should be ready this spring. Will be reasonable cost.

 Once welded in, you will not have to remove any pieces to get the top end off.

 Will post more info when it is  ready to sell.

Hurry up.  ;D
   This pretty much sums it up.   76' CB592 cafe. 69 750 project, 03 CBR954, 75 750 super sport.

Offline mystic_1

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Re: anyone seen this done to a frame?
« Reply #40 on: March 19, 2009, 04:18:39 PM »
If you elect to reweld........follow the design of the 750A frame.  Then you can still remove the top end.


Well, then you'd need a 750A tank, n'est-ce pas?

The tank tunnel would need to be recessed to clear the humps in the secondary rails.

mystic_1
"A ship in harbor is safe, but that is not what ships are built for."
- John Augustus Shedd

My build thread:  http://forums.sohc4.net/index.php?topic=68952.0

Offline 754

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Re: anyone seen this done to a frame?
« Reply #41 on: March 19, 2009, 08:43:58 PM »
Yes you may have to mod tank a bit or run an A tank.
 Are they  not quite close to a 77/78 K tank?
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way