Author Topic: New member from SoCal currently wrenching on a non-op CB750  (Read 637 times)

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Offline Cragdog

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Hello all, i have read a few post here in the past that have been helpful to me so I decided to join up and learn more from this great community of riders and wrenchers!
I am by no means a good mechanic, but I have ambition enough to tackle most projects on my own and when I have absolutely no idea where to go/begin or what to do... Well, that's why you're all here right?!

About 6 months back I hit the alternator cover of my K0 on a cement park bench when riding through a campground and my bike hasn't run since.. I had hoped a simple replacement of the case was all I needed and lack of funds put it on the back-burner for a while. My sweet gf and my good friend tried to surprise me with a new case and functioning bike around my birthday this year, but the mechanics at out local moto shop said I had bent the crankshaft due to the impact and said my engine was most likely toast and would need to be rebuilt. They suggested I part the bike out to make back what I bought it for. I however, had become very attached to this bike and for a while was convinced it was a sandcast, (but further investigation proved me wrong  :P) so I decided to ignore them and eventually crack the cases myself to take a look. Well, the time has come, I removed the engine from the frame this past weekend and the work will soon begin when time permits. I am looking forward to posting about the work I will be doing and including some pictures as well. I hope to gain a lot of the communities knowledge on these motors and get me back in the saddle again once the babes back in action.

Thanks for looking, see you 'round the forums...
If you like it, then you should ride it.

1970 cb750 K0
1983 VT750c
1974 Suzuki GT550

Offline Retro Rocket

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Re: New member from SoCal currently wrenching on a non-op CB750
« Reply #1 on: June 11, 2013, 05:04:14 PM »
It would have to be a big hit to bend the crank, check the stator for broken insulation, the stator probably hit the rotor and wore through. Does it turn over...?  Oh, welcome.... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline tool14

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Re: New member from SoCal currently wrenching on a non-op CB750
« Reply #2 on: June 12, 2013, 11:17:02 AM »
welcome,and good luck with your fix.

Offline 70CB750

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Re: New member from SoCal currently wrenching on a non-op CB750
« Reply #3 on: June 12, 2013, 11:50:18 AM »
Welcome!

Good choice you made, young padawan  ;D

Would be a shame to part out K0.
Prokop
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Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
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2006 KLR650

Offline Johnie

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Re: New member from SoCal currently wrenching on a non-op CB750
« Reply #4 on: June 12, 2013, 11:53:46 AM »
The KO is becoming very hard to find and would be a travisty to part it out. I agree...these young mechanics now days have no idea how to work on these vintage bikes...no clue. I would question the bent crank too. It would take a pretty good hit to bend that crank. Might want to see if there is a forum member in your area just to eyeball that crank. One thing you will learn here is we on this board really like pics. How about posting some when you can...and welcome to the forum... :)
« Last Edit: June 12, 2013, 11:57:04 AM by Johnie »
1970 CB750K0 - Candy Ruby Red
1973 CB750K3 - Candy Bacchus Olive or Sunflake Orange
1970 Chevy Chevelle SS396 - Cortez Silver
1976 GL1000 Sulphur Yellow

Oshkosh, WI  USA

Offline davidtime

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Re: New member from SoCal currently wrenching on a non-op CB750
« Reply #5 on: June 15, 2013, 03:45:25 PM »
What part of socal are you in?

Offline Cragdog

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Re: New member from SoCal currently wrenching on a non-op CB750
« Reply #6 on: October 09, 2013, 12:39:25 PM »
Hey guys, sorry for the delay, I got frustrated trying to post pictures and disappeared for a while. If anyone is interested I am going to post my motor tear down here: http://forums.sohc4.net/index.php?topic=129949.msg1453163#msg1453163
If you like it, then you should ride it.

1970 cb750 K0
1983 VT750c
1974 Suzuki GT550