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Author Topic: '75 CB550K1 Gulf - Round...3, the fun stuff  (Read 155699 times)

Offline Ringo

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'75 CB550K1 Gulf - Round...3, the fun stuff
« on: Oct 31, 2010, 14:58:50 »
Picked it up yesterday.  It's a sound runner, in good tune.  The plan is to do a ground up build, completely strip everything and start from scratch.  I haven't decided on color or well anything yet.  Wish I had more to report at the moment, but I figured I'd just get my build thread started with this.

« Last Edit: Oct 11, 2012, 11:55:45 by Ringo »
Chris

Offline t71ford

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Re: '75 CB550
« Reply #1 on: Oct 31, 2010, 18:36:47 »
Wow! nice find! That is a lot better shape than I had figured. Has an exhaust, too...I want to see it in person :o
Some people will tell you that slow is good - and it may be, on some days - but I am here to tell you that fast is better. Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles….Hunter S. Thompson

Offline Ringo

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Re: '75 CB550
« Reply #2 on: Oct 31, 2010, 18:49:43 »
Yeah, the motor runs strong and the exhaust sounds great- just a little quiet for my taste.   ;D  I'm pretty happy with it.

Sad to say I won't be joining you on any more rides until spring though.  I want to tear into the 550 and make sure everything's up to snuff before I ride it again.  The 400 got dropped, and is out for the count, so from now on, nobody rides my bikes unless they are as good or better a rider than me! You'd think I would've learned the first time...
« Last Edit: Nov 08, 2010, 15:30:59 by Ringo »
Chris

Offline t71ford

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Re: '75 CB550
« Reply #3 on: Nov 01, 2010, 00:54:00 »
ouch! at least it is pretty much the end  of the season!
Some people will tell you that slow is good - and it may be, on some days - but I am here to tell you that fast is better. Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles….Hunter S. Thompson

Offline verboten1

  • Posts: 297
  • Der konig
Re: '75 CB550
« Reply #4 on: Nov 01, 2010, 01:06:23 »
wow i wish my project started with something that nice!
1975 CB550F  ....cafe in the works
1982 XV920....cruisin the streets, makin some noise
2000 KLR685...made it to the arctic ocean...

Offline IndieSol

  • Posts: 1367
  • "This one goes to eleven." -Nigel Tufnel
    • Project: Pariah
Re: '75 CB550 "Autumn"
« Reply #5 on: Nov 08, 2010, 16:46:35 »
Shit, nice starting point.

Sorry to hear about your 400.  I really dug on that bike...especially the exhaust.  You know what they say, "Fool me once, shame on you.  Fool me twice...."

At least now you have the opportunity to one-up yourself.

BMW R100
XT350
CJ360 Cafe Project

Project: Pariah

Offline Ringo

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Re: '75 CB550 "Autumn"
« Reply #6 on: Nov 08, 2010, 16:56:17 »
Thanks man.  I will admit that I half-assed the 400, so if I give this one the attention it deserves, it should turn out pretty nice.
Chris

Offline IndieSol

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  • "This one goes to eleven." -Nigel Tufnel
    • Project: Pariah
Re: '75 CB550 "Autumn"
« Reply #7 on: Nov 08, 2010, 17:30:08 »
I don't think I would say it was half-assed.    Your standards have just gotten higher.

My first vintage bike was a '76 CB550.  The only mod I made to it was clubman bars (and I paid a shop to do it), but to me it was "cafe".   If I had it today, at the very least, I would have ditched the starter, put on some new exhaust, threw on some mini-billet signals, clubmans and a new fiberglass seat, and I'd have done the work myself.

I wouldn't rag on someone for "only" having clubman bars or anything, but I would no longer be satisfied with that as the only mod on my bike.
BMW R100
XT350
CJ360 Cafe Project

Project: Pariah

Offline Ringo

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Re: '75 CB550 "Autumn"
« Reply #8 on: Nov 08, 2010, 18:08:50 »
You know, you're right.  I would have saved myself a pretty penny if a year ago I knew what I know now, too.  Live and learn!
Chris

Offline Ringo

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Re: '75 CB550 "Autumn"
« Reply #9 on: Nov 21, 2010, 22:14:58 »
Been doing a bunch of reading on sohc4 today and with crazypj's help, I've convinced myself to do a cb750 piston swap/2.5 or 2.75mm overbore and a 650 cam swap.  Should end up with around 590cc and waken the motor right up.
Chris

Offline Ringo

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Re: '75 CB550 "Autumn"
« Reply #10 on: Nov 28, 2010, 20:28:47 »
Just found a sweet deal on a set of NOS cb750 pistons/rings/pins on ebay so that's done.  .25mm oversize, so that'll give me 2.75mm oversize, around 595cc. *EDIT: 596cc to be exact**  Will be needing to machine the pistons a little to fit the 550's smaller combustion chamber, but that should be straightforward.  Having a hard time finding a cb650 cam...anyone have one?  :)

Stability wise, I'm not happy with the front brake caliper sitting in front of the fork, so I swapped left and right forks so the caliper would be behind the fork.  Good thing both lower forks have caliper mounting holes!  The right (now left) mounts do need to be machined down a little to match the other side, but other than that, it looks to be a perfect fit.  Curious why Honda didn't make them mirror images of each other...

I also got the frame stripped, and will be cutting it up shortly.  I know, I have to break out the camera and stop being lazy.  I'll get some pics up one of these days, I promise.

I do have one though.  Check out the blob of shit that came out of the (very corroded) caliper when blew the piston out.  I HAD to take a cell phone pic of that.  It's amazing the brake even worked.
« Last Edit: Dec 31, 2010, 04:25:43 by Ringo »
Chris

Offline t71ford

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Re: '75 CB550 "Autumn"
« Reply #11 on: Nov 29, 2010, 21:18:52 »
You're getting more done than I am... :P
Some people will tell you that slow is good - and it may be, on some days - but I am here to tell you that fast is better. Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles….Hunter S. Thompson

Offline Ringo

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Re: '75 CB550 "Autumn"
« Reply #12 on: Nov 29, 2010, 23:36:16 »
I'm single, Tyler.  I have all the time in the world.  ;D  But seriously, I only just got started.  Finally finished my "shop" (cave), and tallied up all that I plan to do to the bike.  Talk about sobering.  I wonder how much the 400 will fetch on ebay.  Might be just the cash boost I need to finish.
Chris

Offline IndieSol

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  • "This one goes to eleven." -Nigel Tufnel
    • Project: Pariah
Re: '75 CB550 "Autumn"
« Reply #13 on: Dec 01, 2010, 15:38:24 »
BMW R100
XT350
CJ360 Cafe Project

Project: Pariah

Offline t71ford

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Re: '75 CB550 "Autumn"
« Reply #14 on: Dec 02, 2010, 00:37:27 »
Ha!
You seriously going to sell the Bastard?
Some people will tell you that slow is good - and it may be, on some days - but I am here to tell you that fast is better. Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles….Hunter S. Thompson