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Author Topic: 650 Trans/clutch in a 550, possible?  (Read 1353 times)

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Offline B.O.X.N.I.F.E.

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650 Trans/clutch in a 550, possible?
« on: July 13, 2009, 06:18:37 PM »
Got a cam chain on order, as well as some other bits, trying to get this thing reliable.

I'm going to replace the trans, I think I have some selector drum/fork damage. I also need to see how my clutch plates look.

For the sake of putting the newest possible parts in the bike, I'm thinking I may be able to drop in a 70-82 CB650 trans, and maybe clutch as well. Anyone done this, and are there any parts that will not interchange?
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1974 CB550

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and a couple years later, 38 days and 9,102 miles...

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Offline kslrr

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Re: 650 Trans/clutch in a 550, possible?
« Reply #1 on: July 13, 2009, 06:36:58 PM »
There's a guy who did a 550/650 hybrid engine.  it required a lot of work.  Do a search for that.  Also, I don't think the 650 trans was any stronger than the 550.
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Now  1972 CB350FX (experimental v2.0)
        1981 CB650c Custom with '79 engine (wifes)
        1981 CB650 engine
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        1977 Yamaha XS750D (in progress)
Then 1972 CL175
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Offline B.O.X.N.I.F.E.

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Re: 650 Trans/clutch in a 550, possible?
« Reply #2 on: July 13, 2009, 07:09:08 PM »
Quote from: kslrr on July 13, 2009, 06:36:58 PM
There's a guy who did a 550/650 hybrid engine.  it required a lot of work.  Do a search for that.  Also, I don't think the 650 trans was any stronger than the 550.

Not looking for added performance, just parts that are 8 years newer. Was it paulages that did that swap?? Paul, you out there? Should I try this?
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1974 CB550

32 days and 5,536 miles on a CB550...

http://kerncountykid.blogspot.com/

and a couple years later, 38 days and 9,102 miles...

Forever West

... and all of it in a 4 mintue video

<a href="Not a valid vimeo URL">WWYY?[/url]

Offline Hush

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Re: 650 Trans/clutch in a 550, possible?
« Reply #3 on: July 13, 2009, 07:43:17 PM »
I'd prefer the 400f for the gearbox, 6 speeds would be my dream.
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I think the thing I most like about motorcycling is the speed at which my brain must process information at to avoid the numb skulls who are eating pies, playing the ukulele, applying make-up etc in the comfort of their airconditioned armchairs as they make random attempts to kill me!!!!!!!

Offline B.O.X.N.I.F.E.

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Re: 650 Trans/clutch in a 550, possible?
« Reply #4 on: July 13, 2009, 07:46:59 PM »
Is this a 'wish' or advice? If 400 guts fit I'll be all over that. 6 gears would freakin rule.
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1974 CB550

32 days and 5,536 miles on a CB550...

http://kerncountykid.blogspot.com/

and a couple years later, 38 days and 9,102 miles...

Forever West

... and all of it in a 4 mintue video

<a href="Not a valid vimeo URL">WWYY?[/url]

Offline Hush

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Re: 650 Trans/clutch in a 550, possible?
« Reply #5 on: July 14, 2009, 12:17:21 AM »
I know it works for the 350f but don't think we can get that beloved 6th gear into our 500/550/650's unfortunately. :)
One of our Kiwi forum members has a 350f top with a 400f case, works good from all accounts.
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I think the thing I most like about motorcycling is the speed at which my brain must process information at to avoid the numb skulls who are eating pies, playing the ukulele, applying make-up etc in the comfort of their airconditioned armchairs as they make random attempts to kill me!!!!!!!

Offline bryanj

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Re: 650 Trans/clutch in a 550, possible?
« Reply #6 on: July 14, 2009, 09:21:25 AM »
Some 650 bits will fit but not the complete thing if my memory serves
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