Author Topic: Swingarm bushings.  (Read 1139 times)

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Offline 70CB750

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Swingarm bushings.
« on: September 17, 2013, 02:02:04 PM »
This is what I have in the F arm, black plastic. I am already using early K bolt and pivot and i drilled holes and cut grease spirals in the pivot to help with lubrication.

The setup as you see it is absolutely tight in the frame. Should i just use it like this and fix it in the future or do it now?

Opinions?
Prokop
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Offline 70CB750

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Re: Swingarm bushings.
« Reply #1 on: September 17, 2013, 02:03:55 PM »
Prokop
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Offline bjbuchanan

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Re: Swingarm bushings.
« Reply #2 on: September 17, 2013, 02:32:05 PM »
Well most people swap them out because almost everybody has swingarm bushings that are shot. You said your stuff is nice and tight so technically speaking you are fine. I guess the real question is do YOU want to change them out preventatively?
The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

Don't trust me alone with a claw hammer and some pliers

Offline 70CB750

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Re: Swingarm bushings.
« Reply #3 on: September 17, 2013, 02:55:35 PM »
I guess the question is what to expect. If it's gonna go bad in 1000 miles or 10000 miles.

Prokop
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Offline bjbuchanan

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Re: Swingarm bushings.
« Reply #4 on: September 17, 2013, 07:18:37 PM »
Sure as hell not gonna last 10k, I get what you mean tho. The fact that you have it lubed up and the tube grooved will help but plastic is just not the solution for a bushing there. If it is all back together leave it until you have to do some work back there like replacing the tire or something, that is what I would do. If apart, get some 25$ bronze bushings in there
The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

Don't trust me alone with a claw hammer and some pliers

Offline Stev-o

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Re: Swingarm bushings.
« Reply #5 on: September 17, 2013, 07:21:45 PM »
Sure as hell not gonna last 10k, I get what you mean tho. The fact that you have it lubed up and the tube grooved will help but plastic is just not the solution for a bushing there. If it is all back together leave it until you have to do some work back there like replacing the tire or something, that is what I would do. If apart, get some 25$ bronze bushings in there

+1....I'd put the bronze bushings in there and rest easy knowing I used the best parts.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline andrewk

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Re: Swingarm bushings.
« Reply #6 on: September 17, 2013, 07:25:51 PM »
They'll probably last as long as a back tire if you've got it together already.

Mine were tight too, left 'em in, still doing well after 8k miles this year, will probably do the bushings this winter.

On the other hand, if you replace them now, you'll never have to worry about it again.

Offline bryanj

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Re: Swingarm bushings.
« Reply #7 on: September 17, 2013, 11:32:03 PM »
If yoou grease it ever 500 miles they will lST 10,000. my 500 from 71 still has originals and no play after greasing
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

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Offline 70CB750

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Re: Swingarm bushings.
« Reply #8 on: September 18, 2013, 03:16:41 AM »
I will look into bushings I guess and see.  This is a project on slow burner, I have all the time in the world to do these things while saving money for a head job :)
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
Sidecar


CB900C

2006 KLR650

Offline 70CB750

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Re: Swingarm bushings.
« Reply #9 on: September 18, 2013, 07:35:40 AM »
Well the big question now is what bushings, what dimensions and where from?  And yes i searched the forum, seems to be almost oil like question :)
Prokop
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I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline bjbuchanan

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Re: Swingarm bushings.
« Reply #10 on: September 18, 2013, 02:26:57 PM »
Pick your favorite vendor to buy from, could hit up Hondaman as well, he is selling them
The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

Don't trust me alone with a claw hammer and some pliers

Online seanbarney41

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Re: Swingarm bushings.
« Reply #11 on: September 18, 2013, 02:38:06 PM »
Well the big question now is what bushings, what dimensions and where from?  And yes i searched the forum, seems to be almost oil like question :)
that all depends on if/how much your collar is worn.  That's why Hondaman offers his swingarm rebuilding service...but 70cb750 I know you do some machine work.  If you have access to a lathe, you could probably research and set your own clearances...
If it works good, it looks good...

Offline 70CB750

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Re: Swingarm bushings.
« Reply #12 on: September 19, 2013, 05:43:07 AM »
I searched and researched and decided to buy from kenosha_kid on ebay.  That's the guy Frank in Germany, already got confirmation on shipping.

Making my own would be an option, but with the tooling I have now, precise hole within tolerances is quite the PITA.
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
Sidecar


CB900C

2006 KLR650