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Author Topic: NOS Chain. Good idea?  (Read 546 times)

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Offline tomsweb1

  • '78 CB750A
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  • '78 CB750A
NOS Chain. Good idea?
« on: September 25, 2010, 07:39:45 AM »
I have got a line on a NOS o-ring chain for my 750A. It's been sitting at my local dealer since 78. Now, I was wondering if there is anything wrong with buying a 30+ year old o-ring chain.
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Present: 1978 CB750A, 1978 CB400A, 1983 Nighthawk 550, 1984 CM250C

Past: 1977 XL100, 1982 KZ1300

Offline wookie

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Re: NOS Chain. Good idea?
« Reply #1 on: September 25, 2010, 07:45:34 AM »
If it has been sitting in a sealed package, greased when it went it in it should be ok.  But why a 630 chain?  If you are restoring a bike to original specs then ok but i converted to a lighter 520 with no problems.
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Offline Skunk Stripe

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Re: NOS Chain. Good idea?
« Reply #2 on: September 25, 2010, 07:53:26 AM »
For a 750a you should be fine. Chains back then were not as strong hence why the 630 was used. The A has less power so that helps.
A smaller chain from today would still be better though. Better strength and lighter.
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Offline tomsweb1

  • '78 CB750A
  • Hot Shot
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  • Posts: 278
  • '78 CB750A
Re: NOS Chain. Good idea?
« Reply #3 on: September 25, 2010, 07:54:45 AM »
My sprockets are still in great shape, so this method is actually cheaper than buying a conversion. And it is nice to keep it original.
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Present: 1978 CB750A, 1978 CB400A, 1983 Nighthawk 550, 1984 CM250C

Past: 1977 XL100, 1982 KZ1300
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