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Thread: 73 R60/5 F'ed up cylinders

  1. #16
    Liaison 20774's Avatar
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    Well, my R25/2 might not be the "north star". I put only 300-500 miles a year on it. So 20 years might be 10000 miles? Hardly a challenge for the coating.

    My recollection was that with the '81-on models which come equipped with a Nikasil coating, the thought was that one would run 100K miles, rering, and go another 100K miles. Snowbum has a lot on Nikasil here:

    https://bmwmotorcycletech.info/cylinders.htm
    Kurt -- Forum Liaison ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  2. #17
    BMWMOA #24809 jhall's Avatar
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    Nikasil

    Quote Originally Posted by 20774 View Post
    Well, my R25/2 might not be the "north star". I put only 300-500 miles a year on it. So 20 years might be 10000 miles? Hardly a challenge for the coating.

    My recollection was that with the '81-on models which come equipped with a Nikasil coating, the thought was that one would run 100K miles, rering, and go another 100K miles. Snowbum has a lot on Nikasil here:

    https://bmwmotorcycletech.info/cylinders.htm
    Over the decades, I have heard nothing but good about the 81 and later nikasil cylinders. Can't say same a similar approach by Moto Guzzi, with their chrome/nickel lined cylinders, which tended to flake. Never heard of that with the nikasils, but I've been mostly out of the Airhead loop on for the last 15 years or so, so maybe problems have cropped up later?
    BMWMOA #24809

  3. #18
    Quote Originally Posted by 1074 View Post
    No machine shop that is professional would bore cylinders without having the new pistons on hand for the final hone!
    I agree 100%

  4. #19
    Registered User r60celo5's Avatar
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    can anyone recommend a reliable source of used parts? (other then Ebay)

    looking to find a set of R60/5 cylinders within spec.

    feel free to send me a message if you have a set for sale.

    thank you.

  5. #20
    Liaison 20774's Avatar
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    There's a used parts section in the link in my signature line.

    Names that come to my mind are Airhead Salvage, Repsycle, Bob's BMW, maybe Beemerboneyard. Years ago I bought something from Joshua Buck in California. And Stoner's Beemer Stash might be someone to check with.
    Kurt -- Forum Liaison ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  6. #21
    Registered User r60celo5's Avatar
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    Quote Originally Posted by 20774 View Post
    There's a used parts section in the link in my signature line.

    Names that come to my mind are Airhead Salvage, Repsycle, Bob's BMW, maybe Beemerboneyard. Years ago I bought something from Joshua Buck in California. And Stoner's Beemer Stash might be someone to check with.
    thanks

    and the search begins.

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