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Thread: 1982 R65 Fuel tank question?

  1. #1
    Registered User 10drum's Avatar
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    1982 R65 Fuel tank question?

    I have owned a couple of /5's and many Brit bikes they all had dual fuel tank taps. I have owned a few Japanese bikes and they use a crossover pipe. This R65 has a single tap without a cross over. How does it draw fuel from the other side of the tank?

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    Rally Rat 1074's Avatar
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    It doesn't! There will be a small amount of fuel on the right side. So if you're the type who tends to run the tank dry, then you cal take the tank off and rotate it to get that last bit of fuel over to where the fuel tap is.
    Also, if you follow factory service then you'll meed to do that at the interval when BMW says to drain the tank. Water settles under gasoline and may rust out the bottom if you don't drain the tank as required.
    Boxerbruce

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    Registered User 10drum's Avatar
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    Quote Originally Posted by 1074 View Post
    It doesn't! There will be a small amount of fuel on the right side. So if you're the type who tends to run the tank dry, then you cal take the tank off and rotate it to get that last bit of fuel over to where the fuel tap is.
    Also, if you follow factory service then you'll meed to do that at the interval when BMW says to drain the tank. Water settles under gasoline and may rust out the bottom if you don't drain the tank as required.
    That's what I thought. Yes, on all of my old bikes, I drain the fuel out of the fuel tank, and the carburetor bowls every fall.

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    Registered User Rinty's Avatar
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    Some guys will just lay the bike over in a ditch, to transfer the last of the fuel.
    Rinty

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    Registered User tanker4me's Avatar
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    There are members that know more than I about specific things that can fit different Airheads, so with that said...
    Itís a different bike, but a Ď83 R80ST recently purchased had a tank with the same configuration.
    A fellow Airhead suggested that a 6.3 gallon R100 tank would fit the bike.
    Beside that itís larger, it has 2 petcocks.
    4541EC53-700D-423B-A0FA-0FCEB648E720.jpg
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    Rally Rat 1074's Avatar
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    Quote Originally Posted by tanker4me View Post
    There are members that know more than I about specific things that can fit different Airheads, so with that said...
    Itís a different bike, but a Ď83 R80ST recently purchased had a tank with the same configuration.
    A fellow Airhead suggested that a 6.3 gallon R100 tank would fit the bike.
    Beside that itís larger, it has 2 petcocks.
    4541EC53-700D-423B-A0FA-0FCEB648E720.jpg
    Keep in mind that the R80ST has all the electrics on the right side so the replacement tank will need to be a 1985 or newer.
    Boxerbruce

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    Registered User tanker4me's Avatar
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    The OP asked about a R65, there are alternatives to stock on everything.
    I used to strap a quart of gas to the front number plate on a Ď72 Pursang if going for a ride other than on a track.
    That was before the desert tank was fitted.
    I still had to lean it over or give it a shake to get back to camp from time to time.
    The possibilities are endless...

    D3981586-8D9F-4A06-BF13-03159EF36EC0.jpg
    Last edited by tanker4me; 05-06-2021 at 01:54 AM.
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