Need advice on 1980 Suzuki GS450E

Discussion in 'Old's Cool' started by bigalsmith101, May 12, 2013.

  1. bigalsmith101

    bigalsmith101 Been here awhile

    Joined:
    Sep 21, 2009
    Oddometer:
    929
    Location:
    Lake Stevens, WA
    :ear :ear:ear Hey guys,

    I have the opportunity to purchase a relatively cheap bike here in Perth. It's a 1980 Suzuki GS450E. You can see it listed here: http://www.gumtree.com.au/s-ad/thornlie/motorcycles/suzuki-gs450e/1019026498

    It looks like this:

    [​IMG]

    [​IMG]

    The owner states that the right cylinder has 90psi compression and the left cylinder has 110psi compression.

    What should the normal compression be in the cylinders? How far gone is this bike if it's reading 110psi and 90psi in it's left and right cylinders respectively?

    I'm looking for advice on the engine compression test readings only, not the sale price, the fact that it's old as hell, etc. Cheap, running, registered bikes above 50cc are hard to come by here in West Australia. If I was at home in the states, I wouldn't worry if it needed a ring job, as I'd have the ability to do it there. However, I don't have the tools to work on bikes where I am now.

    Thanks,

    --Alex
    #1
  2. H96669

    H96669 A proud pragmatist.

    Joined:
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    4,750
    Location:
    Hiding off Hwy 6, B.C.
    Sorry not home to check the compression specs, my friend has a 450 in his shop and the shop manual. But 90/110 is pretty low and quite a differential between the cylinders.Too much of a differential.

    If the owner did the compression test himself, ask him if he did it with or without oil in the cylinders....or both if just to compare results and get a better idea of what the problem is. But neither would be an easy fix without a shop and tools.
    #2
  3. bigalsmith101

    bigalsmith101 Been here awhile

    Joined:
    Sep 21, 2009
    Oddometer:
    929
    Location:
    Lake Stevens, WA
    I did a bit more research and decided not to purchase it.

    Cheers.
    #3
  4. McJamie

    McJamie STROMINATOR

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    Oddometer:
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    You likely made the right choice. Unless it's free, and even then, maybe not.
    In North America, that model is actually considered a 425. Whether the 450 that came later is much different, I'm not sure. But compression might be one of the differences.
    #4