Reviving a barn found engine
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  1. #1
    ekimyar's Avatar
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    OK, so I pulled my spare engine out of my garage, and it was much uglier than I remembered. Lots of oxidized aluminum, very dirty, and rust on every fastener. Wow, it sure looked better in my head!



    So, I started cleaning it up, dropped the radiator and drained the coolant (only a little was left in there), and got my first hint that this was going to be... different. I bought the engine around the same time as the bike, so I didn't know much of anything about our bikes at the time.



    I went to open the radiator drain plug, but there wasn't one. Just a smear of epoxy or something like that. Like I said, first clue. I continued to clean up, pulled the valve covers (one has a hairline crack that was patched with RTV sealant, second clue) and spark plugs. I then turned the engine over a few times-- first good news, not seized!



    Next up I was going to adjust the cam chain tension, but take a look at the picture-- what is missing there, instead only a smear of epoxy/goo? My cam chain tensioner bolt!





    So, OK, what do I do now? The engine on my bike had some sort of full fledged coolant/oil combination due to my stupidity. Should I resign myself to cracking both of these open and hope I have enough for a good bike? Or just adjust the valves on this thing, install and take a listen? Why would someone do this???



    Or look for another engine? There's a bike for sale with a hundred miles for $120, but I should not really be spending that right now. I'm at the too many projects stage right now, with twin 17 year old daughters cars being a 1078 Volvo and 1974 Bug, both of which have many needs. I just want to be able to ride!
    1979 CX500 Standard

  2. #2
    Super Moderator Blindstitch's Avatar
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    Odd. I say crack it open. For all we know someone put an automatic tensioner in there. Or they screwed everything up.
    1968 Honda CT90 Trail-Yellow Monster project
    1979 Honda CX500 Supertanker 72,000 miles.
    1983 Honda Gl650I Falcon-killer 78,000 miles.
    Pictures of my bikes Past and Present.



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  3. #3
    Senior Member bandit's Avatar
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    Quote Originally Posted by Blindstitch View Post
    Odd. I say crack it open. For all we know someone put an automatic tensioner in there. Or they screwed everything up.
    ditto,front and back covers off at the very least
    1981 GL500 , UK MODEL,needing a bit of tender loving care

    1982 GL500 , UK MODEL,my daily ride.



    Andalucia,in the south of spain

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  5. #4
    bear351c's Avatar
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    Agreed +1



    Triple bypass, if you can afford it. Mechanical seal/stator/timing chain. Should get another 75k miles after that.



    If not, do the chain/tensioner/guides and change oil and filter. Go for 100 miles, then do oil and filter again.
    It's not what you ride, just that you do.



    1978 CX500 Chopper in progress.

  6. #5
    Senior Member Shep's Avatar
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    All abandoned engines can suffer from this as well,







    More info here,



    http://www.pdsrecording.site90.com/c..._SunFlower.htm



    and



    http://www.pdsrecording.site90.com/cxgl500/Coolant.htm
    I won't miss the Human Race,well maybe,"Fish-and-Chips"

  7. #6
    marshallf3's Avatar
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    There's a bike for sale with a hundred miles for $120



    Shoot, if something like that was anywhere near me I'd jump right on it.



    I sure wish (and there may be) some sort of program that would silently search your local craigslist every few hours for certain keywords then notify you if anything appeared.
    1979 CX500 Custom - restored to almost original condition. I'm waiting to get strong enough to return to work so I can finish all the painting prep and priming, then I'll take the tank and sides out to Old Okie's shop where the bike is and shoot the color, clear, apply decals and final clear then polish it to a perfect gloss.



    I also have the tendency to misspell or add things later to a post so check again a bit later.

    *Click here to e-mail me

  8. #7
    Senior Member Shep's Avatar
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    Quote Originally Posted by marshallf3 View Post
    There's a bike for sale with a hundred miles for $120



    Shoot, if something like that was anywhere near me I'd jump right on it.


    Ditto.A $120 CX/GL in any state if complete-ish is worth $300+ at least in spares and savings



    I've hardly paid anything for parts for the past 3 years because of buying Ebay stuff nobody wanted like basket case engines and one lucky deal of a complete CX in bits with a 2nd engine(also crapped out but full of spares).



    I'll probably never need a gearbox/clutch or a starter motor/Radiator etc
    I won't miss the Human Race,well maybe,"Fish-and-Chips"

  9. #8
    Super Moderator ramprat06's Avatar
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    Is it just me, or is there no picture?



    I'd be surprised if you could have that many "goo" fixes and expect a runner without sharing some other usable parts from donors. Agree, open that up.
    May the myriad of wheels in your head, keep the two wheels between your legs rubber side down.

    Age 61
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  10. #9
    Senior Member philbrewer's Avatar
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    No two ways around it. Front and back covers off.

  11. #10
    Senior Member Toehead's Avatar
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    +1,





    And I am pretty interested to see what has been done inside that beast.
    1980 CX500C, All around road warrior

    1975 TS125 (Sold), old smoker

    1985 Camaro Berlinetta, V8 swap summer fun

    2002 WRX, Daily fun

    1977 naked GL1000, Highway cruiser

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