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Thread: New guy getting wrecked so far! .. 80 850g

  1. #1
    Join Date
    Apr 2021
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    Goodyear, AZ
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    6

    Default New guy getting wrecked so far! .. 80 850g

    I just made this account, while I say ďnewĒ guy I do have quite a few reading hours under my belt on this site. I just picked up an 80 gs850 for 300$ It needs incredible amounts of work which I fully understood when deciding to purchase it. It has sat since 2014. First I did a compression test to see if it was worth getting running as the motor sits or if I should plan on a rebuild. While the numbers are low ( according to harbor freight compression tester) they are consistent. (85-95 psi) BUT I soon learned that #3 cylinder spark plug hole is boogered up.. used a back tap on it and while you have to be extremely careful putting the plug in it threads and torques correctly.. Iím sure that will be a problem later as itís still not great. I thought I would try to get it running even with the low numbers... among other things I havenít shimmed valves before doing test (was just excited to hear it crank) getting ahead of myself I know. That was defeat #1. #2 came when I took off the stator cover (thinking it was dry) a whole bunch of oil mixed with gas came out of it. Later learning the stator runs in oil I drained it all properly.. no biggie. I actually didnít realize you donít have to pull that cover to get the starter out but whatever... good to know. Now letís move on to carbs... EVERY SINGLE Phillips screw was a PITA!! Once again getting ahead of myself, no heat, not letting sit in WD I used an ďimpact driverĒ (really just regular screw driver with a hammer) and broke them all free. Was un ganging the carbs and dropped one off the workbench breaking the carb body itself. The corner with the threads that hold the top diaphragm cap on broke off... ordered a used set of carbs on eBay for 80$ they are all repairable (Albeit very very nasty) EXCEPT the #4 carb that I need is not usable... hole in throttle body and cracked elsewhere on the carb. Wasnít in the description for them on eBay, I guess thatís what you get finding carbs that cheap had to be wrong. Anyway Iím not giving up, just not getting very far so far.... long post I know... wanted to thank everyone for the awesome information on here and if anybody needs carb parts for #1-3 let me know!! You guys rock.

  2. #2
    Join Date
    Apr 2021
    Location
    Goodyear, AZ
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    pic of dropped carburetor... hard pill to swallow right there...
    D49C6C28-CD7F-40C3-80B6-BC8EACBBF503.jpg

  3. #3
    Join Date
    Dec 2020
    Location
    Shingletown CA
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    Welcome to the site. Don't feel bad, we've all been there. I once bought a crashed ZX10R off the internet for a project.
    Supposedly had a "slightly bent but fixable frame " I counted at least 15 cracks in it when I finally got a look at it.

    Mad
    83 GS750E
    2006 ZX14
    2004 KTM 450 EXC
    2001 Yamaha Big Bear

  4. #4
    Join Date
    May 2017
    Location
    ohio
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    243

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    Would JB weld fix that? Well enough to use, and to stay fixed?
    Expecting the Spanish Inquisition
    1981 GS850G: the Ratzuki
    1981 GS1100E

  5. #5
    Join Date
    Apr 2021
    Location
    Goodyear, AZ
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    Iím gonna give that a shot. Hard to find carbs that arenít out of my budget. I mean as long as the diaphragm seals, 🤷🏻*@%^$♂️🤷🏻*@%^$♂️

  6. #6
    Join Date
    Apr 2021
    Location
    Wakefield nh
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    18

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    Thanks for posting- nice to know i am not the only one struggling with a gs. I bought 2 550ís a 79 and an 80. Both non-running. The 79 i had the carbs tanked and did a full tuneup and took care of a lot of deferred maintenance, the bike is a joy to ride. The 80 AKA the bad bike i have spent a ton of money on and itís still not right....on the plus side i am getting better at removing and installing carbs😀 if anyone knows a carb whisperer that i could hire...

  7. #7
    Join Date
    Apr 2021
    Location
    Goodyear, AZ
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    Thereís a guy on here I canít remember who but a search should find him... a lot of members send their carbs to him to rebuild, as far as tuning them idk how he could help without having the whole bike but I would read up on the adjustments on here and maybe go through and make sure everything is perfect. You could have something as simple as 2 orings on your air fuel screw or something like that... I did some jb welding and just installed the diagram today and it functions normally so I guess Iím gonna run with that.. I donít like it but if it works it works. Now on to the wiring and fuel tank so I can try to fire it. Once I know it will run Iíll start rebuilding the brakes and new tires and start getting it road ready.. still a long road ahead. The wiring looks like itís gonna be a nightmare as well the previous owner has crappy connectors and wire nuts everywhere. Honestly thinking about just starting over 🤷🏻*@%^$♂️

  8. #8
    Join Date
    Jul 2011
    Location
    Oklahoma
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    Quote Originally Posted by Sour751 View Post
    ...Now let’s move on to carbs... EVERY SINGLE Phillips screw was a PITA!!...
    That's because they're not Phillips, they're JIS (Japanese Industrial standard) This is true of every "Phillips" screw on Japanese bikes
    A proper JIS screwdriver will fit the screw heads much better (the difference is amazing) and save you a lot of grief.

    https://www.mcmaster.com/screwdriver...tyle~jis-jcis/

    Get the set of three, and maybe an extra #2. It'll be the best money you've ever spent on tools.
    Last edited by RichDesmond; 05-09-2021 at 12:42 PM.
    Rich Desmond
    1980 GS1000S
    2007 V-Strom 650
    2008 Ducati 848
    2002 DR-Z400S
    1999 SV650 (race bike)

  9. #9
    rphillips is offline Forum Sage Past Site Supporter
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    Why didn't someone bring this up back in the day, I don't think even our local shop knew. Just heard of it in the past few yrs. A phillips head screwdriver without an impact driver is just asking for trouble. JIS works great.
    1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

  10. #10
    Join Date
    Apr 2021
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    Goodyear, AZ
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    Iíve been meaning to order a set, I know itís not correct term but thatís just what comes out based on everything Iíve ever known! I need to order a set for sure! Thanks for the link.. Iíve managed to get em all out so far and replacing them with stainless Allen head bolts and going heavy on the anti seize! Shouldnít have any problems in the future!

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