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Thread: What is the weight of a complete 1983 GS1100e engine vs Bandit 1200 engine?

  1. #1
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    Default What is the weight of a complete 1983 GS1100e engine vs Bandit 1200 engine?

    Iíve searched through over 300 posts with various keywords, no luck in finding accurate information.
    Iím contemplating putting a Bandit 1200 engine into one of my 1983 GS1100e bikes, with modern Ohlins front and rear, Bandit swing arm modified for the twin shocks, modern 17Ē lightweight wheels with modern tires (180 rear), and modern big brakes. I know, everyone will say just get a modern bike or a Bandit and be done with it. I donít like the looks of modern bikes, and I like the ergonomics and handling of a 1983 just fine. I have two 1983 GS1100e bikes, just the normal bolt-ons on both. But, I think it would be a much more fun bike if I could lose about 100 pounds off one of them, and add some modern suspension,tires, brakes, and add about another 50 HP over what they make now. They both Dyno exactly the same, 109hp at the wheel. So, I need to get accurate weights of various 1983 components, but I have a hunch the biggest weight savings would be in swapping the engines?

    Thanks in advance, JN

  2. #2
    Join Date
    Mar 2016
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    Toronto Ontario
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    well the gs 1100 sposed to be 536 dry
    bandit 474

    no idea about the lumps
    1983 GS 550 LD
    2009 BMW K1300s

  3. #3
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    Jun 2017
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    Quote Originally Posted by maicojoe View Post
    I’ve searched through over 300 posts with various keywords, no luck in finding accurate information.
    I’m contemplating putting a Bandit 1200 engine into one of my 1983 GS1100e bikes, with modern Ohlins front and rear, Bandit swing arm modified for the twin shocks, modern 17” lightweight wheels with modern tires (180 rear), and modern big brakes. I know, everyone will say just get a modern bike or a Bandit and be done with it. I don’t like the looks of modern bikes, and I like the ergonomics and handling of a 1983 just fine. I have two 1983 GS1100e bikes, just the normal bolt-ons on both. But, I think it would be a much more fun bike if I could lose about 100 pounds off one of them, and add some modern suspension,tires, brakes, and add about another 50 HP over what they make now. They both Dyno exactly the same, 109hp at the wheel. So, I need to get accurate weights of various 1983 components, but I have a hunch the biggest weight savings would be in swapping the engines?

    Thanks in advance, JN
    Dunno about the weight of the engines respectively but I can say that modern wheels, forks, etc are a LOT lighter. My GS1000 weighs 435-440 +- 5 lbs wet and that's about a 120-125 lb weight savings over the listed wet weight of 562 pounds. (https://www.motorcyclespecs.co.za/mo...1000e%2078.htm) Like you I like the vibe/sound/feel of old school Suzukis but wanted modern wheels, tires, brakes, and handling.

    If I were you, I'd first look into upgrading your suspension/brakes/wheels to shave weight and then into motor swaps or mods.

  4. #4
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    Lexington, Ky USA
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    I have read that the GS1100 16 valve engines weigh 193 lbs. I have never weighed one but I have installed many and they are heavy .
    1980 Suzuki GS550E, 1981 Suzuki GS 1100EX all stock, 1983 Suzuki GS 1100EX modified, 1985 GS1150E, 1998 Honda Valkyrie Tourer, 1971 Kawasaki Mach lll 500 H1, 1973 Kawasaki Mach lV 750 H2.

  5. #5
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    It seems it would take a "lot" more than lighter forks & wheels to get 120# off of a GS1000, 120# is a lot, that's about 20% of the total bike's wgt. Also have R/R several GS1000 & 1100 engines, were heavy, but didn't really feel like nearly 200#, 35 yrs. ago, but probably would today. The wgt. wasn't the main problem, not having a good place to grab, lift, & hold on to the dang thing while shoving it back in there was a bigger problem for us. Seems odd that with all the folks around the GSR, nobody has put a GS1000 or 1100 eng. on a scale. Also answer to this orig. question would be pretty dang interesting.
    1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

  6. #6
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    Quote Originally Posted by rphillips View Post
    It seems it would take a "lot" more than lighter forks & wheels to get 120# off of a GS1000, 120# is a lot, that's about 20% of the total bike's wgt.
    The 435-440 +- 5 lbs wet comes from weighing the GS1000 wet with a full tank of gas, oil filled up etc ready to ride. I put the front wheel on the scale, then the rear wheel, and added the total.

    Weight savings list includes:

    Lighter 17" wheels/brake rotors/axles, swingarm, and triples/forks. Monoshock conversion removes half of the shock weight vs. a dual shock setup. Front fender is ABS plastic instead of metal.
    Passenger pegs/brackets removed
    Centerstand removed
    GSXR AGM battery vs. the stock boat anchor lead acid battery
    Stock 4 into 4 exhaust replaced with 10 lb. aftermarket 4-2-1 header and muffler
    520 chain/sprocket conversion. The stock 630 chain is heavy!!
    KOSO single gauge vs. stock gauge cluster
    Airbox removed and replaced with pods - I think the RS34 carbs maybe lighter than the stock carbs too

    It all adds up to some pretty significant weight savings.

  7. #7
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    Na man, I wasn't questioning your post. You said etc. I figured the exh., center stand, & chain, that's almost normal for anything other than a hard core orig GS's. Yours is appx. 100 lb. lighter than my Bandit 1200's & to me they feel light. Yours has got'ta be a hoot to ride. Congrats on the build, sounds great.
    1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

  8. #8
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    Quote Originally Posted by rphillips View Post
    Na man, I wasn't questioning your post. You said etc. I figured the exh., center stand, & chain, that's almost normal for anything other than a hard core orig GS's. Yours is appx. 100 lb. lighter than my Bandit 1200's & to me they feel light. Yours has got'ta be a hoot to ride. Congrats on the build, sounds great.
    No worries man. I was trying to give the OP some ideas on how to put one of these classics on a diet! It really wakes them up. My 1000 feels pretty modern for a 40 year old bike. LOL

  9. #9
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    My 1100e with Gen 1 Bandit front and rear, while I have never weighed it, is MUCH lighter than my stock GS just pushing it around.


    09 Kaw C14 Rocket powered Barcalounger
    1983 GS1100e
    82\83 1100e Frankenbike
    1980 GS1260
    Previous 65 Suzuki 80 Scrambler, 76 KZ900, 02 GSF1200S, 81 GS1100e, 80 GS850G

  10. #10
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    I've recently read the weight difference between the air and oil cooled lumps on a thread on OSS, but I couldn't find it as it wasn't the main topic.
    It was pretty significant.
    Regarding the wheels, I recently humped a fully dressed 1150 rear wheel into storage in the garage attic. It was shockingly heavy.

    When consulting the magic 8 ball for advice, one must first ask it "will your answers be accurate?"

    Glen
    -85 1150 es - Plus size supermodel.
    -Rusty old scooter.
    Other things I like to photograph.....instagram.com/gs_junkie
    https://www.flickr.com/photos/152267...7713345317771/

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