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1971 Suzuki TS90

This is a discussion on 1971 Suzuki TS90 within the General forums, part of the Caferacer.net Forums category; I'll look to see what I can find laying around; fwiw they leaked a tiny little bit when you changed the lever position, even when ...

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Thread: 1971 Suzuki TS90

  1. #21
    Senior Member TrialsRider's Avatar
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    I'll look to see what I can find laying around; fwiw they leaked a tiny little bit when you changed the lever position, even when they were still fairly new, not a lot, only enough to make your gloves smell like leaded gasoline.

  2. #22
    Senior Member knappyfeet's Avatar
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    I forgot all about Sudco....I'll call them later.

    There's one on ebay now..for the TS50 and a host of others...for $19 shipped from Indonesia. It looks like it would work...but if I could save the old bones from the original that would be nice.

    Mine didn't leak Trials due to all the rust setiment in the strainer bowl. The tank has some rust but not horrible. I may try to clean it only with evaporust.


    Attachment 95349

  3. #23
    Senior Member knappyfeet's Avatar
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    Wow.....this thread lost like 2 out of 3 pages.

    I've developed some pin noise I can tell and now it won't idle correctly without the choke on or partially on. But just running around on it with a tire that looses air quickly I can tell it is quicker than my HT-1....or I think it is.



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  5. #24
    Senior Member TrialsRider's Avatar
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    only way I could view your post was hit reply, go advanced and scroll down the page :/

    I found a carburetor, head, barrel & piston, and some ignition switches but it's probably all in way way worse condition then yours

    ... whoops, there it is, maybe I fixed it
    Last edited by TrialsRider; 10-12-2018 at 01:04 PM.

  6. #25
    Senior Member TrialsRider's Avatar
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    Yikes, that's a nasty sound, I'd be tempted to pull the head and see what's happening in there.

  7. #26
    Senior Member XB33BSA's Avatar
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    yes they were quick rotary valve makes for great power in a long spread and the expansion chamber as well
    the pipe on the suzi looks more like a tuned cone affair than the yamaha because it is
    all tech from gp racing that suzi got from that self exiled east german fellow i would first pull off the ex pipe and have a look see
    if the cyl bore is sweet and the ring at the ex port good then its probably maybe wrist pin knock or rotary valve noise ?

  8. #27
    Senior Member knappyfeet's Avatar
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    I haven't done anything to this for awhile......just riding motorcycles.

    But I'm cleaning out the garage and found these forks I purchased so I decided to install them and going to mount the tire that's been sitting here for awhile. The chrome on the slider is horrible but the hard chrome is much better and that is what really matters right now.

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  9. #28
    Senior Member knappyfeet's Avatar
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    With the new tires it rides nice and like I said before...seems to have more pickup than the ht-1. It also feels like a bigger motorcycle than the yamaha with its higher seat height, wider tank and more power. I rode it more today than ever before...just around my neighborhood. The fuel valve was rebuilt but with the rust in the tank it plugs the screen after awhile. I just put about a half of gallon of fuel just to get more running time on it. It will need to have the rust removed. It's a nice candidate for restoring but with all the chrome it would be costly. Maybe just not worth it.

    The pin noise.....or what I believe is the pin noise is still there although not that prevalent. I need to pull that and see what's up.....along with another go at the carburetor as its starving for fuel and occasionally I needed to engage the choke to keep it running.

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  10. #29
    Senior Member Farmer_John's Avatar
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    Sweet. My first "real" bike was a 73 TC100. I learned a whole lot and went a lot of places both good and bad on it.

  11. #30
    Senior Member knappyfeet's Avatar
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    Happy Halloween!

    I seized the engine yesterday riding up and down the street.....so I guess it's fitting today. Sporting the Dues Ex Machina hat.


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