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Thread: ATC70 Clark gastank Petcock options?

  1. #1
    Join Date
    Mar 2017
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    ATC70 Clark gastank Petcock options?

    broke off the cheap plastic petcock and hoping someone has found a better option? Thinking I might be able to thread a couple of brass npt fittings in there as well.


  2. #2
    MrConcdid is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Nov 2019
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    178
    I have read the reviews on those tanks, and that is a major failure point on them.
    It may be possible to heat the tank (empty and washed) just enough to soften the plastic and then thread a brass bung into place.
    then you would have a brass fitting to work with after the plastic has cooled.

    I have had very good luck with a heat gun on Honda plastic fenders and PVC pipe.
    MrC.

  3. #3
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    Someone needs to make them out of billet aluminum . I would be in for a half dozen .
    They all fail eventually , big problem .
    78 atc 90/180cc Dickson Full Suspension
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  4. #4
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    Quote Originally Posted by shortline10 View Post
    Someone needs to make them out of billet aluminum . I would be in for a half dozen .
    They all fail eventually , big problem .
    What do they look like?

    if you're serious, text me.... Seriously

    Sent from my Z958 using Tapatalk

  5. #5
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    Here you go Doug .


    Quote Originally Posted by ironchop View Post
    What do they look like?

    if you're serious, text me.... Seriously

    Sent from my Z958 using Tapatalk
    Attached Thumbnails Attached Thumbnails FBD98C0F-F111-489B-832C-D7F78CD3F5A6.jpg  
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  6. #6
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    Quote Originally Posted by shortline10 View Post
    Here you go Doug .
    That's it? No valve?

    Sent from my Z958 using Tapatalk

  7. #7
    Join Date
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    Yep that’s it , simple part .
    Bolts to the bottom of the tank and two fat o-rings seal it .
    Problem is , the plastic warps over time and the o-rings can’t seal tightly , or it just cracks near the nipples .
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  8. #8
    Join Date
    Mar 2017
    Location
    Chico CA
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    brand new tank and broke both nipples broke off while removing the fuel line.. Anyone try one of the aftermarket petcocks?

    https://clarkemfg.com/product-catego...arket-petcock/

    Last edited by Quinc; 02-13-2020 at 05:34 PM.

  9. #9
    Join Date
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    I don’t see how that style would even work when the original style has 2 holes into the fuel tank for on and reserve .

    https://clarkemfg.com/catalog/motorc...90-02-grooved/
    Attached Thumbnails Attached Thumbnails FC728B20-7EE0-421C-A7B4-72630D9E4FC0.jpg  
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  10. #10
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    Quote Originally Posted by Quinc View Post
    brand new tank and broke both nipples broke off while removing the fuel line.. Anyone try one of the aftermarket petcocks?

    https://clarkemfg.com/product-catego...arket-petcock/

    I used that petcock on a early 200X Clarke tank. It hasn't leaked in 5 years that I'm aware of.

    That tank only had one hole though, not like the 70 tank

    Your results may vary, of course. I block sanded the mating surface section of the X tank to make sure it would seal

    Sent from my Z958 using Tapatalk

  11. #11
    Join Date
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    I have some aluminum tubing coming from amazon and am going to make my own. I will post pics on how it turns out.

  12. #12
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    Quote Originally Posted by shortline10 View Post
    Yep that’s it , simple part .
    Bolts to the bottom of the tank and two fat o-rings seal it .
    Problem is , the plastic warps over time and the o-rings can’t seal tightly , or it just cracks near the nipples .
    I hate it when it cracks near the nipples!
    Feedback for yaegerb: Click Here

    Need something blasted or polished or both? Send me a PM

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