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Thread: ALL ATC/US 90 JUNKIES! new big bore motor.. any interests?

  1. #1
    Join Date
    Jan 2010
    Location
    Portland, OR
    --
    9

    ALL ATC/US 90 JUNKIES! new big bore motor.. any interests?

    So recently i've started ressurecting some of my old collection and getting back into the mainstream.. Ive been on the phone with Pete Fisher (owner of Powroll) every morning for the past week and on the forum going back and forth with
    shortline10.. sounds like getting old stroker stuff together for the 90 motors is next to impossible without a big wallet or an inventory like shortlines or veal monkeys. when i mentioned to pete that there could be a market for a big motor he lit up like a christmas tree.. he wants to get a kit together (approx. 175cc) that is relatively inexpensive to do.. providing there are enough interested followers. he would provide the crank, possibly machine the oil pump drive, and cylinder may be by exchange. piston would also come along with a cam and springs. this would leave headwork, case machining, and other entrails up to us.carbs and pooooosssibly intakes would be availible through him seeing as BAPP and misc others are getting tricky to find. Whats the feedback? good idea? or am i just caught up in things...

  2. #2
    Join Date
    Jul 2009
    Location
    South Florida
    --
    6,803
    A stroker and BIG bore kit would be nice !!!!
    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

  3. #3
    Join Date
    Jan 2003
    Location
    Ripley Tn
    --
    1,363
    this is a very good idea
    85 Atc 70
    86 Atc 125m
    85 atc 350x
    86 atc 250r
    86 Atc 250r TT build
    85 Big Red bought brand NEW
    2012 Honda Goldwing Gl1800

  4. #4
    Join Date
    Oct 2007
    Location
    Minneapolis mn
    --
    4,067
    Makes me want to build a pissed off 90 now!
    No trikes. Too old, too crippled. Unless I find one I can't live without!
    "You cant fix stupid" ~ Ron White
    My feeback link: http://www.3wheelerworld.com/showthr...ack-for-Thorpe

  5. #5
    Join Date
    Jan 2010
    Location
    Portland, OR
    --
    9
    Thorpe- that's kinda what I'm goin for! I've got a few pretty pissed off 70s but the 90 stuff has a bit more prestige if you will.

    The big bore thing is certainly feasible and would be especially easy without a stroke not to mention less $$. So idk why both kits couldn't happen.

    I spoke with him again today and there was conversation of machining our own cylinder and sleeve as one out of a
    Chunk of billet. I may just give that a shot and see what happens. Could certainly go bigger than just a sleeved cylinder.

  6. #6
    Join Date
    Dec 2004
    Location
    Baltimore, MD
    --
    6,088
    I'm watching this thread intently.
    Nicholson 500x (Project)
    Nicholson 185s
    Nicholson 110 (That takes an atc70 tank)
    Ascott 500 head/350x (Project)
    Homebuilt Racer Chromoly Suspension 110 (Ragin Runt)
    PK Racing Suspension 70
    A+ Inc Suspension 70
    AWS Aluminum 90 frame
    Hi Performance ATC Suspension frame rd350
    Hi Performance ATC Suspension frame 90

  7. #7
    Join Date
    Nov 2003
    Location
    Oswego, IL
    --
    1,858
    this would be amazing! lets make it happen
    1974 atc 90 project underway cuzzztom

    1985 atc 110 for sale

    84 200s all original got off the first and only owner
    new carb
    maybe putting my 200x cam in it but not sure

    old trike
    1985 200x
    12.1 piston
    oil cooler kit
    white bors cam
    super trapp exhaust
    uni clamp on air filter
    350x front end

  8. #8
    Join Date
    Jan 2010
    Location
    Portland, OR
    --
    9
    ill give him a call this AM and try to pull the trigger on the project. ill have to put one of my old pauters together for him so he can have one to ride. this will really get him motivated lol

  9. #9
    Join Date
    Jan 2003
    Location
    Ripley Tn
    --
    1,363
    post some pics up this gotta be good
    85 Atc 70
    86 Atc 125m
    85 atc 350x
    86 atc 250r
    86 Atc 250r TT build
    85 Big Red bought brand NEW
    2012 Honda Goldwing Gl1800

  10. #10
    Join Date
    Sep 2010
    Location
    Texas
    --
    15
    Whatever happened here? I couldn't find anything else in the other threads about it. Maybe I just didn't try hard enough?

  11. #11
    Join Date
    Jul 2009
    Location
    South Florida
    --
    6,803
    Not enough interest would be my guess .


    Quote Originally Posted by Farmboy78 View Post
    Whatever happened here? I couldn't find anything else in the other threads about it. Maybe I just didn't try hard enough?
    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

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