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Thread: 90/110 oil cooler

  1. #1
    Join Date
    Nov 2015
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    Davenport iowa
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    90/110 oil cooler

    I was wondering what you 90/110 guys are running for a oil cooler and if you think it helps. I'm talking modified motors here 130 cc and up
    90 nickolson Bored and Stroked "The Good"

    Big Bore 110 Pauter frame "The Bad"

    90 Bored and Stroked “vey’s frame” "The Ugly"

    110 JSC frame Bored and Stroked
    flat track build. “Shop trike”

    1974 original 90 X 2

    1974 Original 70.

  2. #2
    Join Date
    Jan 2009
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    ohio
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ID:	255517 This is what I've been using on my flat track 70's. It does help cause you could feel the difference in the oil lines.
    If its on the internet its got to be true they can't put any lie's on the internet

  3. #3
    Join Date
    Feb 2013
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    Brazil, Indiana
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    Quote Originally Posted by DAM shop View Post
    I was wondering what you 90/110 guys are running for a oil cooler and if you think it helps. I'm talking modified motors here 130 cc and up
    Once you find a cooler I've posted the installation instructions here on the forum for 2 different brands of oil coolers. It shows where to drill, tap and plug the oil galleys on 90/110 and 185/200 engines.

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    1979 ATC110
    1983 ATC110
    1984 ATC110
    1984 ATC125M
    1985 ATC110 2 of them
    1985 ATC110 The wife's
    1987 ATC125M
    1985 ATC250ES
    1984 DX225 with 250 timberwolf engine and swingarm. Wolf in DX clothing

  4. #4
    Join Date
    May 2013
    Location
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    Two different schools of thought.
    First is probably the best but not the easiest. It's called an Oil Bypass System. On the 90/110 where you pick up the most heat as well as experience the highest chance of engine failure is oil going or not going through the oil passage up the cylinder into the head.
    The first example pulls the oil out of the oil pump and takes it directly to the head. Almost eliminating having to have an inline cooler.
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    Second example comes out of the side of the cylinder and goes directly to the head. Just another way to do it. Maybe a little easier than the first.
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    And finally and probably the most common because it is the easiest. This uses an aftermarket piece but you can use a modified stock cam cover.
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    * 1978 ATC 90/180 Pauter PJ1 / Springer "Team BAPP" Bike *

    * 1980 ATC 110/180 "Danny's Machine Works" 3D Sprint Dune Bike *

    * Nicholson 500 Race Bike *

    * HPATC Yamaha RD350 "Big Moe" Trike *

  5. #5
    Join Date
    Jan 2009
    Location
    ohio
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    Do the 110's have a restrictor in the block like the 70's to lower the oil flow to the head?
    If its on the internet its got to be true they can't put any lie's on the internet

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