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Thread: 85 vs 89 250R Motor?

  1. #1
    Join Date
    Jun 2004
    Location
    Oregon
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    85 vs 89 250R Motor?

    Whats the differance between an 85 and 89 motor?? I got my hands on a 89 TRX Engine for free and its in fairly good shape..I was thinking about swaping the 89 with my 85, but i was just wondering the pros and cons...
    1986 ATC 250R
    Ported w/ Cool head
    LED pipe and silencer.
    Vforce3
    Keihin PWK 38mm
    Works Ultra Cross Shock
    LSR +2 Axle
    American Star Racing +4 Swinger
    LED Intake
    Hi-Flite desert seat
    OEM clutch 89 upgrade
    2021 YFZ450Rse Rossier R5 Titanium Header AIS Delete FCI Vortex ECU


  2. #2
    I think the 89 trx engine had a longer rod in it,so putting a 89 rod in a 85-86R is suppose to gain more power...
    84 Honda Big Red w/plow
    85 Honda 200X
    88 Honda CR 125
    86 350x(in process of building)
    :trikesown :Beerchug :trikesown

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