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  1. #1

    Fx140 compression question

    Hey fellas what is the appropriate compression per cylinder of an 03 fx140. Online there mixed opinion can anyone chime in. This pwc has 185 hrs so where should it stand as far as compression ratio. Thanks in advance


  2. #2
    ok, i have tried searching and what pops up are mostly 2 stroke compression ratios....like 120psi or so is good.....i need to know about a 4 stroke yamaha....i'm pretty sure someone around here knows about it...come on.......

  3. #3
    smacota1's Avatar
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    I will have to check some old records but I think the compression on mine with 80 + hours was around 165#. I just checked a 2005 VX110 and saw 190#. The MR1 push a lot of compression.

  4. #4
    Thats what i'm talking about. I'm planning on buyint this fx140 in complete condition to swap it into my gpr hull an i was gonna check compression to see if it was worth the money....i need some input because i'm gonna check it out tomorrow. Help fellas.

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  6. #6
    smacota1's Avatar
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    Okay,

    Finally got a chance to look at some old notes:

    Nov 11, 2008 I checked the compression on a 2003 FX140 with 101 hours
    #1 165, #2 170 #3 165 #4 170

    I also checked my 2006 FX160HO with 8.9hrs
    #1 170, #2 170, #3 180 #4 170

    My 2006 GP1300r with 34.5 hrs

    #1 100, #2 100, #3 100

    Hope this helps you out.

  7. #7
    thenk you very much for the info.

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