Results 1 to 9 of 9
  1. #1
    Member
    Join Date
    Jan 2009
    Location
    Attalla
    Posts
    53

    Need help! 175 Johnson faststrike compression

    I'm looking at a 1998 175 faststrike. Compression is 93-95 on all six. Is this bad?
    Don't want to buy a bad motor. Thanks!

  2. SC Club Moderator ChampioNman's Avatar
    Join Date
    May 2004
    Location
    Crawfordville, FL/Lake Hartwell, SC
    Posts
    72,142
    #2

    Re: Need help! 175 Johnson faststrike compression (jrob)

    Should be just fine, a decarb with BRP tuner would not hurt.

  3. Member
    Join Date
    Jan 2009
    Location
    Attalla
    Posts
    53
    #3
    What's that?

  4. Sprint Boats Moderator Bassmeister's Avatar
    Join Date
    May 2004
    Location
    Calhoun, Ga.
    Posts
    47,078
    #4

    Re: (jrob)

    Decarb is cleaning the carbon outta the engine, especially around the rings, to keep 'em from sticking. Get a can of Engine Tuner from your local dealer and follow directions on the can. BUT, don't do it on the driveway, cuz it will turn black!!!

  5. Member
    Join Date
    Jan 2009
    Location
    Attalla
    Posts
    53
    #5
    So I should be ok on buying the motor?

  6. SC Club Moderator ChampioNman's Avatar
    Join Date
    May 2004
    Location
    Crawfordville, FL/Lake Hartwell, SC
    Posts
    72,142
    #6

    Re: (jrob)

    Yep I'd buy it as long and the comp checks out and you hear it run.

  7. Member DoferGofer's Avatar
    Join Date
    Jun 2004
    Location
    Edgewood Maryland
    Posts
    1,807
    #7

    Re: (ChampioNman)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by ChampioNman &raquo;</td></tr><tr><td class="quote"> Yep I'd buy it as long and the comp checks out and you hear it run. </td></tr></table>
    Very importantly, how does it run, there could be costly electrical problems that needs to be addressed. Can you give it a test drive?



    If you can't run with the big dogs, just stay on the porch.

    Model E150DPLIIB, Serial 05311818, Mfg Date 02/2011

    SST... 14 1/2" x 19" 45.0 mph.@4950
    Rebel 15 1/2" x 17" 45.1 mph.@5250
    Rebel 15 1/2" x 16" 44.6 mph.@5300 (Re-pitched/Balanced/Blue Printed by Mark's Props)
    Rebel 15 3/4" x 15" 44.2 mph.@5700-5750

  8. Member
    Join Date
    Jan 2009
    Location
    Attalla
    Posts
    53
    #8

    Re: Need help! 175 Johnson faststrike compression (jrob)

    Compression is 95 on
    All 6. Just sounded low to me but I don't
    Know anything about motors.

  9. Sprint Boats Moderator Bassmeister's Avatar
    Join Date
    May 2004
    Location
    Calhoun, Ga.
    Posts
    47,078
    #9

    Re: Need help! 175 Johnson faststrike compression (jrob)

    These aren't high compression engines and they run on regular fuel. If I was in the market for it and it ran good, I'd buy it and decarb it, then decarb it once a year or every 100 hours for long life.

Similar Threads

  1. 96 Johnson compression
    By Cclutter1 in forum Evinrude/Johnson Motors
    Replies: 4
    Last Post: 04-18-2011, 07:53 PM
  2. 1991 Johnson Faststrike compression
    By 91nitro in forum Evinrude/Johnson Motors
    Replies: 6
    Last Post: 07-14-2010, 04:43 AM
  3. 89 johnson 150 compression
    By randbart in forum Evinrude/Johnson Motors
    Replies: 1
    Last Post: 04-17-2010, 03:49 PM
  4. 70 lbs. compression on 150 GT Johnson - what the ??
    By Albert Rivera in forum Champion Boats
    Replies: 6
    Last Post: 05-24-2009, 03:05 AM
  5. 175 Faststrike compression
    By blue482 in forum Evinrude/Johnson Motors
    Replies: 4
    Last Post: 02-02-2008, 04:38 AM