Compression Testing

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  • dwvoss
    #1

    Compression Testing

    Anyone come up with a setup to test compression short of a $100 Motion Pro kit?
    Tags: None
    • mark
      #2
      Here's one on Ebay. They have much cheaper ones there as well. Just a start.

      Pardon Our Interruption...
      http://cgi.ebay.com/ebaymotors/Motorcycle-Compression-Tester-5569_W0QQcmdZViewItemQQcategoryZ43989QQihZ004QQitemZ140172891378QQrdZ1QQsspagenameZWDVW


      This may be the same tester on another site with excellent service:

      http://www.mikesxs.net/mikesxs-tools...ategory_id=7.1

      Scroll down to find it.

        Comment

        • Steve
          GS Whisperer
          • Jun 2005
          • 35925
          • southwest oHIo
          #3
          Just remember when you do get around to actually measuring your compression, to do it with a warmed-up engine and hold the throttle wide open.


          .
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            Comment

            • Jethro
              Forum LongTimer
              Charter Member
              GSResource Superstar
              Past Site Supporter
              • May 2002
              • 17888
              • The only Henniker on earth
              #4
              I got mine for $29 at Pep Boys.
              Currently bikeless
              '81 GS 1100EX - "Peace, by superior fire power."
              '06 FZ1000 - "What we are dealing with here, is a COMPLETE lack of respect for the law."

              I ride, therefore I am.... constantly buying new tires.

              "Tell me what kind of an accident you are going to have, and I will tell you which helmet to wear." - Harry Hurt

                Comment

                • Griffin
                  Forum LongTimer
                  Past Site Supporter
                  • Sep 2003
                  • 14205
                  • Danville, IN
                  #5
                  Originally posted by mark
                  This may be the same tester on another site with excellent service:

                  http://www.mikesxs.net/mikesxs-tools...ategory_id=7.1

                  Scroll down to find it.
                  That site has a pretty good selection of metric, motorcycle-specific tools. I'm going to be placing an order with them. Thanks for the link.
                  GS450E GS650E GS700ES GS1000E GS1000G GS1100G GS1100E
                  KZ550A KZ700A GPZ750
                  CB400T CB900F
                  XJ750R

                    Comment

                    • Suzuki_Don
                      #6
                      Originally posted by Steve
                      Just remember when you do get around to actually measuring your compression, to do it with a warmed-up engine and hold the throttle wide open.


                      .
                      Turn the motor off first.

                        Comment

                        • Guest
                          #7
                          Originally posted by Suzuki_Don
                          Turn the motor off first.
                          [-X#-o...........

                            Comment

                            • MissFabulous
                              #8
                              Got mine for $15 from Harbor Freight


                              My only complaint is that the fitting lip is round and smooth and thin, which means if gets stuck at all (misthreaded, over tightened), you can't use a wrench to loosen it, in fact, really hard to find anything that will grab at it to get it out. Ask me how I know... Did eventually get it out after engine cooled off a bit so it wasn't a big deal.

                                Comment

                                • Smokinapankake
                                  #9
                                  I, too, got mine from Harbor Freight but it didn't have the right adapter to screw into the spark plug hole. Seems like a nice enough unit (for my purposes, anyway).

                                    Comment

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