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    Worth checking squish?

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    • Irongamer727
      Irongamer727 last edited by

      Allright, I'm about to install a new cylinder kit. Should I pay any attention to the squish?
      It's the 170 kit

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      • Calum
        Calum last edited by

        Has it got measurements for what the squish should be.

        Irongamer727 1 Reply Last reply Reply Quote 0
        • J
          Jens Eskildsen last edited by

          Keep us updated with how you like it 😃

          Irongamer727 1 Reply Last reply Reply Quote 0
          • Irongamer727
            Irongamer727 @Calum last edited by

            @calum nope, no squish is mentioned. No squish "plates" are included either. So I guess you shouldn't need to check it. But I want to be sure.

            Calum 1 Reply Last reply Reply Quote 0
            • Irongamer727
              Irongamer727 @Jens Eskildsen last edited by

              @jens-eskildsen sure!

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              • Calum
                Calum @Irongamer727 last edited by

                @irongamer727 Yeah, but you got no measurements to go by...

                Irongamer727 1 Reply Last reply Reply Quote 0
                • Irongamer727
                  Irongamer727 @Calum last edited by

                  @calum thats true. But that does not confirm that the squish is correct. Whould be quite angry with myself if the piston smashed the head after the first start.

                  Calum 1 Reply Last reply Reply Quote 0
                  • Calum
                    Calum @Irongamer727 last edited by Calum

                    @irongamer727 Well, that's not measuring the squish, that's just assembling an engine correct.

                    Squish band tolerance is about the "squish" effect on the combustuable mix. Not whether or not the piston hits the head. As said, if that's the case, then you find find out upon installing.

                    A general rule of thumb when assembling engines is, it shouldn't be tight, you should be able to turn it over by hand. And indeed you should turn it over by hand before starting it up. Thus ensuring it's not tight and that the piston doesn't hit the head.

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                    • D
                      DTR+NSR last edited by

                      You normally check the squish by feeding a small length of solder down the spark plug hole, so the edge of the solder touches the edge of the bore. Then turning the engine over by hand then measuring the squashed end of the solder with a micrometer or similar. The squish on my dtr was 0.6mm when I bought it, which seems to be on the tight side.

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