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  1. #1
    PWCToday Newbie
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    125 compression on B1 701 with Protek head

    So I just picked up a clean B1 with the Protek package (head, pipe, plate and grate) and it's showing 125/125 on compression gauge. Checked the gauge against the gauge on my compressor and it's within 2-3 psi. Haven't put in the water yet, but that seems low for a 701 with aftermarket head. Fires right up and revs well out of the water.

    Thoughts?

  2. #2
    PWCToday.com Is My Home Away From Home SBrider's Avatar
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    Re: 125 compression on B1 701 with Protek head

    i think some of those protec heads were cut for a stroker so if its not stroked it would read low.

  3. #3
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    Re: 125 compression on B1 701 with Protek head

    I'm going to ride it this week, see how it runs. If I pull the head, do I need to CC the combustion chamber to see if it needs decking? Or is it time for rings?

  4. #4
    PWCToday.com Is My Home Away From Home SBrider's Avatar
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    Re: 125 compression on B1 701 with Protek head

    it might say the cc's right next to the spark plug threads, if it had bad rings i don't think the compression would be that close together

  5. #5
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    Re: 125 compression on B1 701 with Protek head

    Turned out it was the gauge, borrowed a gauge and read 163/165

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