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Old 02-02-2011, 07:52 PM   #1 (permalink)
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Current Sled(s): 02 zr 600 cc
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02 zr 600 cce. Just did a rebuild. get a compression of about 110. sound about right?
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Old 02-02-2011, 08:01 PM   #2 (permalink)
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Try a different gauge, 110 is pretty low, especially for being fresh!
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Old 02-02-2011, 08:38 PM   #3 (permalink)
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my 99 zr 600 after 4000 miles was at 124
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Old 02-02-2011, 08:45 PM   #4 (permalink)
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2000 ZR with 4800 miles was around ~120-125

Definitely sounds lowish for a rebuild.
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Old 02-02-2011, 08:54 PM   #5 (permalink)
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ill check it again in the morning. it was a used piston and cylinder that we got.
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Old 02-02-2011, 10:13 PM   #6 (permalink)
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ooo. should be 120ish. but try a different gauge first. what does the other side read? if they are both 110, perhaps you just have a gauge that reads low
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Old 02-02-2011, 10:25 PM   #7 (permalink)
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I`ve found that quite often cheaper gauges with long hose`s will read low...I have two of them, both read low..
(have a friend that lives right down the road, i`ve compared both my gauges to his snap on gauge..BIG difference!)

look for evenness..if their both about dead even, or atleast within a couple lbs, your probley good to go..

also, be sure to hold the throttle wide open when you test..
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Old 02-03-2011, 01:41 AM   #8 (permalink)
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I believe max compression was 135 from the factory. I generally look for the compression to be within 10% where as mentioned above a lot of gauges read low. I generally test with the key off (I know this sounds dumb but people forget sometimes), engine warm, throttle open, and 2-3 good pulls.
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Old 02-03-2011, 08:04 AM   #9 (permalink)
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i agee ...my 500 was about 135 so i would think the 600 would be around that..
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Old 02-03-2011, 04:49 PM   #10 (permalink)
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i was always told that even if the compression is low as long as there the same in each cylinder that it should b ok
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