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The numbers sound great for a cold motor. The only question that wouldd be in the back of my mind would be " did he put oil in the cylinders before he did the test". If that trick was done then it can really mask leaking rings. If he will stand behind the warranty simply get the motor home and do another compression test on it using your own Gage. The test is extremely easy to do with the motor out. Before you do the test you could check for oil residue by simply putting a white rag on the end of a dowel rod and put it down by the spark plug hole while turning it over. If there is any oil residue it will show up. If the compression test checks out I wouldd be overjoyed to have those compression numbers. FYI while it is out it wouldd be a good time to do a valve adjust and check out the head nuts/bolts. Good luck. PS how much did the motor cost?
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