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Old 03-12-2013, 04:08 PM
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Default 1992 502 question

How many hours does everybody think before rebuild on 502 mags?? Motors were used very mild not in a performance boat
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Old 03-12-2013, 04:09 PM
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1000
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Old 03-12-2013, 04:23 PM
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Get a compression and leak down test done. That will give yousome useful info on what you may need done.
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Old 03-12-2013, 04:31 PM
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For reference, what are good compression numbers?
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Old 03-12-2013, 05:35 PM
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Cole,

I am no engine guru so hopefully some of them will respond. From what I understand as long as the numbers are not to low, the important part is having them about the same for all 8 cylinders. I think 150 is a good number for a new(er) engine. Mine were on the low side (115-120) on some of my cylinders on my engines that were supercharged. I had my engine rebuilt (top and bottem end).
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