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depends on the gauge, no two alike. the biggest thing you want to look for is inconsistencies(sp) from side to side. anywheres from 125-150 or so depending on the wear. anything under 120 is hard to start. but if youve got 5 lbs diff from side to side more than likley one ring pitted
 

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Mine tested at 148/150. As 76tntrv said, its the difference that is important. You want to be within 10% of each other. So if one is 150, and one is 135, you at at the edge. 10 different gauges will probably give you 10 sets of numbers. With an older gauge, I got 140/138 on the same engine.
 

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zone 5 said:
Mine tested at 148/150. As 76tntrv said, its the difference that is important. You want to be within 10% of each other. So if one is 150, and one is 135, you at at the edge. 10 different gauges will probably give you 10 sets of numbers. With an older gauge, I got 140/138 on the same engine.
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i agree zone 5, but ive pulled them down and rebuilt with less than 15 lbs difference. ive seen as low as 5 lbs difference be very evident upon disassembly
 
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