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135 psi both sides for me. Cold motor. About 650 miles.
I pulled pipe and manifold to take a look. Both sides look fine.
 

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Discussion Starter #5
O.K., thanks, I have 130, both sides, 1000 mi.
I looked at cyl. walls, looks like mild scuffs, but sled still works great, pulls real hard. Go figure????
 

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Discussion Starter #7
To anyone around 150, are you using the adapter & screwing it fully in, just like a spark plug? If not, you may be getting a higher reading than you actually have.
 

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I used the long adaptor and the engine was cold. My compression hasn't changed since I first checked it at 18 miles.
 
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