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Topics - Jasonserb

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Engine Mechanical / Electrical / In addition
« on: September 08, 2020, 07:41:46 PM »
I'm running a 455 olds bored 30 over
10:1 compression.
I did a compression test in it. The back 2 cylinders are weak compared to The other 6. The front 6 are running between 100 & 110 psi. The back left is @ 75 psi and the back right is @ 95 psi. At an idle I have 40 lbs of oil pressure.

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2
Engine Mechanical / Electrical / Knock in my motor
« on: September 08, 2020, 07:37:35 PM »
So my brother took my boat air born at about 10,000 rpm. Blew the PCV out of it and lost about a quart of oil. Now the motor has a slight knock to it. I've drained and replaced the oil. There was no metallic look to it. The oil filter also looked good. I've been told a couple different things it could be but have no clue where to start looking for the issue.
Thanks in advance
Jason

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