Valve float? Turbo 2v #18 - Ford Mustang Forums : Mustang Forum
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post #1 of 1 Old 05-29-2018, 12:17 PM Thread Starter
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Valve float? Turbo 2v #18

Lost compression in cylinder 8 pulled the motor apart and had a small dent on every piston from exhaust valve. Cylinder 8 dent from exhaust valve was much larger so the valve is bent. I did a compression test on the other 7 and they checked out all 150-160. Manley dished pistons with flycut for intake valve, stock ported heads with cms 3.5 cams and beehive valve springs. I would assume this is valve float. My current springs have 98 closed pressure and 193 opened. What springs do you recommend? I was looking into Manley nextek high load. Motor did run great for a year on 100 shot of nitrous. Just wanted to run this by you guys before I started throwing money at it. TIA picture is cylinder 8 and sorry for dyno graph rained on the way home. I would assume where it drops off is where they started to float

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